| Portsmouth Rhode Island Weather Almanac |
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| Tuesday,
September 17, 2024 |
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| Mostly Cloudy
early, Partly Cloudy Day w/Haze to Mostly Cloudy, Dense Fog PM, Very Light
Winds, Warmer |
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Climate
Normal Period |
Climate Record Period |
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1991 -
2020 |
1893 - 2024 |
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September 17, 2024 |
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Record |
|
Record |
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| Observed Daily Data |
|
2024 |
|
2023 |
|
Norm |
|
Depart |
|
Highest |
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Lowest |
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| Maximum Temperature |
|
78 |
|
75 |
|
72 |
|
+6 |
|
86 |
|
in |
1991 |
|
57 |
|
in |
1954 |
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| Minimum
Temperature |
|
58 |
|
55 |
|
57 |
|
+1 |
|
69 |
|
in |
1991 |
|
43 |
|
in |
1948 |
|
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| Average Temperature |
|
68 |
|
65 |
|
64 |
|
+4 |
|
78 |
|
in |
1991 |
|
53 |
|
in |
2013 |
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| Month Avg Max Temperature |
|
76.2 |
|
80.2 |
|
74.1 |
|
+2.1 |
|
81.2 |
|
in |
1983 |
|
68.1 |
|
in |
1917 |
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| Month Avg
Min Temperature |
|
57.1 |
|
64.6 |
|
59.2 |
|
-2.2 |
|
64.8 |
|
in |
1961 |
|
52.7 |
|
in |
1893 |
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| Month Average Temperature |
|
66.8 |
|
72.6 |
|
66.6 |
|
+0.1 |
|
73.1 |
|
in |
1961 |
|
61.4 |
|
in |
1963 |
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| High Heat
Index |
|
80 |
|
76 |
|
71 |
|
+9 |
|
96 |
|
in |
1991 |
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|
|
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| Low Wind
Chill |
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|
40 |
|
in |
1959 |
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| Heating Degree Days |
|
0 |
|
0 |
|
3 |
|
-3 |
|
12 |
|
in |
2013 |
|
0 |
|
in |
2024 |
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| Month Heating DD |
|
8 |
|
5 |
|
23 |
|
-15 |
|
85 |
|
in |
1913 |
|
0 |
|
in |
2015 |
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| Season
Heating DD |
|
10 |
|
5 |
|
30 |
|
-20 |
|
97 |
|
in |
1913 |
|
0 |
|
in |
2015 |
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| Cooling Degree Days |
|
3 |
|
0 |
|
2 |
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+1 |
|
13 |
|
in |
1991 |
|
0 |
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in |
2023 |
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| Month Cooling DD |
|
38 |
|
135 |
|
51 |
|
-13 |
|
148 |
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in |
1961 |
|
7 |
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in |
1975 |
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| Year Cooling DD |
|
684 |
|
707 |
|
588 |
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+96 |
|
840 |
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in |
2020 |
|
280 |
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in |
1902 |
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| Maximum Dew Point |
|
70 |
|
62 |
|
62 |
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+8 |
|
72 |
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in |
1991 |
|
43 |
|
in |
2013 |
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| Minimum
Dew Point |
|
56 |
|
52 |
|
52 |
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+4 |
|
68 |
|
in |
1991 |
|
28 |
|
in |
1959 |
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| Average Dew Point |
|
63 |
|
57 |
|
57 |
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+6 |
|
70 |
|
in |
1991 |
|
38 |
|
in |
1959 |
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| Month Avg Max Dew Point |
|
63.7 |
|
70.2 |
|
64.2 |
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-0.5 |
|
70.2 |
|
in |
2023 |
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55.1 |
|
in |
1975 |
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| Month Avg
Min Dew Point |
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52.9 |
|
62.1 |
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54.8 |
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-1.9 |
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62.1 |
|
in |
2023 |
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44.6 |
|
in |
1967 |
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| Month Average Dew Point |
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58.5 |
|
66.3 |
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59.4 |
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-0.9 |
|
66.3 |
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in |
2023 |
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50.1 |
|
in |
1967 |
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| Precipitation |
|
.00 |
|
.00 |
|
.14 |
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-.14 |
|
2.66 |
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in |
1933 |
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| One Hour
Rain |
|
.00 |
|
.00 |
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|
.76 |
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in |
1995 |
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| Half Hour
Rain |
|
.00 |
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.00 |
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|
.13 |
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in |
2010 |
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| Hourly Rain Rate |
|
.00 |
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.00 |
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1.47 |
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in |
2005 |
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| Month Precipitation |
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.16 |
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2.48 |
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2.05 |
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-1.89 |
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8.56 |
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in |
2021 |
|
.03 |
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in |
1980 |
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| Year Precipitation |
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40.85 |
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38.10 |
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31.46 |
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+9.39 |
