| Portsmouth Rhode Island Weather Almanac |
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| Thursday,
September 21, 2023 |
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| Clear to
Partly Cloudy PM, Cooler |
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| |
|
Climate
Normal Period |
Climate Record Period |
| |
|
1991 -
2020 |
1893 - 2023 |
| |
|
September 21, 2023 |
|
Record |
|
Record |
|
| Observed Daily Data |
|
2023 |
|
2022 |
|
Norm |
|
Depart |
|
Highest |
|
Lowest |
|
| Maximum Temperature |
|
73 |
|
68 |
|
70 |
|
+3 |
|
88 |
|
in |
1914 |
|
57 |
|
in |
1993 |
|
| Minimum
Temperature |
|
54 |
|
57 |
|
56 |
|
-2 |
|
69 |
|
in |
1989 |
|
36 |
|
in |
1956 |
|
| Average Temperature |
|
64 |
|
63 |
|
63 |
|
+1 |
|
75 |
|
in |
1989 |
|
48 |
|
in |
1956 |
|
| Month Avg Max Temperature |
|
78.5 |
|
74.8 |
|
73.5 |
|
+5.0 |
|
81.1 |
|
in |
1983 |
|
68.4 |
|
in |
1913 |
|
| Month
Avg Min Temperature |
|
63.3 |
|
59.8 |
|
58.7 |
|
+4.7 |
|
63.6 |
|
in |
1915 |
|
53.0 |
|
in |
1984 |
|
| Month Average
Temperature |
|
71.2 |
|
67.5 |
|
66.0 |
|
+5.1 |
|
71.8 |
|
in |
1961 |
|
61.8 |
|
in |
1963 |
|
| High
Heat Index |
|
73 |
|
69 |
|
71 |
|
+2 |
|
88 |
|
in |
1895 |
|
|
|
|
|
|
| Low
Wind Chill |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
31 |
|
in |
1956 |
|
| Heating Degree Days |
|
1 |
|
2 |
|
3 |
|
-2 |
|
17 |
|
in |
1956 |
|
0 |
|
in |
2021 |
|
| Month Heating DD |
|
6 |
|
14 |
|
35 |
|
-29 |
|
96 |
|
in |
1956 |
|
0 |
|
in |
1971 |
|
| Season
Heating DD |
|
6 |
|
14 |
|
35 |
|
-29 |
|
127 |
|
in |
1956 |
|
2 |
|
in |
2021 |
|
| Cooling Degree Days |
|
0 |
|
0 |
|
2 |
|
-2 |
|
10 |
|
in |
1989 |
|
0 |
|
in |
2023 |
|
| Month Cooling DD |
|
136 |
|
66 |
|
57 |
|
+79 |
|
158 |
|
in |
1961 |
|
7 |
|
in |
1893 |
|
| Year Cooling DD |
|
708 |
|
777 |
|
594 |
|
+114 |
|
840 |
|
in |
2020 |
|
282 |
|
in |
1902 |
|
| Maximum Dew Point |
|
60 |
|
62 |
|
62 |
|
-2 |
|
71 |
|
in |
2014 |
|
37 |
|
in |
1962 |
|
| Minimum
Dew Point |
|
50 |
|
56 |
|
51 |
|
-1 |
|
68 |
|
in |
1989 |
|
28 |
|
in |
1962 |
|
| Average Dew Point |
|
55 |
|
59 |
|
56 |
|
-1 |
|
69 |
|
in |
1989 |
|
33 |
|
in |
1962 |
|
| Month Avg Max Dew Point |
|
69.3 |
|
65.0 |
|
63.8 |
|
+5.5 |
|
69.3 |
|
in |
2023 |
|
54.9 |
|
in |
1984 |
|
| Month
Avg Min Dew Point |
|
61.0 |
|
56.0 |
|
54.2 |
|
+6.8 |
|
61.0 |
|
in |
2023 |
|
44.2 |
|
in |
1984 |
|
| Month Average Dew Point |
|
65.3 |
|
60.8 |
|
58.9 |
|
+6.4 |
|
65.3 |
|
in |
2023 |
|
49.5 |
|
in |
1984 |
|
| Precipitation |
|
.00 |
|
.01 |
|
.13 |
|
-.13 |
|
6.52 |
|
in |
1961 |
|
|
|
|
|
|
| One
Hour Rain |
|
.00 |
|
.01 |
|
|
|
|
|
.80 |
|
in |
1961 |
|
|
|
|
|
|
| Half
Hour Rain |
|
.00 |
|
.00 |
|
|
|
|
|
.09 |
|
in |
2011 |
|
|
|
|
|
|
