| Daily Summary |
| | Actual | Average (KSEA) | Record (KSEA) |
| Temperature |
| Mean Temperature |
°F
|
43°F
|
|
| Max Temperature |
51°F
|
50°F
|
63°F
(1991) |
| Min Temperature |
44°F
|
37°F
|
22°F
(1995) |
| