| Portsmouth Rhode Island Weather Almanac |
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| Thursday, July
17, 2025 |
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| Cloudy and
Fog early then Partly Cloudy, Very Light Rain 1pm, Continued Hot and Very
Muggy |
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Climate
Normal Period |
Climate Record Period |
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|
1991 -
2020 |
1893 - 2025 |
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July 17 |
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Record |
|
Record |
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| Observed Daily Data |
|
2025 |
|
2024 |
|
Norm |
|
Depart |
|
Highest |
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Lowest |
|
|
| Maximum Temperature |
|
83 |
|
85 |
|
80 |
|
+3 |
|
90 |
|
in |
1953 |
|
67 |
|
in |
1989 |
|
|
| Minimum
Temperature |
|
77 |
|
71 |
|
65 |
|
+12 |
|
77 |
|
in |
2025 |
|
49 |
|
in |
1954 |
|
|
| Average Temperature |
|
80 |
|
78 |
|
73 |
|
+7 |
|
80 |
|
in |
2025 |
|
63 |
|
in |
1989 |
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| Month Avg Max Temperature |
|
81.3 |
|
82.1 |
|
79.5 |
|
+1.8 |
|
84.8 |
|
in |
1993 |
|
73.9 |
|
in |
1906 |
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| Month Avg
Min Temperature |
|
67.5 |
|
68.9 |
|
64.2 |
|
+3.2 |
|
70.7 |
|
in |
2013 |
|
57.5 |
|
in |
1962 |
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| Month Average
Temperature |
|
74.6 |
|
75.7 |
|
72.2 |
|
+2.4 |
|
76.8 |
|
in |
2013 |
|
66.9 |
|
in |
1933 |
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| High Heat
Index |
|
93 |
|
93 |
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|
100 |
|
in |
2021 |
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| Low Wind
Chill |
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|
49 |
|
in |
1954 |
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| Heating Degree Days |
|
0 |
|
0 |
|
0 |
|
+0 |
|
2 |
|
in |
1989 |
|
0 |
|
in |
Many |
|
|
| Month Heating DD |
|
0 |
|
0 |
|
3 |
|
-3 |
|
23 |
|
in |
1914 |
|
0 |
|
in |
Many |
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| Season
Heating DD |
|
0 |
|
0 |
|
3 |
|
-3 |
|
23 |
|
in |
1914 |
|
0 |
|
in |
Many |
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| Cooling Degree Days |
|
15 |
|
13 |
|
8 |
|
+7 |
|
15 |
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in |
2025 |
|
0 |
|
in |
2020 |
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| Month Cooling DD |
|
164 |
|
182 |
|
123 |
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+41 |
|
200 |
|
in |
2013 |
|
44 |
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in |
2009 |
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| Year Cooling DD |
|
319 |
|
320 |
|
216 |
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+103 |
|
324 |
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in |
2010 |
|
78 |
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in |
2009 |
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| Maximum Dew Point |
|
78 |
|
78 |
|
69 |
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+9 |
|
79 |
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in |
2021 |
|
53 |
|
in |
1966 |
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| Minimum
Dew Point |
|
73 |
|
68 |
|
61 |
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+12 |
|
73 |
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in |
2025 |
|
44 |
|
in |
1993 |
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| Average Dew Point |
|
76 |
|
73 |
|
65 |
|
+11 |
|
76 |
|
in |
2025 |
|
49 |
|
in |
1993 |
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| Month Avg Max Dew Point |
|
73.7 |
|
74.3 |
|
68.2 |
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+5.5 |
|
74.9 |
|
in |
2023 |
|
59.8 |
|
in |
1978 |
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| Month Avg
Min Dew Point |
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65.5 |
|
67.1 |
|
59.6 |
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+5.8 |
|
68.2 |
|
in |
2013 |
|
50.3 |
|
in |
1962 |
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| Month Average Dew Point |
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69.6 |
|
70.7 |
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63.9 |
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+5.6 |
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71.1 |
|
in |
2013 |
|
55.4 |
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in |
1962 |
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| Precipitation |
|
T |
|
.00 |
|
.09 |
|
-.09 |
|
2.67 |
|
in |
1989 |
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| One Hour
Rain |
|
T |
|
.00 |
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|
.69 |
|
in |
1989 |
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| Half Hour
Rain |
|
.00 |
|
.00 |
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|
.07 |
|
in |
2020 |
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| Hourly Rain Rate |
|
.00 |
|
.00 |
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2.07 |
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in |
2009 |
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| Month Precipitation |
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1.81 |
|
.90 |
|
1.73 |
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+.08 |
|
5.46 |
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in |
2023 |
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T |
|
in |
1982 |
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| Year Precipitation |
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23.18 |
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34.85 |
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24.43 |
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-1.25 |
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40.76 |
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in |
1998 |
|
13.52 |
|
in |