| Hourly Rain Rate |
|
.00 |
|
.00 |
|
|
|
|
|
1.42 |
|
in |
2011 |
|
|
|
|
|
|
| Month Precipitation |
|
3.85 |
|
3.27 |
|
2.58 |
|
+1.27 |
|
9.58 |
|
in |
1960 |
|
.10 |
|
in |
1946 |
|
| Year Precipitation |
|
39.47 |
|
28.69 |
|
31.86 |
|
+7.61 |
|
46.35 |
|
in |
1998 |
|
17.53 |
|
in |
1957 |
|
| Snow |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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| Snow Depth |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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| Month Snow |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Season Snow |
|
0.0 |
|
0.0 |
|
0.0 |
|
+0.0 |
|
0.0 |
|
in |
1996 |
|
0.0 |
|
in |
1998 |
|
| |
|
September 21, 2023 |
|
|
Record |
Record |
| Observed Daily Data |
|
2023 |
|
2022 |
|
Norm |
|
Depart |
|
Highest |
Lowest |
| Maximum Humidity |
|
93% |
|
98% |
|
93% |
|
-0% |
|
100% |
|
in |
2016 |
|
67% |
|
in |
1984 |
|
| Minimum
Humidity |
|
50% |
|
75% |
|
61% |
|
-11% |
|
93% |
|
in |
1986 |
|
32% |
|
in |
2020 |
|
| Average Humidity |
|
72% |
|
87% |
|
77% |
|
-6% |
|
97% |
|
in |
1986 |
|
51% |
|
in |
1984 |
|
| Maximum Barometer |
|
30.30 |
|
29.96 |
|
30.14 |
|
+00.16 |
|
30.56 |
|
in |
2020 |
|
29.62 |
|
in |
1976 |
|
| Minimum
Barometer |
|
30.16 |
|
29.82 |
|
29.92 |
|
+00.24 |
|
30.34 |
|
in |
2020 |
|
28.77 |
|
in |
1938 |
|
| Average Barometer |
|
30.23 |
|
29.89 |
|
30.03 |
|
+00.20 |
|
30.45 |
|
in |
2020 |
|
29.50 |
|
in |
1976 |
|
| Average
Wind |
|
5.2 |
|
4.5 |
|
6.2 |
|
-1.0 |
|
22.5 |
|
in |
1961 |
|
1.2 |
|
in |
1994 |
|
| Direction |
|
NNW |
|
NW |
|
SSW |
|
|
|
NNE |
WSW |
| High
Wind Gust |
|
15 |
|
16 |
|
20 |
|
-5 |
|
116 |
|
in |
1938 |
|
9 |
|
in |
1994 |
|
| Direction |
|
N |
|
WSW |
|
SSW |
|
|
|
SE |
SSE |
| Maximum Water Temp |
|
70.5 |
|
71.1 |
|
68.1 |
|
+2.4 |
|
71.2 |
|
in |
2021 |
|
65.1 |
|
in |
2020 |
|
| Minimum
Water Temp |
|
69.3 |
|
69.1 |
|
66.1 |
|
+3.2 |
|
69.3 |
|
in |
2022 |
|
63.7 |
|
in |
2020 |
|
| Average Water Temp |
|
69.9 |
|
70.1 |
|
67.1 |
|
+2.8 |
|
70.1 |
|
in |
2021 |
|
64.4 |
|
in |
2020 |
|
| Sunrise/ AM Twilight |
|
6:31:14 AM |
|
6:04:33 AM |
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| Sunset
/ PM Twilight |
|
6:44:21 PM |
|
7:11:46 PM |
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| Length Of Day |
|
12:13:07 |
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| Special Conditions |
|
None |
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| Comments |
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| Hour-by-Hour Weather For September 21, 2023 |
| Climate Weather for September 21 |
| Weather History For September 21 |
| Weather Calendar |
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