| Portsmouth Rhode Island
Weather Almanac |
|
|
|
|
|
|
|
|
| Monday, September 30, 2019 |
|
|
|
|
|
|
|
|
| Partly Cloudy with Seasonal Temperatures |
|
|
|
|
|
|
|
|
| Climate
Normal Period |
|
Climate Record Period |
|
|
|
|
|
|
|
|
|
| 1981- 2010 |
|
1893 - 2019 |
|
|
|
|
|
|
|
|
|
| |
|
September
30, 2019 |
|
|
Record |
Record |
|
|
|
|
|
|
|
|
| Observed Daily Data |
|
Observed |
|
2018 |
|
Normal |
|
Depart |
|
Highest |
Lowest |
|
|
|
|
|
|
|
|
| Maximum Temperature |
|
67 |
|
68 |
|
68 |
|
-1 |
|
81 |
|
in |
1922 |
|
51 |
|
in |
1992 |
|
|
|
|
|
|
|
|
|
| Minimum
Temperature |
|
53 |
|
51 |
|
52 |
|
+1 |
|
66 |
|
in |
2010 |
|
35 |
|
in |
1951 |
|
|
|
|
|
|
|
|
|
| Average Temperature |
|
60 |
|
60 |
|
60 |
|
+0 |
|
72 |
|
in |
1959 |
|
45 |
|
in |
1992 |
|
|
|
|
|
|
|
|
|
| Precipitation |
|
.00 |
|
.00 |
|
.12 |
|
-.12 |
|
1.84 |
|
in |
2015 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| One
Hour |
|
.00 |
|
.00 |
|
|
|
|
|
.84 |
|
in |
2015 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Snow |
|
0.0 |
|
0.0 |
|
0.0 |
|
+0.0 |
|
0.0 |
|
in |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Snow Depth |
|
0 |
|
0 |
|
|
|
|
|
|
|
in |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| HDD |
|
5 |
|
5 |
|
6 |
|
-1 |
|
20 |
|
in |
1992 |
|
0 |
|
in |
2015 |
|
|
|
|
|
|
|
|
|
| CDD |
|
0 |
|
0 |
|
1 |
|
-1 |
|
7 |
|
in |
1959 |
|
0 |
|
in |
2019 |
|
|
|
|
|
|
|
|
|
| Maximum Dew Point |
|
52 |
|
54 |
|
57 |
|
-5 |
|
72 |
|
in |
2015 |
|
31 |
|
in |
1981 |
|
|
|
|
|
|
|
|
|
| Minimum
Dew Point |
|
45 |
|
48 |
|
47 |
|
-2 |
|
65 |
|
in |
2010 |
|
20 |
|
in |
1981 |
|
|
|
|
|
|
|
|
|
| Average Dew Point |
|
49 |
|
51 |
|
52 |
|
-3 |
|
68 |
|
in |
2010 |
|
26 |
|
in |
1981 |
|
|
|
|
|
|
|
|
|
| Maximum Humidity |
|
87% |
|
89% |
|
93% |
|
-6% |
|
100% |
|
in |
2010 |
|
67% |
|
in |
1981 |
|
|
|
|
|
|
|
|
|
| Minimum
Humidity |
|
52% |
|
52% |
|
58% |
|
-6% |
|
93% |
|
in |
2014 |
|
25% |
|
in |
1981 |
|
|
|
|
|
|
|
|
|
| Average Humidity |
|
70% |
|
71% |
|
75% |
|
-6% |
|
95% |
|
in |
2014 |
|
46% |
|
in |
1981 |
|
|
|
|
|
|
|
|
|
| Maximum Barometer |
|
30.37 |
|
30.37 |
|
30.13 |
|
+00.24 |
|
30.59 |
|
in |
1945 |
|
29.53 |
|
in |
1997 |
|
|
|
|
|
|
|
|
|
| Minimum
Barometer |
|
30.25 |
|
30.25 |
|
29.91 |
|
+00.34 |
|
30.38 |
|
in |
2007 |
|
29.29 |
|
in |
1972 |
|
|
|
|
|
|
|
|
|
| Average Barometer |
|
30.31 |
|
30.31 |
|
30.02 |
|
+00.29 |
|
30.46 |
|
in |
2007 |
|
29.43 |
|
in |
1997 |
|
|
|
|
|
|
|
|
|
| Average Wind |
|
6.5 |
|
4.1 |
|
6.6 |
|
-0.1 |
|
18.7 |
|
in |
2001 |
|
2.5 |
|
in |
2008 |
|
|
|
|
|
|
|
|
|
| Direction |
|
N |
|
SW |
|
SW |
|
|
|
NNE |
|
|
|
|
SE |
|
|
|
|
|
|
|
|
|
|
|
|
| High Wind Gust |
|
19 |
|
16 |
|
22 |
|
-3 |
|
41 |
|
in |
1943 |
|
11 |
|
in |
1970 |
|
|
|
|
|
|
|
|
|
| Direction |
|
NNE |
|
SW |
|
SW |
|
|
|
E |
|
|
|
|
WNW |
|
|
|
|
|
|
|
|
|
|
|
|
| High
Heat Index |
|
66 |
|
68 |
|
67 |
|
-1 |
|
81 |
|
in |
1952 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Wind Chill |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Maximum Water Temp |
