Weather Averages for Capitol Hill, WA
7-day Forecast / 10-day Forecast
| Monday |
|
High: 48°F Low: 35°F |
Overcast |
|
| Tuesday |
|
High: 42°F Low: 38°F |
Partly Cloudy |
|
| Wednesday |
|
High: 46°F Low: 33°F |
Sunny |
|
| Thursday |
|
High: 51°F Low: 32°F |
Cloudy |
|
| Friday |
|
High: 55°F Low: 32°F |
Sunny |
|
Average temperature over 92 years |
°F |
53 |
41 |
44 |
46 |
51 |
57 |
60 |
64 |
64 |
60 |
53 |
46 |
43 |
Average high temperature over 92 years |
°F |
59 |
44 |
48 |
53 |
57 |
64 |
69 |
73 |
73 |
68 |
60 |
51 |
46 |
Average low temperature over 92 years |
°F |
46 |
36 |
37 |
39 |
43 |
48 |
53 |
55 |
55 |
53 |
48 |
42 |
37 |
Highest recorded temperature over 92 years |
°F |
100 |
66 |
69 |
75 |
87 |
91 |
100 |
100 |
96 |
91 |
82 |
73 |
64 |
Lowest recorded temperature over 92 years |
°F |
- |
- |
1 |
21 |
30 |
35 |
39 |
44 |
46 |
36 |
19 |
- |
8 |
Average number of rainy days over 43 years |
days |
150 |
18 |
16 |
17 |
14 |
11 |
9 |
5 |
6 |
8 |
11 |
18 |
18 |
Average number of days above 90°F over 92 years |
days |
1 |
- |
- |
- |
- |
- |
- |
1 |
- |
- |
- |
- |
- |
Average precipitation over 92 years |
in |
34.0 |
5.1 |
3.7 |
3.3 |
2.2 |
1.7 |
1.4 |
0.7 |
0.9 |
1.6 |
3.0 |
5.1 |
5.4 |
Most recorded rainfall over 92 years |
in |
48.1 |
10.9 |
8.1 |
7.2 |
5.3 |
4.7 |
3.7 |
2.2 |
5.5 |
5.6 |
8.0 |
11.2 |
15.3 |
Least recorded rainfall over 92 years |
in |
19.5 |
0.6 |
0.3 |
0.4 |
0.2 |
0.3 |
- |
- |
- |
- |
0.2 |
0.5 |
1.0 |
Average number of days with thunderstorms over 25 years |
days |
1 |
- |
- |
- |
- |
- |
- |
- |
1 |
- |
- |
- |
- |
Average number of days with fog over 25 years |
days |
26 |
3 |
2 |
1 |
1 |
1 |
1 |
1 |
3 |
4 |
3 |
3 |
3 |
Average snowfall over 43 years |
in |
7.1 |
3.0 |
0.9 |
0.6 |
- |
- |
- |
- |
- |
- |
- |
0.7 |
1.9 |
Average number of clear days over 24 years |
days |
71 |
3 |
3 |
4 |
5 |
7 |
7 |
12 |
10 |
9 |
5 |
3 |
3 |
Average snow cover over 27 years |
in |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Heating degree days over 30 years |
days |
4611 |
735 |
580 |
570 |
438 |
276 |
123 |
44 |
58 |
144 |
357 |
561 |
725 |
Cooling degree days over 30 years |
days |
167 |
- |
- |
- |
- |
- |
15 |
54 |
80 |
18 |
- |
- |
- |
Average possibility of sunshine over 31 years |
% |
43 |
28 |
34 |
42 |
47 |
52 |
49 |
63 |
56 |
53 |
37 |
28 |
23 |
Average number of cloudy days over 24 years |
days |
201 |
23 |
19 |
19 |
16 |
14 |
15 |
9 |
11 |
13 |
18 |
21 |
23 |
Average number of partly cloudy days over 24 years |
days |
93 |
5 |
6 |
8 |
9 |
10 |
8 |
10 |
10 |
8 |
8 |
6 |
5 |
Average number of days below 45°F over 92 years |
days |
172 |
29 |
26 |
28 |
21 |
8 |
1 |
- |
- |
1 |
10 |
22 |
28 |
Average number of days above 75°F over 92 years |
days |
43 |
- |
- |
- |
1 |
3 |
7 |
14 |
13 |
5 |
- |
- |
- |
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