| Portsmouth Rhode Island
Weather Almanac |
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| Thursday, March 18, 2021 |
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| Cloudy, Heavy Rain and Fog PM, 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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March
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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48 |
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53 |
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46 |
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+2 |
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68 |
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in |
2011 |
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20 |
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in |
1967 |
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| Minimum
Temperature |
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34 |
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36 |
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31 |
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+3 |
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44 |
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in |
1936 |
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7 |
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in |
1916 |
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| Average Temperature |
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41 |
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45 |
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39 |
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+2 |
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55 |
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in |
2011 |
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15 |
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in |
1967 |
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| Month Avg Max Temperature |
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44.4 |
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51.3 |
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43.6 |
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+0.8 |
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51.8 |
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in |
1973 |
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31.8 |
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in |
1916 |
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| Month Avg
Min Temperature |
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26.8 |
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35.0 |
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28.9 |
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-2.2 |
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37.4 |
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in |
1973 |
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19.6 |
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in |
1916 |
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| Month Average Temperature |
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35.9 |
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43.4 |
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36.6 |
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-0.7 |
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44.9 |
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in |
1973 |
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25.9 |
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in |
1916 |
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| HDD |
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24 |
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20 |
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26 |
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-2 |
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50 |
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in |
1967 |
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10 |
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in |
2011 |
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| Month HDD |
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524 |
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389 |
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512 |
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+12 |
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703 |
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in |
1916 |
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362 |
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in |
1973 |
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| Season HDD |
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4091 |
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3950 |
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4338 |
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-247 |
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5389 |
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in |
1905 |
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3564 |
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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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43 |
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38 |
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35 |
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+8 |
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52 |
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in |
1990 |
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-6 |
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in |
1967 |
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| Minimum
Dew Point |
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31 |
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22 |
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21 |
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+10 |
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38 |
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in |
2012 |
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-14 |
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in |
1967 |
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| Average Dew Point |
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37 |
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30 |
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28 |
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+9 |
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43 |
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in |
1989 |
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-10 |
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in |
1967 |
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| Month Avg Max Dew Point |
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27.5 |
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38.2 |
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33.3 |
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-5.8 |
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41.6 |
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in |
1973 |
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20.9 |
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in |
1960 |
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| Month Avg
Min Dew Point |
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10.8 |
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22.2 |
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18.3 |
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-7.6 |
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29.7 |
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in |
1973 |
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4.2 |
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in |
1980 |
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| Month Average Dew Point |
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19.1 |
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30.2 |
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26.2 |
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-7.0 |
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35.6 |
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in |
1973 |
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15.1 |
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in |
1950 |
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| Precipitation |
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1.38 |
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.00 |
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.15 |
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+1.23 |
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4.26 |
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in |
1968 |
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| One Hour |
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.30 |
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.00 |
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.67 |
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in |
1968 |
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| Hourly Rate |
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.73 |
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.00 |
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.73 |
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in |
2021 |
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| Month Precipitation |
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1.83 |
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1.08 |
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2.45 |
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-.62 |
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8.03 |
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in |
1968 |
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.08 |
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in |
1915 |
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| Year Precipitation |
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7.33 |
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6.89 |
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9.55 |
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-2.22 |
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19.20 |
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in |
1979 |
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5.30 |
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in |
1901 |
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| Snow |
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0.0 |
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0.0 |
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0.2 |
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-0.2 |
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4.5 |
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in |
1949 |
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| Snow Depth |
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0 |
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0 |
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9 |
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in |
1896 |
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| Month Snow |
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0.0 |
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0.7 |
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3.8 |
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-3.8 |
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20.3 |
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in |
1916 |
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0.0 |
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in |
2021 |
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| Season Snow |
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27.7 |
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12.9 |
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31.1 |
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-3.4 |
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75.0 |
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in |
2005 |
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4.7 |
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in |
1998 |
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March
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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98% |
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79% |
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82% |
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+16% |
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100% |
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in |
2012 |
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45% |
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in |
2015 |
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| Minimum
Humidity |
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77% |
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31% |
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45% |
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+32% |
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90% |
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in |
1968 |
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20% |
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in |
1992 |
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| Average Humidity |
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88% |
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55% |
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63% |
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+24% |
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95% |
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in |
1968 |
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33% |
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in |
1992 |
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| Maximum Barometer |
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30.11 |
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30.48 |
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30.12 |
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-00.01 |
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30.66 |
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in |
2000 |
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29.19 |
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in |
1973 |
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| Minimum
Barometer |
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29.78 |
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30.21 |
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29.80 |
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-00.02 |
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30.33 |
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in |
2000 |
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28.91 |
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in |
1973 |
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| Average Barometer |
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29.95 |
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30.35 |
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29.96 |
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-00.01 |
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30.50 |
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in |
2000 |
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29.05 |
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in |
1973 |
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| Average Wind |
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5.6 |
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6.5 |
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8.8 |
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-3.2 |
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19.2 |
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in |
1973 |
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1.5 |
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in |
1996 |
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| Direction |
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W |
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S |
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WNW |
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W |
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SSE |
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| High Wind Gust |
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31 |
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19 |
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27 |
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+4 |
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48 |
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in |
1928 |
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11 |
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in |
2004 |
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| Direction |
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N |
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S |
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NW |
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NE |
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SE |
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| High Heat Index |
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| Wind Chill |
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32 |
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34 |
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19 |
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+13 |
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-10 |
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in |
1967 |
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| Maximum Water Temp |
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38.5 |
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40.6 |
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40.3 |
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-1.8 |
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47.1 |
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in |
2012 |
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35.4 |
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in |
2015 |
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| Minimum
Water Temp |
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37.6 |
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37.9 |
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38.3 |
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-0.7 |
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44.9 |
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in |
2012 |
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33.9 |
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in |
2015 |
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| Average Water Temp |
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38.1 |
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39.3 |
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39.3 |
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-1.3 |
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46.0 |
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in |
2012 |
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34.7 |
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in |
2015 |
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| Sunrise/ AM Twilight |
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6:49:52 AM |
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6:22:20 AM |
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| Sunset /
PM Twilight |
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6:56:05 PM |
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7:23:36 PM |
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| Length Of Day |
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12:06:13 |
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| Special Conditions |
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Fog |
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| Comments |
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Frist rain since March 1st |
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| Hour-by-Hour Weather For March 18, 2021 |
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| Climate Weather for March 18 |
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| Weather History For March 18 |
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| Weather Calendar |
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| Back To Weather Stat Page |
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