| Portsmouth Rhode Island Weather Almanac |
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| Sunday, July
20, 2025 |
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| Cloudy early
then Mostly Cloudy, Light Rain 9pm, Warmer and Humid |
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Climate
Normal Period |
Climate Record Period |
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|
1991 -
2020 |
1893 - 2025 |
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July 20 |
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|
Record |
|
Record |
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| Observed Daily Data |
|
2025 |
|
2024 |
|
Norm |
|
Depart |
|
Highest |
|
Lowest |
|
|
| Maximum Temperature |
|
81 |
|
80 |
|
80 |
|
+1 |
|
94 |
|
in |
2019 |
|
66 |
|
in |
1902 |
|
|
| Minimum
Temperature |
|
70 |
|
66 |
|
65 |
|
+5 |
|
74 |
|
in |
2019 |
|
55 |
|
in |
2000 |
|
|
| Average Temperature |
|
76 |
|
73 |
|
73 |
|
+3 |
|
84 |
|
in |
2019 |
|
63 |
|
in |
1903 |
|
|
| Month Avg Max Temperature |
|
81.3 |
|
82.1 |
|
79.6 |
|
+1.7 |
|
84.6 |
|
in |
1955 |
|
74.6 |
|
in |
1902 |
|
|
| Month Avg
Min Temperature |
|
67.3 |
|
68.7 |
|
64.4 |
|
+2.9 |
|
71.3 |
|
in |
2013 |
|
57.9 |
|
in |
1962 |
|
|
| Month Average
Temperature |
|
74.5 |
|
75.6 |
|
72.4 |
|
+2.2 |
|
77.5 |
|
in |
2013 |
|
67.7 |
|
in |
2009 |
|
|
| High Heat
Index |
|
85 |
|
83 |
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|
|
|
|
113 |
|
in |
2019 |
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|
|
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|
|
| Low Wind Chill |
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|
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|
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|
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|
0 |
|
in |
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| Heating Degree Days |
|
0 |
|
0 |
|
0 |
|
+0 |
|
2 |
|
in |
1903 |
|
0 |
|
in |
Many |
|
|
| Month Heating DD |
|
0 |
|
0 |
|
3 |
|
-3 |
|
23 |
|
in |
1914 |
|
0 |
|
in |
Many |
|
|
| Season
Heating DD |
|
0 |
|
0 |
|
3 |
|
-3 |
|
23 |
|
in |
1914 |
|
0 |
|
in |
Many |
|
|
| Cooling Degree Days |
|
11 |
|
8 |
|
8 |
|
+3 |
|
19 |
|
in |
2019 |
|
0 |
|
in |
2012 |
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| Month Cooling DD |
|
190 |
|
212 |
|
147 |
|
+43 |
|
250 |
|
in |
2013 |
|
61 |
|
in |
1895 |
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| Year Cooling DD |
|
345 |
|
350 |
|
240 |
|
+105 |
|
362 |
|
in |
2010 |
|
93 |
|
in |
1902 |
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| Maximum Dew Point |
|
74 |
|
70 |
|
69 |
|
+5 |
|
79 |
|
in |
2020 |
|
51 |
|
in |
1965 |
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| Minimum
Dew Point |
|
67 |
|
63 |
|
61 |
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+6 |
|
72 |
|
in |
2019 |
|
43 |
|
in |
1965 |
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| Average Dew Point |
|
71 |
|
67 |
|
65 |
|
+6 |
|
76 |
|
in |
2019 |
|
47 |
|
in |
1965 |
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| Month Avg Max Dew Point |
|
73.5 |
|
73.7 |
|
68.4 |
|
+5.2 |
|
74.9 |
|
in |
2023 |
|
60.8 |
|
in |
1978 |
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| Month Avg
Min Dew Point |
|
65.1 |
|
66.2 |
|
59.9 |
|
+5.2 |
|
68.9 |
|
in |
2013 |
|
51.0 |
|
in |
1962 |
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| Month Average Dew Point |
|
69.3 |
|
69.9 |
|
64.1 |
|
+5.2 |
|
71.6 |
|
in |
2013 |
|
55.9 |
|
in |
1962 |
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| Precipitation |
|
.02 |
|
.00 |
|
.09 |
|
-.07 |
|
1.57 |
|
in |
1988 |
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|
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| One Hour
Rain |
|
.02 |
|
.00 |
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|
.33 |
|
in |
1982 |
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| Half Hour
Rain |
|
.02 |
|
.00 |
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|
.04 |
|
in |
2014 |
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| Hourly Rain Rate |
