| Portsmouth Rhode Island Weather Almanac |
|
|
|
|
|
|
|
|
|
| Sunday, August
29, 2021 |
|
|
|
|
|
|
|
|
|
| Cloudy,
Moderate Rain early to Partly Cloudy PM, Light Winds and Cooler |
|
|
|
|
|
|
|
|
|
| |
|
Climate
Normal Period |
Climate Record Period |
|
|
|
|
|
|
|
|
| |
|
1991 -
2020 |
1893 - 2021 |
|
|
|
|
|
|
|
|
| |
|
August 29, 2021 |
|
Record |
|
Record |
|
|
|
|
|
|
|
|
|
| Observed Daily Data |
|
2021 |
|
2020 |
|
Norm |
|
Depart |
|
Highest |
|
Lowest |
|
|
|
|
|
|
|
|
|
| Maximum Temperature |
|
74 |
|
77 |
|
77 |
|
-3 |
|
93 |
|
in |
1953 |
|
63 |
|
in |
2006 |
|
|
|
|
|
|
|
|
|
| Minimum
Temperature |
|
60 |
|
69 |
|
62 |
|
-2 |
|
73 |
|
in |
2018 |
|
46 |
|
in |
1982 |
|
|
|
|
|
|
|
|
|
| Average Temperature |
|
67 |
|
73 |
|
70 |
|
-3 |
|
83 |
|
in |
1948 |
|
57 |
|
in |
1986 |
|
|
|
|
|
|
|
|
|
| Month Avg Max Temperature |
|
81.4 |
|
83.0 |
|
78.7 |
|
+2.7 |
|
83.0 |
|
in |
2016 |
|
73.5 |
|
in |
1964 |
|
|
|
|
|
|
|
|
|
| Month Avg
Min Temperature |
|
66.8 |
|
67.1 |
|
63.9 |
|
+3.0 |
|
68.1 |
|
in |
2018 |
|
56.9 |
|
in |
1964 |
|
|
|
|
|
|
|
|
|
| Month Average Temperature |
|
74.4 |
|
75.2 |
|
71.3 |
|
+3.1 |
|
75.3 |
|
in |
2018 |
|
65.6 |
|
in |
1964 |
|
|
|
|
|
|
|
|
|
| High Heat
Index |
|
77 |
|
81 |
|
78 |
|
-1 |
|
103 |
|
in |
2018 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Low Wind Chill |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#N/A |
|
in |
#N/A |
|
|
|
|
|
|
|
|
|
| HDD |
|
0 |
|
0 |
|
1 |
|
-1 |
|
8 |
|
in |
1986 |
|
0 |
|
in |
|
|
|
|
|
|
|
|
|
|
| Month HDD |
|
0 |
|
0 |
|
2 |
|
-2 |
|
36 |
|
in |
1905 |
|
0 |
|
in |
2021 |
|
|
|
|
|
|
|
|
|
| Season HDD |
|
9 |
|
0 |
|
5 |
|
+4 |
|
40 |
|
in |
1914 |
|
0 |
|
in |
2020 |
|
|
|
|
|
|
|
|
|
| CDD |
|
2 |
|
8 |
|
6 |
|
-4 |
|
18 |
|
in |
1948 |
|
0 |
|
in |
2017 |
|
|
|
|
|
|
|
|
|
| Month CDD |
|
272 |
|
297 |
|
199 |
|
+73 |
|
300 |
|
in |
2018 |
|
43 |
|
in |
1964 |
|
|
|
|
|
|
|
|
|
| Year CDD |
|
662 |
|
761 |
|
527 |
|
+135 |
|
761 |
|
in |
2020 |
|
241 |
|
in |
1902 |
|
|
|
|
|
|
|
|
|
| Maximum Dew Point |
|
68 |
|
74 |
|
66 |
|
+2 |
|
78 |
|
in |
2018 |
|
44 |
|
in |
1965 |
|
|
|
|
|
|
|
|
|
| Minimum Dew
Point |
|
56 |
|
67 |
|
58 |
|
-2 |
|
72 |
|
in |
2018 |
|
35 |
|
in |
1982 |
|
|
|
|
|
|
|
|
|
| Average Dew Point |
|
62 |
|
71 |
|
62 |
|
+0 |
|
75 |
|
in |
2018 |
|
40 |
|
in |
1965 |
|
|
|
|
|
|
|
|
|
| Month Avg Max Dew Point |
|
72.4 |
|
70.8 |
|
68.0 |
|
+4.4 |
|
72.4 |
|
in |
2021 |
|
60.1 |
|
in |
1964 |
|
|
|
|
|
|
|
|
|
| Month Avg
Min Dew Point |
|
64.0 |
|
62.2 |
|
59.8 |
|
+4.2 |
|
65.2 |
|
in |
2018 |
|
49.8 |
|
in |
1964 |
|
|
|
|
|
|
|
|
|
| Month Average Dew Point |
|
68.2 |
|
66.5 |
|
63.9 |
|
+4.3 |
|
68.8 |
|
in |
2018 |
|
54.9 |
|
in |
1964 |
|
|
|
|
|
|
|
|
|
| Precipitation |
|
.24 |
|
.08 |
|
.11 |
|
+.13 |
|
3.97 |
|
in |
1997 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| One Hour |
|
.08 |
|
.04 |
|
|
|
|
|
2.44 |
|
in |
1997 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Hourly Rate |
|
1.15 |
|
.24 |
|
|
|
|
|
3.47 |
|
in |
2005 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Month Precipitation |