1957 |
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| Snow |
|
0.0 |
|
0.0 |
|
#N/A |
|
#N/A |
|
0.0 |
|
in |
1900 |
|
0.0 |
|
in |
Many |
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| Snow Depth |
|
0 |
|
0 |
|
0 |
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|
0 |
|
in |
1900 |
|
0 |
|
in |
Many |
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| Month Snow |
|
0.0 |
|
0.0 |
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T |
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#N/A |
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in |
#N/A |
|
0.0 |
|
in |
Many |
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| Season Snow |
|
#N/A |
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#N/A |
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#N/A |
|
#N/A |
|
#N/A |
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in |
#N/A |
|
#N/A |
|
in |
#N/A |
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July 17 |
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Record |
Record |
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| Observed Daily Data |
|
2025 |
|
2024 |
|
Norm |
|
Depart |
|
Highest |
Lowest |
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| Maximum Humidity |
|
99% |
|
99% |
|
92% |
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+7% |
|
100% |
|
in |
2017 |
|
64% |
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in |
1952 |
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| Minimum
Humidity |
|
78% |
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68% |
|
57% |
|
+21% |
|
91% |
|
in |
2005 |
|
29% |
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in |
1957 |
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| Average Humidity |
|
89% |
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84% |
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75% |
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+14% |
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96% |
|
in |
2005 |
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51% |
|
in |
1952 |
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| Maximum Barometer |
|
29.95 |
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29.89 |
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30.04 |
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-00.09 |
|
30.39 |
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in |
1945 |
|
29.77 |
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in |
1983 |
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| Minimum
Barometer |
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29.73 |
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29.77 |
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29.87 |
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-00.14 |
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30.09 |
|
in |
2005 |
|
29.53 |
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in |
1980 |
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| Average Barometer |
|
29.84 |
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29.83 |
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29.95 |
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-00.11 |
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30.17 |
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in |
1990 |
|
29.68 |
|
in |
1983 |
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| Average
Wind |
|
8.3 |
|
6.2 |
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5.3 |
|
+3.0 |
|
12.1 |
|
in |
1971 |
|
2.2 |
|
in |
2006 |
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| Direction |
|
SSW |
|
SSW |
|
SSW |
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|
SW |
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SSE |
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| High Wind
Gust |
|
28 |
|
22 |
|
20 |
|
+8 |
|
36 |
|
in |
1989 |
|
12 |
|
in |
2017 |
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| Direction |
|
SW |
|
SW |
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SSW |
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NE |
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SSE |
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| Maximum Water Temp |
|
73.6 |
|
76.5 |
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71.6 |
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+2.0 |
|
78.4 |
|
in |
2013 |
|
66.7 |
|
in |
2020 |
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| Minimum
Water Temp |
|
71.6 |
|
73.2 |
|
67.8 |
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+3.8 |
|
74.9 |
|
in |
2024 |
|
62.1 |
|
in |
2001 |
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| Average Water Temp |
|
72.6 |
|
74.9 |
|
69.7 |
|
+2.9 |
|
75.7 |
|
in |
2024 |
|
65.7 |
|
in |
2020 |
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| Sunrise/ AM Twilight |
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5:26:05 AM |
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4:54:40 AM |
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| Sunset /
PM Twilight |
|
8:16:01 PM |
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8:48:22 PM |
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| Length Of Day |
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14:50:44 |
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| Special
Conditions |
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Fog |
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| Comments |
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| Hour-by-Hour Weather For July 17, 2025 |
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| Climate Weather for July 17 |
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| Weather History For July 17 |
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| Weather Calendar |
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| Back To Weather Stat Page |
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