| Portsmouth Rhode Island
Weather Almanac |
|
|
|
|
|
|
|
|
| Tuesday, August 18, 2020 |
|
|
|
|
|
|
|
|
| Cloudy, Rain and Thuderstorms early, Clear Day to Partly
Cloudy PM and Warmer |
|
|
|
|
|
|
|
|
| Climate
Normal Period |
|
Climate Record Period |
|
|
|
|
|
|
|
|
|
| 1981- 2010 |
|
1893 - 2020 |
|
|
|
|
|
|
|
|
|
| |
|
August
18, 2020 |
|
|
Record |
Record |
|
|
|
|
|
|
|
|
| Observed Daily Data |
|
Observed |
|
2019 |
|
Normal |
|
Depart |
|
Highest |
Lowest |
|
|
|
|
|
|
|
|
| Maximum Temperature |
|
82 |
|
83 |
|
78 |
|
+4 |
|
93 |
|
in |
1987 |
|
64 |
|
in |
1919 |
|
|
|
|
|
|
|
|
|
| Minimum
Temperature |
|
66 |
|
70 |
|
63 |
|
+3 |
|
74 |
|
in |
1965 |
|
52 |
|
in |
1979 |
|
|
|
|
|
|
|
|
|
| Average Temperature |
|
74 |
|
77 |
|
71 |
|
+3 |
|
82 |
|
in |
1987 |
|
60 |
|
in |
1979 |
|
|
|
|
|
|
|
|
|
| Precipitation |
|
.15 |
|
.00 |
|
.12 |
|
+.03 |
|
1.55 |
|
in |
1955 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| One
Hour |
|
.06 |
|
.00 |
|
|
|
|
|
.81 |
|
in |
1955 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Snow |
|
0.0 |
|
0.0 |
|
0.0 |
|
+0.0 |
|
0.0 |
|
in |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Snow Depth |
|
0 |
|
0 |
|
|
|
|
|
0 |
|
in |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| HDD |
|
0 |
|
0 |
|
0 |
|
+0 |
|
5 |
|
in |
1979 |
|
0 |
|
in |
2020 |
|
|
|
|
|
|
|
|
|
| CDD |
|
9 |
|
12 |
|
6 |
|
+3 |
|
17 |
|
in |
1987 |
|
0 |
|
in |
2000 |
|
|
|
|
|
|
|
|
|
| Maximum Dew Point |
|
69 |
|
75 |
|
66 |
|
+3 |
|
76 |
|
in |
1955 |
|
53 |
|
in |
1981 |
|
|
|
|
|
|
|
|
|
| Minimum
Dew Point |
|
61 |
|
69 |
|
58 |
|
+3 |
|
73 |
|
in |
1955 |
|
42 |
|
in |
1981 |
|
|
|
|
|
|
|
|
|
| Average Dew Point |
|
65 |
|
72 |
|
62 |
|
+3 |
|
75 |
|
in |
1955 |
|
48 |
|
in |
1981 |
|
|
|
|
|
|
|
|
|
| Maximum Humidity |
|
97% |
|
100% |
|
93% |
|
+4% |
|
100% |
|
in |
2019 |
|
73% |
|
in |
1954 |
|
|
|
|
|
|
|
|
|
| Minimum
Humidity |
|
51% |
|
74% |
|
57% |
|
-6% |
|
96% |
|
in |
1986 |
|
30% |
|
in |
1988 |
|
|
|
|
|
|
|
|
|
| Average Humidity |
|
74% |
|
87% |
|
75% |
|
-1% |
|
98% |
|
in |
1986 |
|
55% |
|
in |
1954 |
|
|
|
|
|
|
|
|
|
| Maximum Barometer |
|
29.88 |
|
30.05 |
|
30.04 |
|
-00.16 |
|
30.37 |
|
in |
1989 |
|
29.75 |
|
in |
1958 |
|
|
|
|
|
|
|
|
|
| Minimum
Barometer |
|
29.79 |
|
29.98 |
|
29.84 |
|
-00.05 |
|
30.20 |
|
in |
1961 |
|
29.45 |
|
in |
1988 |
|
|
|
|
|
|
|
|
|
| Average Barometer |
|
29.84 |
|
30.02 |
|
29.94 |
|
-00.10 |
|
30.28 |
|
in |
1961 |
|
29.66 |
|
in |
1958 |
|
|
|
|
|
|
|
|
|
| Average Wind |
|
5.8 |
|
5.2 |
|
5.6 |
|
+0.2 |
|
12.5 |
|
in |
1988 |
|
1.4 |
|
in |
1992 |
|
|
|
|
|
|
|
|
|
| Direction |
|
SW |
|
S |
|
WNW |
|
|
|
NNW |
|
|
|
|
WNW |
|
|
|
|
|
|
|
|
|
|
|
|
| High Wind Gust |
|
24 |
|
17 |
|
20 |
|
+4 |
|
33 |
|
in |
1991 |
|
9 |
|
in |
2010 |
|
|
|
|
|
|
|
|
|
| Direction |
|
SW |
|
SSE |
|
SW |
|
|
|
SW |
|
|
|
|
NNW |
|
|
|
|
|
|
|
|
|
|
|
|
| High
Heat Index |
|
84 |
|
88 |
|
80 |
|
+4 |
|
97 |
|
in |
2009 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Wind Chill |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#N/A |
|
in |