|
6.27 |
|
1.65 |
|
3.41 |
|
+2.86 |
|
11.69 |
|
in |
1946 |
|
.33 |
|
in |
1993 |
|
|
|
|
|
|
|
|
|
| Year Precipitation |
|
29.10 |
|
24.03 |
|
29.06 |
|
+.04 |
|
45.24 |
|
in |
1998 |
|
16.49 |
|
in |
1957 |
|
|
|
|
|
|
|
|
|
| Snow |
|
#N/A |
|
#N/A |
|
#N/A |
|
#N/A |
|
#N/A |
|
in |
#N/A |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Snow Depth |
|
#N/A |
|
#N/A |
|
|
|
|
|
#N/A |
|
in |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Month Snow |
|
#N/A |
|
#N/A |
|
#N/A |
|
#N/A |
|
#N/A |
|
in |
#N/A |
|
#N/A |
|
in |
|
|
|
|
|
|
|
|
|
|
| Season Snow |
|
#N/A |
|
#N/A |
|
#N/A |
|
#N/A |
|
#N/A |
|
in |
#N/A |
|
#N/A |
|
in |
#N/A |
|
|
|
|
|
|
|
|
|
| |
|
August
29, 2021 |
|
|
Record |
Record |
|
|
|
|
|
|
|
|
| Observed Daily Data |
|
2021 |
|
2020 |
|
Norm |
|
Depart |
|
Highest |
Lowest |
|
|
|
|
|
|
|
|
| Maximum Humidity |
|
97% |
|
96% |
|
93% |
|
+4% |
|
100% |
|
in |
2017 |
|
70% |
|
in |
1965 |
|
|
|
|
|
|
|
|
|
| Minimum
Humidity |
|
74% |
|
89% |
|
60% |
|
+14% |
|
91% |
|
in |
1987 |
|
35% |
|
in |
1982 |
|
|
|
|
|
|
|
|
|
| Average Humidity |
|
86% |
|
93% |
|
77% |
|
+9% |
|
96% |
|
in |
1987 |
|
54% |
|
in |
1982 |
|
|
|
|
|
|
|
|
|
| Maximum Barometer |
|
30.29 |
|
29.80 |
|
30.07 |
|
+00.22 |
|
30.37 |
|
in |
1941 |
|
29.73 |
|
in |
1962 |
|
|
|
|
|
|
|
|
|
| Minimum
Barometer |
|
30.07 |
|
29.44 |
|
29.86 |
|
+00.21 |
|
30.23 |
|
in |
2000 |
|
29.43 |
|
in |
1990 |
|
|
|
|
|
|
|
|
|
| Average Barometer |
|
30.18 |
|
29.62 |
|
29.97 |
|
+00.21 |
|
30.27 |
|
in |
2000 |
|
29.62 |
|
in |
2020 |
|
|
|
|
|
|
|
|
|
| Average Wind |
|
3.0 |
|
6.8 |
|
6.1 |
|
-3.1 |
|
17.3 |
|
in |
1962 |
|
1.3 |
|
in |
1964 |
|
|
|
|
|
|
|
|
|
| Direction |
|
SSE |
|
S |
|
S |
|
|
|
NNE |
|
|
|
|
S |
|
|
|
|
|
|
|
|
|
|
|
|
| High Wind Gust |
|
10 |
|
27 |
|
22 |
|
-12 |
|
42 |
|
in |
1962 |
|
10 |
|
in |
2021 |
|
|
|
|
|
|
|
|
|
| Direction |
|
SSW |
|
S |
|
S |
|
|
|
NNE |
|
|
|
|
SSW |
|
|
|
|
|
|
|
|
|
|
|
|
| Maximum Water Temp |
|
73.4 |
|
64.8 |
|
70.4 |
|
+3.0 |
|
74.4 |
|
in |
2018 |
|
64.8 |
|
in |
2020 |
|
|
|
|
|
|
|
|
|
| Minimum
Water Temp |
|
72.5 |
|
63.7 |
|
68.2 |
|
+4.3 |
|
72.5 |
|
in |
2021 |
|
62.9 |
|
in |
2003 |
|
|
|
|
|
|
|
|
|
| Average Water Temp |
|
73.0 |
|
64.3 |
|
69.4 |
|
+3.6 |
|
73.8 |
|
in |
2021 |
|
64.3 |
|
in |
2020 |
|
|
|
|
|
|
|
|
|
| Sunrise/ AM Twilight |
|
6:09:31 AM |
|
5:41:01 AM |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Sunset / PM
Twilight |
|
7:22:10 PM |
|
7:50:40 PM |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Length Of Day |
|
13:12:39 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Special Conditions |
|
Fog |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Comments |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Hour-by-Hour Weather For August 29, 2021 |
|
|
|
|
|
|
|
|
|
| Climate Weather for August 29 |
|
|
|
|
|
|
|
|
|
| Weather History For August 29 |
|
|
|
|
|
|
|
|
|
| Weather Calendar |
|
|
|
|
|
|
|
|
|
| Back
To Weather Stat Page |
|
|
|
|
|
|
|
|
|
| Home |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|