| Portsmouth Rhode Island
Weather Almanac |
|
|
|
|
|
|
|
|
| Wednesday, December 30, 2020 |
|
|
|
|
|
|
|
|
| Partly Cloudy and Cold early to Mostly Cloudy and Warmer PM |
|
|
|
|
|
|
|
|
| Climate Normal
Period |
|
Climate Record Period |
|
|
|
|
|
|
|
|
|
| 1981- 2010 |
|
1893 - 2020 |
|
|
|
|
|
|
|
|
|
| |
|
December
30, 2020 |
|
|
Record |
Record |
|
|
|
|
|
|
|
|
| Observed Daily Data |
|
Observed |
|
2019 |
|
Normal |
|
Depart |
|
Highest |
Lowest |
|
|
|
|
|
|
|
|
| Maximum Temperature |
|
45 |
|
38 |
|
39 |
|
+6 |
|
60 |
|
in |
1984 |
|
5 |
|
in |
1917 |
|
|
|
|
|
|
|
|
|
| Minimum
Temperature |
|
23 |
|
36 |
|
24 |
|
-1 |
|
48 |
|
in |
1948 |
|
-10 |
|
in |
1917 |
|
|
|
|
|
|
|
|
|
| Average Temperature |
|
34 |
|
37 |
|
32 |
|
+2 |
|
52 |
|
in |
1948 |
|
-3 |
|
in |
1917 |
|
|
|
|
|
|
|
|
|
| Precipitation |
|
.00 |
|
1.98 |
|
.13 |
|
-.13 |
|
1.98 |
|
in |
2019 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| One Hour |
|
.00 |
|
.32 |
|
|
|
|
|
.39 |
|
in |
2000 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Snow |
|
0.0 |
|
0.0 |
|
0.3 |
|
-0.3 |
|
5.8 |
|
in |
1993 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Snow
Depth |
|
0 |
|
0 |
|
|
|
|
|
15 |
|
in |
1947 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| HDD |
|
31 |
|
28 |
|
33 |
|
-2 |
|
68 |
|
in |
1917 |
|
13 |
|
in |
1948 |
|
|
|
|
|
|
|
|
|
| CDD |
|
0 |
|
0 |
|
0 |
|
+0 |
|
0 |
|
in |
|
0 |
|
in |
|
|
|
|
|
|
|
|
|
|
| Maximum Dew Point |
|
41 |
|
37 |
|
30 |
|
+11 |
|
53 |
|
in |
1984 |
|
-3 |
|
in |
1987 |
|
|
|
|
|
|
|
|
|
| Minimum
Dew Point |
|
10 |
|
34 |
|
14 |
|
-4 |
|
42 |
|
in |
1990 |
|
-16 |
|
in |
1962 |
|
|
|
|
|
|
|
|
|
| Average Dew Point |
|
26 |
|
36 |
|
22 |
|
+4 |
|
47 |
|
in |
1990 |
|
-7 |
|
in |
1987 |
|
|
|
|
|
|
|
|
|
| Maximum Humidity |
|
84% |
|
96% |
|
85% |
|
-1% |
|
100% |
|
in |
2005 |
|
38% |
|
in |
1949 |
|
|
|
|
|
|
|
|
|
| Minimum
Humidity |
|
42% |
|
89% |
|
53% |
|
-11% |
|
96% |
|
in |
1992 |
|
16% |
|
in |
1994 |
|
|
|
|
|
|
|
|
|
| Average Humidity |
|
63% |
|
93% |
|
69% |
|
-6% |
|
98% |
|
in |
1992 |
|
30% |
|
in |
1994 |
|
|
|
|
|
|
|
|
|
| Maximum Barometer |
|
30.50 |
|
30.07 |
|
30.15 |
|
+00.35 |
|
30.68 |
|
in |
2006 |
|
29.33 |
|
in |
1997 |
|
|
|
|
|
|
|
|
|
| Minimum
Barometer |
|
30.04 |
|
29.75 |
|
29.81 |
|
+00.23 |
|
30.40 |
|
in |
1972 |
|
28.89 |
|
in |
1997 |
|
|
|
|
|
|
|
|
|
| Average Barometer |
|
30.27 |
|
29.91 |
|
29.98 |
|
+00.29 |
|
30.50 |
|
in |
1978 |
|
29.11 |
|
in |
1997 |
|
|
|
|
|
|
|
|
|
| Average Wind |
|
8.0 |
|
12.0 |
|
8.6 |
|
-0.6 |
|
25.7 |
|
in |
1962 |
|
2.2 |
|
in |
2004 |
|
|
|
|
|
|
|
|
|
| Direction |
|
SW |
|
ENE |
|
NW |
|
|
|
NW |
|
|
|
|
N |
|
|
|
|
|
|
|
|
|
|
|
|
| High Wind Gust |
|
29 |
|
31 |
|
26 |
|
+3 |
|
70 |
|
in |
1962 |
|
11 |
|
in |
2004 |
|
|
|
|
|
|
|
|
|
| Direction |
|
SW |
|
E |
|
NW |
|
|
|
NW |
|
|
|
|
NNW |
|
|
|
|
|
|
|
|
|
|
|
|
| High Heat Index |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Wind Chill |
|
15 |
|
27 |
|
15 |
|
+0 |
|
|
|
|
|
|
-30 |
|
in |
1962 |
|
|
|
|
|
|
|
|
|
| Maximum Water Temp |