#N/A |
|
|
|
|
|
|
|
|
|
| Maximum Water Temp |
|
67.6 |
|
73.3 |
|
71.8 |
|
-4.2 |
|
75.4 |
|
in |
2012 |
|
67.6 |
|
in |
2020 |
|
|
|
|
|
|
|
|
|
| Minimum
Water Temp |
|
65.8 |
|
71.1 |
|
68.6 |
|
-2.8 |
|
73.4 |
|
in |
2018 |
|
64.0 |
|
in |
2008 |
|
|
|
|
|
|
|
|
|
| Average Water Temp |
|
66.7 |
|
72.2 |
|
70.2 |
|
-3.5 |
|
74.2 |
|
in |
2018 |
|
66.7 |
|
in |
2020 |
|
|
|
|
|
|
|
|
|
| Sunrise/ AM Twilight |
|
5:58:03 AM |
|
5:28:41 AM |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Sunset /
PM Twilight |
|
7:39:46 PM |
|
8:09:08 PM |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Length Of Day |
|
13:41:43 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Special Conditions |
|
Fog, Thunderstorm |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Comments |
|
|
|
|
|
|
|
|
|
|
|
| |
|
August
18, 2020 |
|
|
Record |
Record |
|
|
|
|
|
|
|
|
| Month-to-Date Summary |
|
Observed |
|
2019 |
|
Normal |
Depart |
Highest |
Lowest |
|
|
|
|
|
|
|
|
| Avg Maximum Temperature |
|
83.4 |
|
81.6 |
|
78.9 |
|
+4.6 |
|
85.1 |
|
in |
1944 |
|
72.3 |
|
in |
1964 |
|
|
|
|
|
|
|
|
|
| Avg
Minimum Temperature |
|
68.3 |
|
65.2 |
|
64.5 |
|
+3.8 |
|
71.3 |
|
in |
1988 |
|
55.8 |
|
in |
1964 |
|
|
|
|
|
|
|
|
|
| Average Temperature |
|
76.1 |
|
73.7 |
|
71.7 |
|
+4.4 |
|
78.1 |
|
in |
1988 |
|
64.4 |
|
in |
1964 |
|
|
|
|
|
|
|
|
|
| Total
Precipitation |
|
.95 |
|
.66 |
|
2.13 |
|
-1.18 |
|
8.35 |
|
in |
1992 |
|
.08 |
|
in |
1940 |
|
|
|
|
|
|
|
|
|
| Total Snow |
|
0.0 |
|
0.0 |
|
0.0 |
|
+0.0 |
|
0.0 |
|
in |
|
|
0.0 |
|
in |
|
|
|
|
|
|
|
|
|
|
| Total
HDD |
|
0 |
|
0 |
|
0 |
|
+0 |
|
24 |
|
in |
1964 |
|
0 |
|
in |
2020 |
|
|
|
|
|
|
|
|
|
| Total CDD |
|
199 |
|
156 |
|
130 |
|
+69 |
|
235 |
|
in |
1988 |
|
13 |
|
in |
1964 |
|
|
|
|
|
|
|
|
|
| Avg Maximum Dew Point |
|
71.9 |
|
68.7 |
|
67.9 |
|
+4.0 |
|
74.2 |
|
in |
2018 |
|
57.8 |
|
in |
1964 |
|
|
|
|
|
|
|
|
|
| Avg
Minimum Dew Point |
|
64.1 |
|
60.2 |
|
59.8 |
|
+4.3 |
|
68.0 |
|
in |
2018 |
|
47.3 |
|
in |
1964 |
|
|
|
|
|
|
|
|
|
| Average Dew Point |
|
68.0 |
|
64.4 |
|
63.8 |
|
+4.2 |
|
71.1 |
|
in |
2018 |
|
52.5 |
|
in |
1964 |
|
|
|
|
|
|
|
|
|
| |
|
August 18, 2020 |
|
|
Record |
Record |
|
|
|
|
|
|
|
|
| Year-to-Date Summary |
|
Observed |
|
2019 |
|
Normal |
Depart |
Highest |
Lowest |
|
|
|
|
|
|
|
|
| Total Precipitation |
|
23.33 |
|
35.89 |
|
29.94 |
|
-6.61 |
|
43.94 |
|
in |
1983 |
|
15.70 |
|
in |
1957 |
|
|
|
|
|
|
|
|
|
| Total
Snow (since Jul 1 20) |
|
0.0 |
|
0.0 |
|
0.0 |
|
+0.0 |
|
0.0 |
|
in |
|
|
0.0 |
|
in |
|
|
|
|
|
|
|
|
|
|
| Total HDD (since Jul 1
20) |
|
0 |
|
0 |
|
3 |
|
-3 |
|
24 |
|
in |
1964 |
|
0 |
|
in |
2020 |
|
|
|
|
|
|
|
|
|
| Total
CDD (since Jan 1) |
|
663 |
|
576 |
|
434 |
|
+229 |
|
663 |
|
in |
2020 |
|
208 |
|
in |
1902 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Hour-by-Hour Weather For August 18, 2020 |
|
|
|
|
| Climate Weather for August 18 |
|
|
|
|
| Weather History For August 18 |
|
|
|
|
| Weather Calendar |
|
|
|
| Back To Weather Stat Page |
|
|
|
| Home |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|