| Portsmouth Rhode Island
Weather Almanac |
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| Thursday, February 18, 2021 |
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| Mostly Cloudy early, Heavy Afternoon Snow and Dense Fog,
Light Winds and Cold |
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| Climate Normal
Period |
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Climate Record Period |
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| 1991- 2020 |
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1893 - 2021 |
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February
18, 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 Temperature |
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30 |
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47 |
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40 |
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-10 |
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56 |
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in |
1976 |
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15 |
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in |
1958 |
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| Minimum
Temperature |
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24 |
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30 |
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25 |
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-1 |
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40 |
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in |
2008 |
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-3 |
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in |
1979 |
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| Average
Temperature |
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27 |
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39 |
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33 |
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-6 |
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48 |
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in |
2008 |
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7 |
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in |
1958 |
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| Month Avg Max Temperature |
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36.1 |
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43.5 |
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38.6 |
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-2.6 |
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44.3 |
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in |
1990 |
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22.1 |
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in |
1979 |
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| Month Avg
Min Temperature |
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25.3 |
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30.7 |
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24.3 |
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+0.9 |
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30.7 |
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in |
2020 |
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7.4 |
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in |
1979 |
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| Month Average
Temperature |
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30.7 |
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37.1 |
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31.9 |
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-1.3 |
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37.1 |
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in |
2020 |
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14.8 |
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in |
1979 |
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| Precipitation |
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.23 |
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.11 |
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.13 |
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+.10 |
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2.94 |
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in |
1998 |
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| One Hour |
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.00 |
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.04 |
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1.02 |
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in |
1998 |
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| Hourly
Rate |
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.00 |
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.17 |
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1.34 |
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in |
2008 |
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| Month Precipitation |
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2.02 |
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2.75 |
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2.13 |
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-.11 |
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5.93 |
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in |
1988 |
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.07 |
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in |
1912 |
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| Year
Precipitation |
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3.98 |
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4.79 |
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5.80 |
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-1.82 |
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12.38 |
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in |
1979 |
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2.33 |
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in |
1980 |
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| Snow |
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4.2 |
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0.0 |
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0.4 |
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+3.8 |
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12.0 |
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in |
1893 |
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| Month
Snow |
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14.7 |
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0.0 |
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6.4 |
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+8.3 |
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26.4 |
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in |
2003 |
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0.0 |
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in |
2020 |
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| Season
Snow |
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26.4 |
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12.2 |
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23.5 |
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+2.9 |
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61.1 |
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in |
1996 |
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3.5 |
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in |
1989 |
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| Snow Depth |
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0 |
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0 |
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24 |
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in |
2015 |
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| HDD |
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38 |
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26 |
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32 |
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+6 |
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58 |
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in |
1958 |
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17 |
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in |
2008 |
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| Month HDD |
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614 |
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495 |
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595 |
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+19 |
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901 |
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in |
1979 |
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495 |
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in |
2020 |
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| Season
HDD |
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3275 |
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3260 |
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3514 |
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-239 |
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4477 |
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in |
1918 |
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2895 |
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in |
2016 |
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| CDD |
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0 |
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0 |
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0 |
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+0 |
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0 |
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in |
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0 |
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in |
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| Month CDD |
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0 |
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0 |
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0 |
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+0 |
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0 |
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in |
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0 |
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in |
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| Year CDD |
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0 |
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0 |
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0 |
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+0 |
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0 |
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in |
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0 |
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in |
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| Maximum Dew Point |
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28 |
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45 |
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31 |
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-3 |
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54 |
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in |
2008 |
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-1 |
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in |
1979 |
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| Minimum
Dew Point |
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4 |
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21 |
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14 |
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-10 |
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40 |
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in |
2008 |
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-21 |
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in |
1979 |
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| Average Dew Point |
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16 |
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33 |
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23 |
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-7 |
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47 |
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in |
2008 |
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-11 |
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in |
1979 |
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| Month Avg Max Dew Point |
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29.8 |
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36.7 |
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29.4 |
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+0.3 |
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38.7 |
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in |
2018 |
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2.7 |
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in |
1979 |
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| Month Avg
Min Dew Point |
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15.7 |
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22.6 |
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12.9 |
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+2.8 |
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22.6 |
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in |
2020 |
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-9.0 |
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in |
1979 |
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| Month Average Dew Point |
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22.8 |
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29.6 |
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23.0 |
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-0.3 |
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29.6 |
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in |
2020 |
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-3.1 |
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in |
1979 |
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February
18, 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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94% |
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96% |
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84% |
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+10% |
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100% |
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in |
2018 |
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45% |
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in |
1987 |
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| Minimum
Humidity |
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36% |
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62% |
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51% |
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-15% |
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95% |
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in |
1998 |
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23% |
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in |
2006 |
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| Average Humidity |
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65% |
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79% |
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67% |
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-2% |
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98% |
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in |
1998 |
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36% |
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in |
1987 |
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| Maximum Barometer |
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30.51 |
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30.46 |
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30.17 |
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+00.34 |
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30.89 |
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in |
1979 |
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29.45 |
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in |
1958 |
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| Minimum
Barometer |
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30.24 |
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29.93 |
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29.81 |
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+00.43 |
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30.57 |
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in |
1979 |
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29.14 |
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in |
1952 |
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| Average Barometer |
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30.38 |
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30.20 |
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29.99 |
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+00.38 |
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30.73 |
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in |
1979 |
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29.40 |
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in |
1958 |
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| Average Wind |
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6.5 |
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9.0 |
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8.5 |
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-2.0 |
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19.3 |
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in |
1952 |
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2.0 |
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in |
1995 |
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| Direction |
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NE |
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ENE |
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N |
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NNE |
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SSE |
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| High Wind Gust |
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20 |
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23 |
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27 |
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-7 |
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52 |
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in |
1900 |
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10 |
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in |
1995 |
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| Direction |
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NNE |
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SE |
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NW |
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N |
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SW |
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| High Heat Index |
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| Wind Chill |
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17 |
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23 |
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14 |
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+3 |
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-22 |
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in |
1958 |
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| Maximum Water Temp |
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37.4 |
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36.6 |
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37.9 |
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-0.5 |
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43.8 |
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in |
2012 |
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32.7 |
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in |
2015 |
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| Minimum
Water Temp |
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36.0 |
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35.2 |
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35.9 |
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+0.1 |
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41.9 |
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in |
2012 |
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31.3 |
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in |
2007 |
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| Average Water Temp |
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36.7 |
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35.9 |
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36.9 |
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-0.2 |
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42.9 |
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in |
2012 |
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32.4 |
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in |
2015 |
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| Sunrise/ AM Twilight |
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6:34:24 AM |
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6:06:18 AM |
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| Sunset /
PM Twilight |
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5:23:40 PM |
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5:51:46 PM |
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| Length Of Day |
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10:49:16 |
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| Special Conditions |
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Dense Fog |
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| Comments |
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| Hour-by-Hour Weather For February 18, 2021 |
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| Climate Weather for February 18 |
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| Weather History For February 18 |
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| Weather Calendar |
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