|
.04 |
|
.00 |
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|
.37 |
|
in |
2014 |
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| Month Precipitation |
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1.83 |
|
.91 |
|
2.00 |
|
-.17 |
|
5.46 |
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in |
2023 |
|
.16 |
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in |
2002 |
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| Year Precipitation |
|
23.20 |
|
34.86 |
|
24.70 |
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-1.50 |
|
40.76 |
|
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 |
|
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 |
|
#N/A |
|
#N/A |
|
#N/A |
|
#N/A |
|
in |
#N/A |
|
#N/A |
|
in |
#N/A |
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July 20 |
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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 |
|
96% |
|
93% |
|
92% |
|
+4% |
|
100% |
|
in |
2004 |
|
64% |
|
in |
1957 |
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| Minimum
Humidity |
|
82% |
|
66% |
|
60% |
|
+22% |
|
92% |
|
in |
1988 |
|
30% |
|
in |
1957 |
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| Average Humidity |
|
89% |
|
80% |
|
76% |
|
+13% |
|
96% |
|
in |
1988 |
|
47% |
|
in |
1957 |
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| Maximum Barometer |
|
30.00 |
|
30.13 |
|
30.01 |
|
-00.01 |
|
30.24 |
|
in |
2006 |
|
29.66 |
|
in |
1963 |
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| Minimum
Barometer |
|
29.70 |
|
30.02 |
|
29.82 |
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-00.12 |
|
30.15 |
|
in |
1956 |
|
29.48 |
|
in |
1963 |
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| Average Barometer |
|
29.85 |
|
30.08 |
|
29.92 |
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-00.07 |
|
30.20 |
|
in |
1956 |
|
29.57 |
|
in |
1963 |
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| Average
Wind |
|
6.4 |
|
5.9 |
|
5.8 |
|
+0.6 |
|
11.3 |
|
in |
1974 |
|
2.1 |
|
in |
2009 |
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| Direction |
|
S |
|
SSW |
|
SW |
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N |
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|
SE |
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| High Wind
Gust |
|
17 |
|
25 |
|
20 |
|
-3 |
|
34 |
|
in |
1996 |
|
10 |
|
in |
1967 |
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| Direction |
|
S |
|
SSW |
|
SSW |
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|
WNW |
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N |
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| Maximum Water Temp |
|
72.9 |
|
74.5 |
|
71.7 |
|
+1.2 |
|
77.4 |
|
in |
2023 |
|
67.5 |
|
in |
2000 |
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| Minimum
Water Temp |
|
70.2 |
|
72.0 |
|
68.0 |
|
+2.2 |
|
72.5 |
|
in |
2021 |
|
64.2 |
|
in |
2003 |
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| Average Water Temp |
|
71.6 |
|
73.3 |
|
69.8 |
|
+1.7 |
|
74.3 |
|
in |
2023 |
|
66.5 |
|
in |
2000 |
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| Sunrise/ AM Twilight |
|
5:28:40 AM |
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4:57:34 AM |
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| Sunset /
PM Twilight |
|
8:13:47 PM |
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8:45:49 PM |
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| Length Of Day |
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14:45:59 |
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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 20, 2025 |
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| Climate Weather for July 20 |
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| Weather History For July 20 |
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| Weather Calendar |
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| Back To Weather Stat Page |
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