| Portsmouth Rhode Island Weather Almanac |
|
|
|
|
|
|
|
|
|
| Wednesday,
December 29, 2021 |
|
|
|
|
|
|
|
|
|
| Cloudy, Very
Light Shower & Fog early, Light Winds, Continued Warm |
|
|
|
|
|
|
|
|
|
| |
|
Climate
Normal Period |
Climate Record Period |
|
|
|
|
|
|
|
|
| |
|
1991 -
2020 |
1893 - 2021 |
|
|
|
|
|
|
|
|
| |
|
December 29, 2021 |
|
Record |
|
Record |
|
|
|
|
|
|
|
|
|
| Observed Daily Data |
|
2021 |
|
2020 |
|
Norm |
|
Depart |
|
Highest |
|
Lowest |
|
|
|
|
|
|
|
|
|
| Maximum Temperature |
|
42 |
|
42 |
|
40 |
|
+2 |
|
58 |
|
in |
1984 |
|
14 |
|
in |
1917 |
|
|
|
|
|
|
|
|
|
| Minimum
Temperature |
|
36 |
|
25 |
|
27 |
|
+9 |
|
47 |
|
in |
1984 |
|
-8 |
|
in |
1917 |
|
|
|
|
|
|
|
|
|
| Average Temperature |
|
39 |
|
34 |
|
34 |
|
+5 |
|
53 |
|
in |
1984 |
|
3 |
|
in |
1917 |
|
|
|
|
|
|
|
|
|
| Month Avg Max Temperature |
|
46.2 |
|
43.2 |
|
43.4 |
|
+2.8 |
|
54.3 |
|
in |
2015 |
|
30.3 |
|
in |
1989 |
|
|
|
|
|
|
|
|
|
| Month Avg
Min Temperature |
|
33.7 |
|
31.0 |
|
30.2 |
|
+3.4 |
|
41.9 |
|
in |
2015 |
|
14.1 |
|
in |
1989 |
|
|
|
|
|
|
|
|
|
| Month Average
Temperature |
|
40.2 |
|
37.4 |
|
36.8 |
|
+3.4 |
|
48.4 |
|
in |
2015 |
|
22.4 |
|
in |
1989 |
|
|
|
|
|
|
|
|
|
| High Heat Index |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Low Wind Chill |
|
32 |
|
17 |
|
17 |
|
+15 |
|
|
|
|
|
|
-23 |
|
in |
1917 |
|
|
|
|
|
|
|
|
|
| Heating Degree Days |
|
26 |
|
31 |
|
31 |
|
-5 |
|
62 |
|
in |
1917 |
|
12 |
|
in |
1984 |
|
|
|
|
|
|
|
|
|
| Month HDD |
|
720 |
|
801 |
|
816 |
|
-96 |
|
1234 |
|
in |
1989 |
|
480 |
|
in |
2015 |
|
|
|
|
|
|
|
|
|
| Season HDD |
|
1514 |
|
1594 |
|
1806 |
|
-292 |
|
2412 |
|
in |
1904 |
|
1275 |
|
in |
2015 |
|
|
|
|
|
|
|
|
|
| Cooling Degree Days |
|
0 |
|
0 |
|
0 |
|
+0 |
|
|
|
in |
|
|
|
|
in |
|
|
|
|
|
|
|
|
|
|
| Month CDD |
|
0 |
|
0 |
|
0 |
|
+0 |
|
0 |
|
in |
|
|
|
|
in |
|
|
|
|
|
|
|
|
|
|
| Year Cooling Degree Days |
|
795 |
|
871 |
|
609 |
|
+186 |
|
871 |
|
in |
2020 |
|
290 |
|
in |
1902 |
|
|
|
|
|
|
|
|
|
| Maximum Dew Point |
|
37 |
|
37 |
|
33 |
|
+4 |
|
53 |
|
in |
2018 |
|
2 |
|
in |
2017 |
|
|
|
|
|
|
|
|
|
| Minimum
Dew Point |
|
33 |
|
8 |
|
17 |
|
+16 |
|
45 |
|
in |
1984 |
|
-9 |
|
in |
1993 |
|
|
|
|
|
|
|
|
|
| Average Dew Point |
|
35 |
|
23 |
|
25 |
|
+10 |
|
48 |
|
in |
2005 |
|
-1 |
|
in |
2017 |
|
|
|
|
|
|
|
|
|
| Month Avg Max Dew Point |
|
40.0 |
|
36.9 |
|
34.2 |
|
+5.8 |
|
49.6 |
|
in |
2015 |
|
15.2 |
|
in |
1989 |
|
|
|
|
|
|
|
|
|
| Month Avg
Min Dew Point |
|
22.4 |
|
23.2 |
|
18.7 |
|
+3.7 |
|
36.3 |
|
in |
2015 |
|
-1.2 |
|
in |
1989 |
|
|
|
|
|
|
|
|
|
| Month Average Dew Point |
|
31.4 |
|
30.3 |
|
26.5 |
|
+4.9 |
|
43.2 |
|
in |
2015 |
|
7.0 |
|
in |
1989 |
|
|
|
|
|
|
|
|
|
| Precipitation |
|
.01 |
|
.00 |
|
.13 |
|
-.12 |
|
1.89 |
|
in |
1901 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| One Hour |
|
.01 |
|
.00 |
|
|
|
|
|
.35 |
|
in |
2013 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Hourly Rate |
|
.00 |
|
.00 |
|
|
|
|
|
1.92 |
|
in |
2005 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Month Precipitation |
