Average temperature over 47 years |
°F |
34 |
15 |
15 |
21 |
32 |
43 |
51 |
55 |
53 |
48 |
33 |
23 |
15 |
Average high temperature over 47 years |
°F |
42 |
21 |
23 |
30 |
39 |
51 |
59 |
62 |
62 |
55 |
41 |
30 |
23 |
Average low temperature over 47 years |
°F |
26 |
6 |
6 |
14 |
24 |
34 |
42 |
46 |
46 |
39 |
26 |
15 |
6 |
Highest recorded temperature over 47 years |
°F |
87 |
53 |
57 |
53 |
64 |
78 |
87 |
86 |
84 |
73 |
66 |
55 |
48 |
Lowest recorded temperature over 47 years |
°F |
-47 |
-47 |
-41 |
-41 |
-18 |
5 |
28 |
33 |
24 |
15 |
-11 |
-27 |
-36 |
Average number of rainy days over 48 years |
days |
153 |
11 |
10 |
11 |
10 |
12 |
13 |
15 |
17 |
16 |
13 |
12 |
12 |
Average precipitation over 47 years |
in |
19.7 |
1.1 |
0.8 |
1.1 |
1.0 |
1.3 |
1.6 |
2.2 |
3.1 |
2.9 |
2.0 |
1.5 |
1.3 |
Average dew point over 26 years |
°F |
28 |
10 |
8 |
15 |
24 |
34 |
42 |
48 |
48 |
41 |
28 |
19 |
10 |
Average number of days above 70°F over 47 years |
days |
13 |
- |
- |
- |
- |
1 |
3 |
6 |
4 |
- |
- |
- |
- |
Most recorded rainfall over 47 years |
in |
26.9 |
3.0 |
2.8 |
2.4 |
3.0 |
2.9 |
3.8 |
5.1 |
6.4 |
7.3 |
3.3 |
3.3 |
3.6 |
Least recorded rainfall over 47 years |
in |
9.8 |
0.2 |
0.1 |
- |
0.2 |
0.2 |
0.3 |
0.3 |
1.0 |
0.9 |
0.2 |
- |
0.1 |
Average number of days with thunderstorms over 47 years |
days |
3 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Average number of days with fog over 47 years |
days |
136 |
9 |
7 |
8 |
9 |
9 |
12 |
18 |
19 |
12 |
10 |
12 |
11 |
Average morning relative humidity over 26 years |
% |
85 |
81 |
80 |
81 |
84 |
85 |
87 |
92 |
92 |
90 |
87 |
84 |
81 |
Average evening relative humidity over 26 years |
% |
69 |
79 |
73 |
69 |
64 |
58 |
59 |
65 |
69 |
67 |
71 |
78 |
79 |
Average wind speed over 26 years |
mph |
11.0 |
12.0 |
12.0 |
11.0 |
11.0 |
16.0 |
11.0 |
10.0 |
10.0 |
12.0 |
11.0 |
11.0 |
11.0 |
Average number of days above 60°F over 47 years |
days |
63 |
- |
- |
- |
- |
4 |
14 |
21 |
18 |
5 |
- |
- |
- |
Average number of days below 32°F over 47 years |
days |
200 |
28 |
26 |
28 |
25 |
11 |
- |
- |
- |
5 |
21 |
26 |
29 |
Average number of days below 0°F over 47 years |
days |
49 |
12 |
11 |
7 |
1 |
- |
- |
- |
- |
- |
1 |
6 |
12 |
Average snowfall over 44 years |
in |
46.3 |
8.3 |
6.8 |
7.4 |
4.5 |
0.9 |
- |
- |
- |
- |
3.0 |
6.3 |
9.1 |
Average number of clear days over 38 years |
days |
50 |
8 |
7 |
7 |
4 |
3 |
1 |
1 |
1 |
2 |
4 |
6 |
6 |
Average snow cover over 44 years |
in |
1.0 |
3.0 |
3.0 |
3.0 |
1.0 |
- |
- |
- |
- |
- |
- |
1.0 |
2.0 |
Heating degree days over 30 years |
days |
11456 |
1553 |
1406 |
1321 |
1014 |
701 |
450 |
319 |
344 |
534 |
1011 |
1281 |
1522 |
Cooling degree days over 30 years |
days |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Average number of cloudy days over 38 years |
days |
248 |
18 |
16 |
18 |
20 |
22 |
24 |
25 |
25 |
22 |
20 |
19 |
19 |
Average number of partly cloudy days over 38 years |
days |
67 |
5 |
5 |
6 |
6 |
6 |
5 |
5 |
5 |
6 |
7 |
5 |
6 |