Average temperature over 30 years |
°F |
49 |
24 |
26 |
37 |
48 |
58 |
67 |
72 |
70 |
63 |
52 |
41 |
29 |
Average high temperature over 30 years |
°F |
58 |
32 |
35 |
46 |
58 |
69 |
78 |
82 |
80 |
73 |
62 |
49 |
36 |
Average low temperature over 30 years |
°F |
40 |
16 |
18 |
28 |
38 |
48 |
57 |
62 |
60 |
53 |
43 |
33 |
22 |
Highest recorded temperature over 49 years |
°F |
100 |
69 |
66 |
82 |
86 |
91 |
100 |
100 |
96 |
96 |
84 |
78 |
73 |
Lowest recorded temperature over 49 years |
°F |
-22 |
-22 |
-11 |
-5 |
8 |
24 |
37 |
43 |
39 |
33 |
19 |
1 |
-16 |
Average number of rainy days over 34 years |
days |
143 |
13 |
12 |
15 |
14 |
13 |
11 |
10 |
10 |
9 |
10 |
13 |
14 |
Average number of days above 90°F over 30 years |
days |
6.2 |
- |
- |
- |
- |
0.1 |
1.2 |
2.7 |
1.6 |
0.7 |
- |
- |
- |
Average precipitation over 30 years |
in |
39.7 |
2.0 |
2.0 |
3.3 |
3.6 |
4.4 |
4.0 |
4.0 |
4.1 |
3.4 |
2.3 |
3.5 |
3.1 |
Average dew point over 32 years |
°F |
39 |
19 |
21 |
28 |
37 |
46 |
57 |
62 |
60 |
53 |
42 |
33 |
24 |
Most recorded rainfall over 42 years |
in |
67.2 |
11.5 |
5.4 |
7.0 |
7.0 |
8.8 |
10.0 |
13.2 |
8.6 |
7.8 |
6.4 |
12.8 |
11.2 |
Least recorded rainfall over 42 years |
in |
21.8 |
0.4 |
0.3 |
1.2 |
0.8 |
1.1 |
0.6 |
0.9 |
0.6 |
0.7 |
0.4 |
0.7 |
0.7 |
Average number of days with thunderstorms over 40 years |
days |
34 |
- |
- |
2 |
3 |
5 |
6 |
7 |
6 |
3 |
1 |
1 |
- |
Average number of days with fog over 40 years |
days |
166 |
13 |
12 |
14 |
13 |
14 |
13 |
14 |
17 |
15 |
13 |
13 |
15 |
Average morning relative humidity over 42 years |
% |
82 |
82 |
81 |
81 |
78 |
78 |
81 |
83 |
87 |
87 |
83 |
82 |
83 |
Average evening relative humidity over 39 years |
% |
62 |
72 |
69 |
64 |
56 |
55 |
56 |
56 |
57 |
58 |
56 |
67 |
74 |
Average wind speed over 32 years |
mph |
12.0 |
14.0 |
13.0 |
14.0 |
13.0 |
12.0 |
11.0 |
10.0 |
10.0 |
9.0 |
10.0 |
13.0 |
13.0 |
Average number of days below 32°F over 30 years |
days |
118 |
26 |
23 |
20 |
8.4 |
0.7 |
- |
- |
- |
- |
3.3 |
14 |
24 |
Average number of days below 0°F over 30 years |
days |
5.9 |
2.7 |
1.9 |
0.2 |
- |
- |
- |
- |
- |
- |
- |
- |
1.1 |
Average snowfall over 30 years |
in |
42.5 |
11.6 |
10.3 |
6.8 |
2.0 |
0.1 |
- |
- |
- |
- |
0.1 |
2.4 |
9.3 |
Average number of days above 65°F over 42 years |
days |
166 |
- |
- |
3 |
10 |
21 |
29 |
31 |
31 |
25 |
14 |
3 |
- |
Average number of clear days over 30 years |
days |
73 |
4 |
4 |
5 |
6 |
7 |
7 |
8 |
9 |
9 |
9 |
4 |
3 |
Most rain reported in a day over 49 years |
in |
3.9 |
2.7 |
2.8 |
2.4 |
2.7 |
2.6 |
3.7 |
3.4 |
3.9 |
2.3 |
3.3 |
3.1 |
2.6 |
Most rain reported in a month over 49 years |
in |
67.2 |
11.5 |
5.4 |
7.0 |
8.7 |
8.8 |
10.0 |
13.2 |
8.7 |
7.8 |
6.5 |
12.8 |
11.2 |
Least rain reported in a month over 49 years |
in |
21.8 |
0.4 |
0.3 |
1.2 |
0.8 |
1.1 |
0.6 |
0.9 |
0.6 |
0.7 |
0.4 |
0.7 |
0.3 |
Heating degree days over 30 years |
days |
6335 |
1264 |
1077 |
853 |
509 |
232 |
53 |
9 |
20 |
119 |
395 |
706 |
1098 |
Cooling degree days over 30 years |
days |
676 |
- |
- |
1 |
7 |
38 |
134 |
224 |
182 |
81 |
9 |
- |
- |
Average number of cloudy days over 30 years |
days |
191 |
21 |
18 |
19 |
16 |
15 |
11 |
10 |
11 |
12 |
14 |
20 |
23 |
Average number of partly cloudy days over 30 years |
days |
101 |
6 |
6 |
7 |
8 |
9 |
12 |
13 |
11 |
9 |
8 |
6 |
5 |
Most snow reported in a month over 49 years |
in |
62.8 |
43.9 |
19.1 |
17.1 |
13.4 |
1.4 |
- |
- |
- |
- |
10.3 |
14.5 |
29.0 |