|
1.67 |
|
6.08 |
|
4.27 |
|
-2.60 |
|
9.28 |
|
in |
1936 |
|
.58 |
|
in |
1955 |
|
|
|
|
|
|
|
|
|
| Year Precipitation |
|
47.25 |
|
42.96 |
|
45.70 |
|
+1.55 |
|
65.49 |
|
in |
1983 |
|
27.66 |
|
in |
1965 |
|
|
|
|
|
|
|
|
|
| Snow |
|
0.0 |
|
0.0 |
|
0.3 |
|
-0.3 |
|
8.3 |
|
in |
1945 |
|
|
|
in |
|
|
|
|
|
|
|
|
|
|
| Snow Depth |
|
0 |
|
0 |
|
|
|
|
|
15 |
|
in |
1947 |
|
|
|
in |
|
|
|
|
|
|
|
|
|
|
| Month Snow |
|
0.8 |
|
7.4 |
|
5.9 |
|
-5.1 |
|
21.7 |
|
in |
1981 |
|
T |
|
in |
2011 |
|
|
|
|
|
|
|
|
|
| Season Snow |
|
0.8 |
|
8.0 |
|
6.5 |
|
-5.7 |
|
22.9 |
|
in |
1904 |
|
T |
|
in |
1999 |
|
|
|
|
|
|
|
|
|
| |
|
December
29, 2021 |
|
|
Record |
Record |
|
|
|
|
|
|
|
|
| Observed Daily Data |
|
2021 |
|
2020 |
|
Norm |
|
Depart |
|
Highest |
Lowest |
|
|
|
|
|
|
|
|
| Maximum Humidity |
|
93% |
|
83% |
|
86% |
|
+7% |
|
100% |
|
in |
2018 |
|
54% |
|
in |
1952 |
|
|
|
|
|
|
|
|
|
| Minimum
Humidity |
|
79% |
|
33% |
|
57% |
|
+22% |
|
95% |
|
in |
1990 |
|
17% |
|
in |
1994 |
|
|
|
|
|
|
|
|
|
| Average Humidity |
|
86% |
|
58% |
|
71% |
|
+15% |
|
98% |
|
in |
1990 |
|
39% |
|
in |
1949 |
|
|
|
|
|
|
|
|
|
| Maximum Barometer |
|
30.02 |
|
30.50 |
|
30.15 |
|
-00.13 |
|
30.82 |
|
in |
1933 |
|
29.49 |
|
in |
1976 |
|
|
|
|
|
|
|
|
|
| Minimum
Barometer |
|
29.85 |
|
30.05 |
|
29.75 |
|
+00.10 |
|
30.43 |
|
in |
2006 |
|
28.86 |
|
in |
1956 |
|
|
|
|
|
|
|
|
|
| Average Barometer |
|
29.94 |
|
30.28 |
|
29.95 |
|
-00.02 |
|
30.57 |
|
in |
2006 |
|
29.34 |
|
in |
1976 |
|
|
|
|
|
|
|
|
|
| Average Wind |
|
2.9 |
|
11.0 |
|
8.0 |
|
-5.1 |
|
17.9 |
|
in |
2009 |
|
1.5 |
|
in |
1992 |
|
|
|
|
|
|
|
|
|
| Direction |
|
N |
|
NW |
|
WNW |
|
|
|
NW |
|
|
|
|
NNE |
|
|
|
|
|
|
|
|
|
|
|
|
| High Wind Gust |
|
11 |
|
33 |
|
26 |
|
-15 |
|
47 |
|
in |
2009 |
|
7 |
|
in |
1992 |
|
|
|
|
|
|
|
|
|
| Direction |
|
N |
|
NNW |
|
NW |
|
|
|
NW |
|
|
|
|
NW |
|
|
|
|
|
|
|
|
|
|
|
|
| Maximum Water Temp |
|
47.8 |
|
45.0 |
|
43.8 |
|
+4.0 |
|
49.0 |
|
in |
2006 |
|
39.0 |
|
in |
2010 |
|
|
|
|
|
|
|
|
|
| Minimum
Water Temp |
|
46.0 |
|
41.7 |
|
41.1 |
|
+4.9 |
|
46.6 |
|
in |
2015 |
|
#N/A |
|
in |
2017 |
|
|
|
|
|
|
|
|
|
| Average Water Temp |
|
46.9 |
|
43.4 |
|
42.5 |
|
+4.4 |
|
47.4 |
|
in |
2015 |
|
37.2 |
|
in |
2017 |
|
|
|
|
|
|
|
|
|
| Sunrise/ AM Twilight |
|
7:11:15 AM |
|
6:41:35 AM |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Sunset /
PM Twilight |
|
4:23:25 PM |
|
4:53:05 PM |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Length Of Day |
|
9:12:10 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Special Conditions |
|
Fog |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Comments |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Hour-by-Hour Weather For December 29, 2021 |
|
|
|
|
|
|
|
|
|
| Climate Weather for December 29 |
|
|
|
|
|
|
|
|
|
| Weather History For December 29 |
|
|
|
|
|
|
|
|
|
| Weather Calendar |
|
|
|
|
|
|
|
|
|
| Back
To Weather Stat Page |
|
|
|
|
|
|
|
|
|
| Home |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|