| Portsmouth Rhode Island
Weather Almanac |
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| Sunday, April 18, 2021 |
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| Cloudy early, Partly Cloudy Day to Mostly Cloudy PM and
Warmer |
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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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April
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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58 |
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40 |
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56 |
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+2 |
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80 |
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in |
1976 |
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39 |
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in |
1921 |
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| Minimum
Temperature |
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40 |
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35 |
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40 |
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+0 |
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53 |
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in |
2002 |
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29 |
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in |
2003 |
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| Average Temperature |
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49 |
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38 |
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48 |
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+1 |
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67 |
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in |
1976 |
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36 |
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in |
1921 |
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| Month Avg Max Temperature |
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54.8 |
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52.3 |
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53.2 |
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+1.7 |
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61.9 |
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in |
1945 |
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45.7 |
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in |
2007 |
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| Month Avg
Min Temperature |
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38.2 |
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38.3 |
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37.7 |
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+0.5 |
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42.7 |
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in |
2010 |
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30.9 |
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in |
1943 |
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| Month Average
Temperature |
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46.8 |
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45.6 |
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45.7 |
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+1.1 |
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52.4 |
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in |
1945 |
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39.3 |
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in |
1907 |
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| HDD |
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16 |
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27 |
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17 |
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-1 |
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29 |
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in |
1921 |
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0 |
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in |
1976 |
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| Month HDD |
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328 |
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350 |
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347 |
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-19 |
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463 |
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in |
1907 |
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227 |
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in |
1945 |
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| Season HDD |
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4648 |
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4575 |
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4997 |
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-349 |
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6059 |
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in |
1918 |
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4121 |
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in |
2012 |
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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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2 |
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in |
1976 |
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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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6 |
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in |
2002 |
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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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6 |
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in |
2002 |
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0 |
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in |
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| Maximum Dew Point |
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44 |
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37 |
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44 |
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+0 |
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59 |
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in |
2002 |
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23 |
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in |
1990 |
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| Minimum
Dew Point |
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36 |
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33 |
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31 |
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+5 |
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50 |
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in |
2002 |
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11 |
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in |
1985 |
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| Average Dew Point |
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40 |
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35 |
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37 |
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+3 |
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55 |
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in |
2002 |
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20 |
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in |
1990 |
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| Month Avg Max Dew Point |
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42.0 |
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41.6 |
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40.9 |
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+1.1 |
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46.6 |
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in |
2010 |
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31.1 |
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in |
1975 |
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| Month Avg
Min Dew Point |
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29.4 |
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29.2 |
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27.6 |
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+1.9 |
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35.7 |
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in |
2010 |
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16.6 |
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in |
1992 |
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| Month Average Dew Point |
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35.7 |
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35.4 |
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34.2 |
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+1.5 |
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41.1 |
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in |
2010 |
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24.3 |
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in |
1992 |
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| Precipitation |
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.00 |
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.77 |
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.14 |
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-.14 |
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2.05 |
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in |
1967 |
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| One Hour |
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.00 |
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.17 |
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.33 |
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in |
1967 |
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| Hourly Rate |
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.00 |
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.38 |
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.38 |
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in |
2020 |
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| Month Precipitation |
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2.65 |
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3.76 |
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2.59 |
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+.06 |
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6.74 |
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in |
1983 |
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.08 |
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in |
1966 |
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| Year Precipitation |
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11.07 |
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14.52 |
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14.05 |
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-2.98 |
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26.01 |
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in |
1983 |
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6.69 |
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in |
2012 |
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| Snow |
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0.0 |
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0.0 |
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0.0 |
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+0.0 |
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T |
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in |
2001 |
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| Snow Depth |
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0 |
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0 |
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T |
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in |
2005 |
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| Month Snow |
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T |
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T |
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0.5 |
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-0.5 |
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9.6 |
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in |
1996 |
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0.0 |
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in |
2019 |
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| Season Snow |
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27.7 |
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12.9 |
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33.5 |
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-5.8 |
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84.1 |
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in |
1996 |
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5.0 |
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in |
1998 |
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April
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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90% |
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95% |
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86% |
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+4% |
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100% |
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in |
2001 |
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58% |
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in |
2008 |
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| Minimum
Humidity |
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49% |
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88% |
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45% |
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+4% |
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97% |
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in |
1987 |
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14% |
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in |
2005 |
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| Average Humidity |
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70% |
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92% |
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66% |
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+4% |
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99% |
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in |
1987 |
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39% |
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in |
1950 |
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| Maximum Barometer |
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29.82 |
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30.02 |
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30.06 |
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-00.24 |
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30.60 |
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in |
2014 |
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29.49 |
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in |
1997 |
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| Minimum
Barometer |
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29.75 |
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29.68 |
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29.80 |
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-00.05 |
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30.50 |
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in |
2003 |
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28.99 |
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in |
1997 |
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| Average Barometer |
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29.79 |
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29.85 |
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29.93 |
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-00.15 |
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30.54 |
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in |
2003 |
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29.24 |
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in |
1997 |
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| Average Wind |
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5.2 |
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10.7 |
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7.5 |
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-2.3 |
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20.2 |
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in |
1986 |
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3.5 |
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in |
1978 |
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| Wind Direction |
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NW |
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NNE |
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WNW |
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NNE |
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SSE |
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| High Wind Gust |
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24 |
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25 |
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25 |
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-1 |
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47 |
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in |
1986 |
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13 |
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in |
1953 |
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| Gust Direction |
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SSW |
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N |
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NW |
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NNE |
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SE |
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| High Heat Index |
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| Wind Chill |
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39 |
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27 |
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34 |
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+5 |
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19 |
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in |
1971 |
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| Maximum Water Temp |
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46.5 |
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42.3 |
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47.3 |
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-0.8 |
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55.4 |
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in |
2012 |
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42.3 |
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in |
2020 |
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| Minimum
Water Temp |
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45.7 |
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39.9 |
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44.4 |
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+1.3 |
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49.8 |
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in |
2012 |
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39.9 |
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in |
2020 |
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| Average Water Temp |
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46.1 |
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41.1 |
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45.9 |
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+0.2 |
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52.6 |
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in |
2012 |
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41.1 |
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in |
2020 |
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| Sunrise/ AM Twilight |
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5:58:33 AM |
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5:29:32 AM |
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| Sunset /
PM Twilight |
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7:30:03 PM |
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7:59:04 PM |
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| Length Of Day |
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13:29:32 |
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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 April 18, 2021 |
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| Climate Weather for April 18 |
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| Weather History For April 18 |
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| Weather Calendar |
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