| Portsmouth Rhode Island Weather Almanac |
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| Monday,
September 30, 2024 |
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| Partly
Cloudy, Dense Fog early, to Clear PM, Light Winds and Warmer |
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Climate
Normal Period |
Climate Record Period |
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1991 -
2020 |
1893 - 2024 |
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September 30, 2024 |
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Record |
|
Record |
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| Observed Daily Data |
|
2024 |
|
2024 |
|
Norm |
|
Depart |
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Highest |
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Lowest |
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| Maximum Temperature |
|
72 |
|
59 |
|
68 |
|
+4 |
|
81 |
|
in |
1922 |
|
51 |
|
in |
1992 |
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|
| Minimum
Temperature |
|
55 |
|
55 |
|
53 |
|
+2 |
|
66 |
|
in |
2010 |
|
35 |
|
in |
1951 |
|
|
| Average Temperature |
|
64 |
|
57 |
|
61 |
|
+3 |
|
72 |
|
in |
1959 |
|
45 |
|
in |
1992 |
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| Month Avg Max Temperature |
|
72.9 |
|
73.9 |
|
72.1 |
|
+0.8 |
|
77.8 |
|
in |
1961 |
|
67.6 |
|
in |
1963 |
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| Month
Avg Min Temperature |
|
57.3 |
|
60.3 |
|
57.4 |
|
-0.1 |
|
62.2 |
|
in |
1961 |
|
51.7 |
|
in |
1956 |
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| Month Average Temperature |
|
65.3 |
|
67.5 |
|
64.8 |
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+0.5 |
|
70.2 |
|
in |
1961 |
|
60.2 |
|
in |
1963 |
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| High
Heat Index |
|
72 |
|
60 |
|
67 |
|
+5 |
|
81 |
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in |
1952 |
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| Low Wind
Chill |
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31 |
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in |
1951 |
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| Heating Degree Days |
|
1 |
|
8 |
|
5 |
|
-4 |
|
20 |
|
in |
1992 |
|
0 |
|
in |
2020 |
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| Month Heating DD |
|
36 |
|
61 |
|
73 |
|
-37 |
|
181 |
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in |
1956 |
|
12 |
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in |
1921 |
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| Season
Heating DD |
|
38 |
|
61 |
|
80 |
|
-42 |
|
212 |
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in |
1956 |
|
16 |
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in |
2021 |
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| Cooling Degree Days |
|
0 |
|
0 |
|
1 |
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-1 |
|
7 |
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in |
1959 |
|
0 |
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in |
2024 |
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| Month Cooling DD |
|
46 |
|
136 |
|
66 |
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-20 |
|
186 |
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in |
1961 |
|
7 |
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in |
1893 |
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| Year Cooling DD |
|
692 |
|
708 |
|
603 |
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+89 |
|
867 |
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in |
2020 |
|
288 |
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in |
1902 |
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| Maximum Dew Point |
|
61 |
|
59 |
|
60 |
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+1 |
|
72 |
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in |
2015 |
|
31 |
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in |
1981 |
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| Minimum
Dew Point |
|
53 |
|
51 |
|
48 |
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+5 |
|
65 |
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in |
2010 |
|
20 |
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in |
1981 |
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| Average Dew Point |
|
57 |
|
55 |
|
54 |
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+3 |
|
68 |
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in |
2010 |
|
26 |
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in |
1981 |
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| Month Avg Max Dew Point |
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63.2 |
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66.3 |
|
62.8 |
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+0.4 |
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66.8 |
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in |
2018 |
|
54.6 |
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in |
1984 |
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| Month
Avg Min Dew Point |
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54.1 |
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58.1 |
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52.9 |
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+1.2 |
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58.1 |
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in |
2023 |
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44.1 |
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in |
1984 |
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| Month Average Dew Point |
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58.9 |
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62.4 |
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57.8 |
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+1.1 |
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62.5 |
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in |
2018 |
|
49.4 |
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in |
1984 |
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| Precipitation |
|
.00 |
|
.65 |
|
.14 |
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-.14 |
|
1.84 |
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in |
2015 |
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| One Hour
Rain |
|
.00 |
|
.19 |
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|
.84 |
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in |
2015 |
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| Half
Hour Rain |
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.00 |
|
.10 |
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|
.55 |
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in |
2017 |
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| Hourly Rain Rate |
|
.00 |
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.47 |
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3.08 |
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in |
2015 |
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| Month Precipitation |
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3.09 |
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6.48 |
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3.80 |
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-.71 |
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10.67 |
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in |
1961 |
|
.31 |
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in |
1959 |
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| Year Precipitation |
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43.78 |
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42.10 |
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33.21 |
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+10.57 |
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48.49 |
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in |
1998 |
|
17.64 |
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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 |
|
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
30, 2024 |
|
|
Record |
Record |
|
| Observed Daily Data |
|
2024 |
|
2023 |
|
Norm |
|
Depart |
|
Highest |
Lowest |
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| Maximum Humidity |
|
99% |
|
99% |
|
93% |
|
+6% |
|
100% |
|
in |
2010 |
|
67% |
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in |
1981 |
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| Minimum
Humidity |
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67% |
|
82% |
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58% |
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+9% |
|
93% |
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in |
2014 |
|
25% |
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in |
1981 |
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| Average Humidity |
|
83% |
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91% |
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75% |
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+8% |
|
95% |
|
in |
2014 |
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46% |
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in |
1981 |
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| Maximum Barometer |
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30.08 |
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30.16 |
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30.13 |
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-00.05 |
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30.59 |
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in |
1945 |
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29.53 |
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in |
1997 |
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| Minimum
Barometer |
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30.01 |
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30.10 |
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29.91 |
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+00.10 |
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30.38 |
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in |
2007 |
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29.29 |
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in |
1972 |
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| Average Barometer |
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30.05 |
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30.13 |
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30.02 |
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+00.02 |
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30.46 |
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in |
2007 |
|
29.43 |
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in |
1997 |
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| Average
Wind |
|
3.5 |
|
10.8 |
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6.7 |
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-3.2 |
|
18.7 |
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in |
2001 |
|
2.5 |
|
in |
2008 |
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| Direction |
|
E |
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N |
|
SW |
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|
NNE |
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|
SE |
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| High
Wind Gust |
|
13 |
|
24 |
|
22 |
|
-9 |
|
51 |
|
in |
2020 |
|
11 |
|
in |
1970 |
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| Direction |
|
SE |
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N |
|
S |
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|
S |
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|
WNW |
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| Maximum Water Temp |
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65.8 |
|
64.0 |
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65.7 |
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+0.1 |
|
68.5 |
|
in |
2015 |
|
62.0 |
|
in |
2010 |
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| Minimum
Water Temp |
|
64.9 |
|
62.8 |
|
64.2 |
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+0.7 |
|
67.5 |
|
in |
2015 |
|
60.3 |
|
in |
2001 |
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| Average Water Temp |
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65.4 |
|
63.4 |
|
65.0 |
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+0.4 |
|
68.0 |
|
in |
2015 |
|
61.3 |
|
in |
2001 |
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| Sunrise/ AM Twilight |
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6:41:22 AM |
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6:13:55 AM |
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| Sunset /
PM Twilight |
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6:27:35 PM |
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6:56:15 PM |
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| Length Of Day |
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11:46:13 |
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| Special
Conditions |
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Dense Fog |
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| Comments |
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| Hour-by-Hour Weather For September 30, 2024 |
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| Climate Weather for September 30 |
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| Weather History For September 30 |
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| Weather Calendar |
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| Back To Weather Stat Page |
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