| Portsmouth Rhode Island Weather Almanac |
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| Saturday,
September 4, 2021 |
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| Clear, Light Winds with Seasanal Temperatures |
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Climate
Normal Period |
Climate Record Period |
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1991 -
2020 |
1893 - 2021 |
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September 4, 2021 |
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Record |
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Record |
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| Observed Daily Data |
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2021 |
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2020 |
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Norm |
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Depart |
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Highest |
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Lowest |
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| Maximum Temperature |
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77 |
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87 |
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76 |
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+1 |
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89 |
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in |
1937 |
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63 |
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in |
1997 |
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| Minimum
Temperature |
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58 |
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66 |
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61 |
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-3 |
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73 |
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in |
1959 |
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49 |
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in |
1976 |
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| Average Temperature |
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68 |
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77 |
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68 |
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+0 |
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80 |
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in |
2018 |
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58 |
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in |
1997 |
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| Month Avg Max Temperature |
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74.3 |
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79.3 |
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76.3 |
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-2.0 |
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89.0 |
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in |
1929 |
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67.3 |
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in |
2003 |
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| Month Avg
Min Temperature |
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59.0 |
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64.8 |
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61.3 |
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-2.3 |
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72.5 |
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in |
1959 |
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51.5 |
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in |
1967 |
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| Month Average
Temperature |
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67.0 |
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72.3 |
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68.5 |
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-1.5 |
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79.3 |
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in |
1898 |
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60.8 |
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in |
2017 |
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| High
Heat Index |
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78 |
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91 |
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78 |
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-0 |
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99 |
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in |
1973 |
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| Low Wind Chill |
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#N/A |
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in |
#N/A |
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| HDD |
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0 |
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0 |
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1 |
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-1 |
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7 |
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in |
1997 |
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0 |
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in |
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| Month HDD |
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0 |
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0 |
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4 |
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-4 |
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18 |
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in |
2017 |
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0 |
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in |
2021 |
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| Season HDD |
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9 |
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0 |
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11 |
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-2 |
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42 |
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in |
1905 |
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0 |
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in |
2020 |
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| CDD |
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3 |
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12 |
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4 |
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-1 |
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15 |
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in |
2018 |
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0 |
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in |
1997 |
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| Month CDD |
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8 |
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29 |
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18 |
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-10 |
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57 |
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in |
1898 |
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0 |
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in |
1986 |
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| Year CDD |
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691 |
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795 |
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555 |
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+136 |
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795 |
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in |
2020 |
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272 |
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in |
1902 |
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| Maximum Dew Point |
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63 |
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71 |
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65 |
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-2 |
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75 |
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in |
1993 |
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48 |
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in |
1997 |
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| Minimum
Dew Point |
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54 |
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54 |
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56 |
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-2 |
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68 |
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in |
1961 |
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40 |
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in |
1989 |
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| Average Dew Point |
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59 |
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63 |
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61 |
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-2 |
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71 |
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in |
2018 |
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45 |
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in |
1989 |
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| Month Avg Max Dew Point |
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63.3 |
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70.3 |
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65.5 |
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-2.3 |
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74.3 |
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in |
1959 |
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54.3 |
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in |
1975 |
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| Month Avg
Min Dew Point |
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54.5 |
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58.5 |
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56.8 |
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-2.3 |
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70.5 |
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in |
1959 |
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41.8 |
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in |
1967 |
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| Month Average Dew Point |
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59.3 |
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64.5 |
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56.8 |
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+2.5 |
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72.4 |
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in |
1959 |
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48.6 |
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in |
1967 |
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| Precipitation |
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.00 |
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.08 |
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.11 |
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-.11 |
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2.02 |
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in |
1905 |
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| One Hour |
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.00 |
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.08 |
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.55 |
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in |
1970 |
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| Hourly Rate |
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.00 |
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.36 |
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3.25 |
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in |
2012 |
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| Month Precipitation |
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6.45 |
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.39 |
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.44 |
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+6.01 |
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6.45 |
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in |
2021 |
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.00 |
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in |
2019 |
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| Year Precipitation |
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35.55 |
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24.42 |
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29.72 |
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+5.83 |
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45.30 |
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in |
1998 |
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16.55 |
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in |
1957 |
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| Snow |
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#N/A |
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#N/A |
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#N/A |
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#N/A |
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#N/A |
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in |
#N/A |
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| Snow Depth |
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#N/A |
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#N/A |
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#N/A |
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in |
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| Month Snow |
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#N/A |
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#N/A |
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#N/A |
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#N/A |
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#N/A |
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in |
#N/A |
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#N/A |
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in |
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| Season Snow |
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#N/A |
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#N/A |
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#N/A |
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#N/A |
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#N/A |
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in |
#N/A |
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#N/A |
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in |
#N/A |
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September
4, 2021 |
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|
Record |
Record |
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| Observed Daily Data |
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2021 |
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2020 |
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Norm |
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Depart |
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Highest |
Lowest |
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| Maximum Humidity |
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91% |
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96% |
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93% |
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-2% |
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100% |
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in |
2003 |
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72% |
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in |
1983 |
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| Minimum
Humidity |
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52% |
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45% |
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58% |
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-6% |
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93% |
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in |
2003 |
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34% |
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in |
2007 |
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| Average Humidity |
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72% |
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71% |
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75% |
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-4% |
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97% |
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in |
2003 |
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59% |
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in |
1983 |
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| Maximum Barometer |
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30.00 |
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30.00 |
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30.09 |
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-00.09 |
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30.63 |
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in |
1989 |
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29.70 |
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in |
1957 |
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| Minimum
Barometer |
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29.91 |
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29.73 |
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29.88 |
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+00.03 |
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30.24 |
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in |
1965 |
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29.30 |
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in |
2010 |
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| Average Barometer |
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29.96 |
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29.87 |
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29.99 |
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-00.03 |
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30.42 |
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in |
1989 |
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29.53 |
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in |
2010 |
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| Average Wind |
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4.4 |
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4.9 |
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5.8 |
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-1.4 |
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12.1 |
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in |
1972 |
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1.3 |
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in |
1969 |
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| Direction |
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NW |
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NW |
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S |
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WNW |
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ESE |
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| High Wind Gust |
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15 |
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17 |
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21 |
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-6 |
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37 |
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in |
1988 |
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11 |
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in |
1969 |
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| Direction |
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NW |
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SW |
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SSW |
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SSE |
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S |
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| Maximum Water Temp |
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72.3 |
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71.1 |
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70.5 |
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+1.8 |
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73.7 |
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in |
2018 |
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65.7 |
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in |
2017 |
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| Minimum
Water Temp |
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69.4 |
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68.4 |
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68.0 |
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+1.4 |
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71.4 |
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in |
2018 |
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63.4 |
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in |
2017 |
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| Average Water Temp |
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70.9 |
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69.8 |
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69.3 |
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+1.6 |
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72.6 |
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in |
2018 |
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64.6 |
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in |
2017 |
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| Sunrise/ AM Twilight |
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6:13:33 AM |
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5:46:44 AM |
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| Sunset /
PM Twilight |
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7:14:43 PM |
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7:41:32 PM |
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| Length Of Day |
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13:01:10 |
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| Special Conditions |
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None |
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| Comments |
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| Hour-by-Hour Weather For September 4, 2021 |
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| Climate Weather for September 4 |
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| Weather History For September 4 |
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| Weather Calendar |
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| Back
To Weather Stat Page |
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