| Portsmouth Rhode Island
Weather Almanac |
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| Wednesday, April 21, 2021 |
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| Clear early, Partly Cloudy Day then Cloudy, Light Rain &
Rain PM, Windy & Cooler |
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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
21, 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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62 |
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49 |
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57 |
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+5 |
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84 |
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in |
1957 |
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40 |
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in |
1940 |
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| Minimum
Temperature |
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39 |
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32 |
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41 |
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-2 |
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53 |
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in |
2012 |
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24 |
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in |
1897 |
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| Average Temperature |
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51 |
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41 |
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49 |
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+2 |
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67 |
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in |
1957 |
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36 |
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in |
1908 |
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| Month Avg Max Temperature |
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56.1 |
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52.4 |
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53.7 |
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+2.4 |
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61.7 |
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in |
1976 |
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45.8 |
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in |
1907 |
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| Month Avg
Min Temperature |
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38.7 |
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37.7 |
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38.1 |
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+0.6 |
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42.9 |
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in |
2002 |
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31.6 |
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in |
1943 |
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| Month Average
Temperature |
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47.7 |
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45.3 |
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46.2 |
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+1.5 |
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51.9 |
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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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14 |
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24 |
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16 |
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-2 |
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29 |
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in |
1908 |
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0 |
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in |
1957 |
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| Month HDD |
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364 |
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414 |
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395 |
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-31 |
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540 |
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in |
1907 |
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275 |
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in |
1945 |
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| Season HDD |
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4684 |
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4639 |
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5045 |
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-361 |
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6124 |
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in |
1918 |
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4151 |
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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 |
1957 |
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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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13 |
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in |
1976 |
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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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13 |
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in |
1976 |
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0 |
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in |
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| Maximum Dew Point |
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54 |
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45 |
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45 |
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+9 |
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62 |
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in |
1987 |
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20 |
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in |
1981 |
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| Minimum
Dew Point |
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32 |
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27 |
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32 |
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+0 |
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50 |
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in |
2012 |
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5 |
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in |
1981 |
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| Average Dew Point |
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43 |
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36 |
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38 |
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+5 |
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55 |
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in |
2019 |
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13 |
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in |
1981 |
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| Month Avg Max Dew Point |
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43.1 |
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41.9 |
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41.4 |
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+1.7 |
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47.5 |
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in |
1987 |
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32.1 |
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in |
1965 |
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| Month Avg
Min Dew Point |
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30.4 |
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29.0 |
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28.1 |
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+2.3 |
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35.8 |
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in |
2010 |
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18.0 |
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in |
1982 |
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| Month Average Dew Point |
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36.8 |
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35.4 |
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34.7 |
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+2.1 |
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41.1 |
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in |
2010 |
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26.8 |
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in |
1975 |
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| Precipitation |
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.03 |
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.22 |
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.14 |
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-.11 |
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3.19 |
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in |
1991 |
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| One Hour |
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.03 |
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.08 |
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.39 |
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in |
2009 |
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| Hourly Rate |
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.19 |
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.25 |
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2.18 |
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in |
2009 |
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| Month Precipitation |
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2.68 |
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3.98 |
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3.01 |
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-.33 |
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9.19 |
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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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11.10 |
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14.74 |
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14.47 |
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-3.37 |
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28.46 |
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in |
1983 |
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6.71 |
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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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0.2 |
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in |
1947 |
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| Snow Depth |
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0 |
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0 |
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1 |
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in |
1904 |
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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
21, 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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95% |
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88% |
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88% |
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+7% |
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100% |
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in |
2017 |
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56% |
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in |
1981 |
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| Minimum
Humidity |
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71% |
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55% |
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45% |
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+26% |
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92% |
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in |
2009 |
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15% |
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in |
1980 |
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| Average Humidity |
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83% |
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72% |
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67% |
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+16% |
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95% |
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in |
2017 |
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39% |
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in |
1981 |
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| Maximum Barometer |
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29.94 |
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29.72 |
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30.09 |
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-00.15 |
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30.66 |
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in |
2013 |
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29.54 |
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in |
1971 |
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| Minimum
Barometer |
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29.49 |
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29.39 |
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29.83 |
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-00.34 |
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30.29 |
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in |
2008 |
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29.11 |
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in |
1991 |
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| Average Barometer |
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29.72 |
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29.56 |
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29.96 |
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-00.25 |
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30.43 |
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in |
2013 |
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29.38 |
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in |
1991 |
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| Average Wind |
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9.6 |
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10.5 |
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7.7 |
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+1.9 |
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14.3 |
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in |
1991 |
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3.1 |
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in |
1997 |
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| Wind Direction |
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SW |
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S |
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S |
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NE |
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SSW |
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| High Wind Gust |
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30 |
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32 |
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26 |
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+4 |
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42 |
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in |
1945 |
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15 |
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in |
1955 |
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| Gust Direction |
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S |
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WNW |
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SW |
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NW |
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SSE |
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| High Heat Index |
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| Wind Chill |
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31 |
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31 |
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35 |
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-4 |
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18 |
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in |
1981 |
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| Maximum Water Temp |
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50.4 |
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41.2 |
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48.4 |
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+2.0 |
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53.8 |
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in |
2012 |
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41.2 |
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in |
2020 |
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| Minimum
Water Temp |
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48.7 |
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40.3 |
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45.1 |
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+3.6 |
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50.8 |
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in |
2012 |
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40.3 |
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in |
2020 |
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| Average Water Temp |
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49.6 |
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40.8 |
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46.7 |
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+2.8 |
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52.3 |
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in |
2012 |
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40.8 |
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in |
2020 |
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| Sunrise/ AM Twilight |
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5:54:05 AM |
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5:24:49 AM |
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| Sunset /
PM Twilight |
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7:33:18 PM |
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8:02:34 PM |
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| Length Of Day |
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13:37:17 |
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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 21, 2021 |
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| Climate Weather for April 21 |
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| Weather History For April 21 |
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| Weather Calendar |
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| Back To Weather Stat Page |
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