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46.35 |
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in |
1998 |
|
17.53 |
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in |
1957 |
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| Snow |
|
0.0 |
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0.0 |
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0.0 |
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+0.0 |
|
0.0 |
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in |
1900 |
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| Snow Depth |
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0 |
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0 |
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0 |
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+0 |
|
0 |
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in |
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| Month Snow |
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#N/A |
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#N/A |
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#N/A |
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#N/A |
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#N/A |
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in |
#N/A |
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#N/A |
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in |
Many |
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| Season Snow |
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September
17, 2024 |
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|
Record |
Record |
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| Observed Daily Data |
|
2024 |
|
2023 |
|
Norm |
|
Depart |
|
Highest |
Lowest |
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| Maximum Humidity |
|
99% |
|
91% |
|
93% |
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+6% |
|
100% |
|
in |
2017 |
|
67% |
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in |
2000 |
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| Minimum
Humidity |
|
75% |
|
51% |
|
61% |
|
+14% |
|
98% |
|
in |
1993 |
|
28% |
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in |
1968 |
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| Average Humidity |
|
87% |
|
71% |
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77% |
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+10% |
|
99% |
|
in |
1993 |
|
54% |
|
in |
1950 |
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| Maximum Barometer |
|
30.28 |
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29.94 |
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30.16 |
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+00.12 |
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30.55 |
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in |
1986 |
|
29.83 |
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in |
1952 |
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| Minimum
Barometer |
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30.17 |
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29.83 |
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29.94 |
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+00.23 |
|
30.37 |
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in |
2011 |
|
29.18 |
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in |
1999 |
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| Average Barometer |
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30.23 |
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29.89 |
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30.05 |
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+00.18 |
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30.43 |
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in |
2011 |
|
29.52 |
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in |
1999 |
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| Average
Wind |
|
2.2 |
|
6.2 |
|
5.5 |
|
-3.3 |
|
18.9 |
|
in |
1999 |
|
0.9 |
|
in |
2006 |
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| Direction |
|
SSE |
|
WNW |
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N |
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|
WNW |
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SSE |
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| High Wind
Gust |
|
12 |
|
19 |
|
20 |
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-8 |
|
50 |
|
in |
1999 |
|
10 |
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in |
2006 |
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| Direction |
|
S |
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SW |
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NNE |
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SW |
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|
S |
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| Maximum Water Temp |
|
68.4 |
|
69.1 |
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68.3 |
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+0.1 |
|
71.1 |
|
in |
2015 |
|
64.8 |
|
in |
2013 |
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| Minimum
Water Temp |
|
67.1 |
|
67.1 |
|
66.4 |
|
+0.7 |
|
69.8 |
|
in |
2021 |
|
61.8 |
|
in |
2013 |
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| Average Water Temp |
|
67.8 |
|
68.1 |
|
67.4 |
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+0.4 |
|
70.2 |
|
in |
2021 |
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63.3 |
|
in |
2013 |
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| Sunrise/ AM Twilight |
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6:27:55 AM |
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6:00:23 AM |
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| Sunset /
PM Twilight |
|
6:49:58 PM |
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7:18:47 PM |
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| Length Of Day |
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12:22:03 |
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| Special
Conditions |
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Dense Fog, Haze |
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| Comments |
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| Hour-by-Hour Weather For
September 17, 2024 |
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| Climate Weather for September 17 |
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| Weather History For September 17 |
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| Weather Calendar |
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| Back To Weather Stat Page |
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