| Portsmouth Rhode Island Weather Almanac |
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| Friday, July
18, 2025 |
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| Clear
Morning, Partly Cloudy Day to Clear Evening, Cooler & Less Humid |
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Climate
Normal Period |
Climate Record Period |
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1991 -
2020 |
1893 - 2025 |
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July 18 |
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Record |
|
Record |
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| Observed Daily Data |
|
2025 |
|
2024 |
|
Norm |
|
Depart |
|
Highest |
|
Lowest |
|
|
| Maximum Temperature |
|
81 |
|
85 |
|
80 |
|
+1 |
|
92 |
|
in |
2012 |
|
68 |
|
in |
1913 |
|
|
| Minimum
Temperature |
|
65 |
|
72 |
|
65 |
|
+0 |
|
74 |
|
in |
2013 |
|
53 |
|
in |
1956 |
|
|
| Average Temperature |
|
73 |
|
79 |
|
73 |
|
+0 |
|
83 |
|
in |
2013 |
|
64 |
|
in |
1962 |
|
|
| Month Avg Max Temperature |
|
81.3 |
|
82.3 |
|
79.6 |
|
+1.7 |
|
85.0 |
|
in |
1955 |
|
74.4 |
|
in |
1906 |
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| Month Avg
Min Temperature |
|
67.3 |
|
69.1 |
|
64.3 |
|
+3.1 |
|
70.9 |
|
in |
2013 |
|
57.5 |
|
in |
1962 |
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| Month Average
Temperature |
|
74.6 |
|
75.9 |
|
72.3 |
|
+2.3 |
|
77.1 |
|
in |
2013 |
|
67.4 |
|
in |
2009 |
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| High
Heat Index |
|
83 |
|
90 |
|
|
|
|
|
106 |
|
in |
2012 |
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|
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| Low Wind Chill |
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|
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|
0 |
|
in |
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| Heating Degree Days |
|
0 |
|
0 |
|
0 |
|
+0 |
|
1 |
|
in |
1962 |
|
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 |
|
8 |
|
14 |
|
8 |
|
+0 |
|
18 |
|
in |
2013 |
|
0 |
|
in |
1989 |
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| Month Cooling DD |
|
172 |
|
196 |
|
131 |
|
+41 |
|
218 |
|
in |
2013 |
|
52 |
|
in |
1895 |
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| Year Cooling DD |
|
327 |
|
334 |
|
224 |
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+103 |
|
339 |
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in |
2010 |
|
86 |
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in |
1918 |
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| Maximum Dew Point |
|
74 |
|
74 |
|
69 |
|
+5 |
|
77 |
|
in |
2023 |
|
53 |
|
in |
1976 |
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| Minimum
Dew Point |
|
60 |
|
62 |
|
61 |
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-1 |
|
72 |
|
in |
2013 |
|
45 |
|
in |
1993 |
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| Average Dew Point |
|
67 |
|
68 |
|
65 |
|
+2 |
|
75 |
|
in |
2013 |
|
51 |
|
in |
1956 |
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| Month Avg Max Dew Point |
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73.7 |
|
74.3 |
|
68.3 |
|
+5.4 |
|
75.0 |
|
in |
2023 |
|
60.1 |
|
in |
1978 |
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| Month Avg
Min Dew Point |
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65.2 |
|
66.8 |
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59.7 |
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+5.4 |
|
68.4 |
|
in |
2013 |
|
50.5 |
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in |
1962 |
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| Month Average Dew Point |
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69.4 |
|
70.5 |
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64.0 |
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+5.4 |
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71.3 |
|
in |
2013 |
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55.6 |
|
in |
1962 |
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| Precipitation |
|
.00 |
|
.01 |
|
.09 |
|
-.09 |
|
.98 |
|
in |
2007 |
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| One Hour
Rain |
|
.00 |
|
.01 |
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|
.71 |
|
in |
2006 |
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| Half Hour
Rain |
|
.00 |
|
.01 |
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|
.64 |
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in |
2006 |
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| Hourly Rain Rate |
|
.00 |
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.00 |
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7.38 |
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in |
2006 |
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| Month Precipitation |
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1.81 |
|
.91 |
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1.82 |
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-.01 |
|
5.46 |
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in |
2023 |
|
T |
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in |
1982 |
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| Year Precipitation |
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23.18 |
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34.86 |
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24.52 |
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-1.34 |
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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 |
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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 |
|
#N/A |
|
#N/A |
|
#N/A |
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in |
#N/A |
|
#N/A |
|
in |
#N/A |
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July 18 |
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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 |
|
89% |
|
99% |
|
93% |
|
-4% |
|
100% |
|
in |
2017 |
|
77% |
|
in |
1969 |
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| Minimum
Humidity |
|
49% |
|
59% |
|
59% |
|
-10% |
|
92% |
|
in |
2005 |
|
27% |
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in |
1957 |
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| Average Humidity |
|
69% |
|
79% |
|
76% |
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-7% |
|
96% |
|
in |
2005 |
|
54% |
|
in |
1993 |
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| Maximum Barometer |
|
30.08 |
|
29.96 |
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30.03 |
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+00.05 |
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30.38 |
|
in |
1935 |
|
29.74 |
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in |
1997 |
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| Minimum
Barometer |
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29.75 |
|
29.77 |
|
29.85 |
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-00.10 |
|
30.10 |
|
in |
1967 |
|
29.56 |
|
in |
1984 |
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| Average Barometer |
|
29.92 |
|
29.87 |
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29.94 |
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-00.02 |
|
30.15 |
|
in |
1967 |
|
29.70 |
|
in |
1997 |
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| Average
Wind |
|
7.2 |
|
6.3 |
|
5.3 |
|
+1.9 |
|
10.7 |
|
in |
1974 |
|
1.3 |
|
in |
1994 |
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| Direction |
|
NW |
|
NW |
|
SSW |
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|
SW |
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|
N |
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| High
Wind Gust |
|
28 |
|
17 |
|
20 |
|
+8 |
|
42 |
|
in |
2012 |
|
10 |
|
in |
1994 |
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| Direction |
|
NW |
|
WSW |
|
SSW |
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NNW |
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|
N |
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| Maximum Water Temp |
|
72.7 |
|
76.5 |
|
71.9 |
|
+0.8 |
|
77.8 |
|
in |
2013 |
|
68.3 |
|
in |
2004 |
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| Minimum
Water Temp |
|
69.1 |
|
73.6 |
|
68.0 |
|
+1.1 |
|
73.6 |
|
in |
2024 |
|
63.1 |
|
in |
2001 |
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| Average Water Temp |
|
70.9 |
|
75.1 |
|
70.0 |
|
+0.9 |
|
75.1 |
|
in |
2024 |
|
65.8 |
|
in |
2004 |
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| Sunrise/ AM Twilight |
|
5:26:56 AM |
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4:55:37 AM |
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| Sunset /
PM Twilight |
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8:15:18 PM |
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8:47:33 PM |
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| Length Of Day |
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14:49:11 |
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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 July 18, 2025 |
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| Climate Weather for July 18 |
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| Weather History For July 18 |
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| Weather Calendar |
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| Back To Weather Stat Page |
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