|
67.2 |
|
65.9 |
|
65.6 |
|
+1.6 |
|
68.5 |
|
in |
2015 |
|
62.0 |
|
in |
2010 |
|
|
|
|
|
|
|
|
|
| Minimum
Water Temp |
|
65.8 |
|
64.2 |
|
64.0 |
|
+1.8 |
|
67.5 |
|
in |
2015 |
|
60.3 |
|
in |
2001 |
|
|
|
|
|
|
|
|
|
| Average Water Temp |
|
66.5 |
|
65.1 |
|
64.9 |
|
+1.6 |
|
68.0 |
|
in |
2015 |
|
61.3 |
|
in |
2001 |
|
|
|
|
|
|
|
|
|
| Sunrise/ AM Twilight |
|
6:41:51 AM |
|
6:14:20 AM |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Sunset /
PM Twilight |
|
6:28:04 PM |
|
6:55:35 PM |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Length Of Day |
|
11:46:13 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Special Conditions |
|
None |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Comments |
|
|
|
|
|
|
|
|
|
|
|
| |
|
September
30, 2019 |
|
|
Record |
Record |
|
|
|
|
|
|
|
|
| Month-to-Date Summary |
|
Observed |
|
2018 |
|
Normal |
Depart |
Highest |
Lowest |
|
|
|
|
|
|
|
|
| Avg Maximum Temperature |
|
74.6 |
|
73.0 |
|
71.8 |
|
+2.8 |
|
77.8 |
|
in |
1961 |
|
67.6 |
|
in |
1963 |
|
|
|
|
|
|
|
|
|
| Avg
Minimum Temperature |
|
56.7 |
|
60.6 |
|
56.4 |
|
+0.3 |
|
62.2 |
|
in |
1961 |
|
51.7 |
|
in |
1956 |
|
|
|
|
|
|
|
|
|
| Average Temperature |
|
65.6 |
|
66.8 |
|
64.1 |
|
+1.5 |
|
70.0 |
|
in |
1961 |
|
60.0 |
|
in |
1963 |
|
|
|
|
|
|
|
|
|
| Total
Precipitation |
|
1.57 |
|
6.49 |
|
3.89 |
|
-2.32 |
|
10.67 |
|
in |
1961 |
|
.31 |
|
in |
1959 |
|
|
|
|
|
|
|
|
|
| Total Snow |
|
0.0 |
|
0.0 |
|
0.0 |
|
+0.0 |
|
0.0 |
|
in |
|
|
0.0 |
|
in |
|
|
|
|
|
|
|
|
|
|
| Total
HDD |
|
40 |
|
48 |
|
80 |
|
-40 |
|
181 |
|
in |
1956 |
|
12 |
|
in |
1921 |
|
|
|
|
|
|
|
|
|
| Total CDD |
|
65 |
|
110 |
|
60 |
|
+5 |
|
186 |
|
in |
1961 |
|
7 |
|
in |
1893 |
|
|
|
|
|
|
|
|
|
| Avg Maximum Dew Point |
|
63.0 |
|
62.7 |
|
60.1 |
|
+2.9 |
|
66.1 |
|
in |
2015 |
|
54.6 |
|
in |
1984 |
|
|
|
|
|
|
|
|
|
| Avg
Minimum Dew Point |
|
52.5 |
|
51.4 |
|
51.0 |
|
+1.6 |
|
57.0 |
|
in |
2011 |
|
44.1 |
|
in |
1984 |
|
|
|
|
|
|
|
|
|
| Average Dew Point |
|
57.8 |
|
57.3 |
|
55.5 |
|
+2.2 |
|
61.4 |
|
in |
2011 |
|
49.4 |
|
in |
1984 |
|
|
|
|
|
|
|
|
|
| |
|
September 30, 2019 |
|
|
Record |
Record |
|
|
|
|
|
|
|
|
| Year-to-Date Summary |
|
Observed |
|
2018 |
|
Normal |
Depart |
Highest |
Lowest |
|
|
|
|
|
|
|
|
| Total Precipitation |
|
39.40 |
|
35.33 |
|
35.38 |
|
+4.02 |
|
48.49 |
|
in |
1998 |
|
17.64 |
|
in |
1957 |
|
|
|
|
|
|
|
|
|
| Total
Snow (since Jul 1 19) |
|
0.0 |
|
0.0 |
|
0.0 |
|
+0.0 |
|
0.0 |
|
in |
|
|
0.0 |
|
in |
|
|
|
|
|
|
|
|
|
|
| Total HDD (since Jul 1
19) |
|
43 |
|
48 |
|
89 |
|
-46 |
|
212 |
|
in |
1956 |
|
19 |
|
in |
1921 |
|
|
|
|
|
|
|
|
|
| Total
CDD (since Jan 1) |
|
723 |
|
758 |
|
558 |
|
+165 |
|
797 |
|
in |
2016 |
|
288 |
|
in |
1902 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Hour-by-Hour Weather For September 30, 2019 |
|
|
|
| Climate Weather for September 30 |
|
|
|
| Weather History For September 30 |
|
|
|
| Weather Calendar |
|
|
|
| Back To Weather Stat Page |
|
|
|
| Home |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|