|
42.8 |
|
39.9 |
|
43.1 |
|
-0.3 |
|
48.9 |
|
in |
2006 |
|
37.8 |
|
in |
2017 |
|
|
|
|
|
|
|
|
|
| Minimum
Water Temp |
|
41.5 |
|
37.8 |
|
40.6 |
|
+0.9 |
|
46.3 |
|
in |
2015 |
|
33.6 |
|
in |
2017 |
|
|
|
|
|
|
|
|
|
| Average Water Temp |
|
42.2 |
|
38.9 |
|
41.9 |
|
+0.3 |
|
47.0 |
|
in |
2015 |
|
35.7 |
|
in |
2017 |
|
|
|
|
|
|
|
|
|
| Sunrise/ AM Twilight |
|
7:11:29 AM |
|
6:40:20 AM |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Sunset /
PM Twilight |
|
4:25:20 PM |
|
4:56:30 PM |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Length Of Day |
|
9:13:51 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Special Conditions |
|
None |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Comments |
|
|
|
|
|
|
|
|
|
|
|
| |
|
December
30, 2020 |
|
|
Record |
Record |
|
|
|
|
|
|
|
|
| Month-to-Date Summary |
|
Observed |
|
2019 |
|
Normal |
Depart |
Highest |
Lowest |
|
|
|
|
|
|
|
|
| Avg Maximum Temperature |
|
43.3 |
|
42.4 |
|
42.2 |
|
+1.1 |
|
54.1 |
|
in |
2015 |
|
30.3 |
|
in |
1989 |
|
|
|
|
|
|
|
|
|
| Avg
Minimum Temperature |
|
30.7 |
|
29.2 |
|
28.3 |
|
+2.4 |
|
41.5 |
|
in |
2015 |
|
14.3 |
|
in |
1989 |
|
|
|
|
|
|
|
|
|
| Average Temperature |
|
37.3 |
|
36.2 |
|
35.2 |
|
+2.0 |
|
48.1 |
|
in |
2015 |
|
22.5 |
|
in |
1989 |
|
|
|
|
|
|
|
|
|
| Total
Precipitation |
|
6.08 |
|
7.40 |
|
4.22 |
|
+1.86 |
|
9.45 |
|
in |
1936 |
|
.58 |
|
in |
1955 |
|
|
|
|
|
|
|
|
|
| Total Snow |
|
7.4 |
|
8.4 |
|
7.3 |
|
+0.1 |
|
22.3 |
|
in |
1904 |
|
T |
|
in |
2011 |
|
|
|
|
|
|
|
|
|
| Total
HDD |
|
832 |
|
865 |
|
886 |
|
-54 |
|
1276 |
|
in |
1989 |
|
507 |
|
in |
2015 |
|
|
|
|
|
|
|
|
|
| Total CDD |
|
0 |
|
0 |
|
0 |
|
+0 |
|
0 |
|
in |
|
|
|
|
in |
|
|
|
|
|
|
|
|
|
|
| Avg Maximum Dew Point |
|
37.1 |
|
35.8 |
|
34.1 |
|
+3.0 |
|
49.4 |
|
in |
2015 |
|
15.6 |
|
in |
1989 |
|
|
|
|
|
|
|
|
|
| Avg
Minimum Dew Point |
|
22.7 |
|
21.9 |
|
18.5 |
|
+4.2 |
|
36.1 |
|
in |
2015 |
|
-0.7 |
|
in |
1989 |
|
|
|
|
|
|
|
|
|
| Average Dew Point |
|
30.1 |
|
29.2 |
|
26.3 |
|
+3.8 |
|
43.0 |
|
in |
2015 |
|
7.4 |
|
in |
1989 |
|
|
|
|
|
|
|
|
|
| |
|
December 30, 2020 |
|
|
Record |
Record |
|
|
|
|
|
|
|
|
| Year-to-Date Summary |
|
Observed |
|
2019 |
|
Normal |
Depart |
Highest |
Lowest |
|
|
|
|
|
|
|
|
| Total Precipitation |
|
42.96 |
|
56.90 |
|
48.20 |
|
-5.24 |
|
65.49 |
|
in |
1983 |
|
27.66 |
|
in |
1965 |
|
|
|
|
|
|
|
|
|
| Total
Snow (since Jul 1 20) |
|
8.0 |
|
8.4 |
|
8.4 |
|
-0.4 |
|
23.7 |
|
in |
1904 |
|
T |
|
in |
1999 |
|
|
|
|
|
|
|
|
|
| Total HDD (since Jul 1
20) |
|
1625 |
|
1855 |
|
1918 |
|
-293 |
|
2448 |
|
in |
1904 |
|
1302 |
|
in |
2015 |
|
|
|
|
|
|
|
|
|
| Total
CDD (since Jan 1) |
|
871 |
|
731 |
|
563 |
|
+308 |
|
871 |
|
in |
2020 |
|
290 |
|
in |
1902 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Hour-by-Hour Weather For December 30, 2020 |
|
|
|
|
| Climate Weather for December 30 |
|
|
|
|
| Weather History For December 30 |
|
|
|
|
| Weather Calendar |
|
|
|
| Back To Weather Stat Page |
|
|
|
| Home |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|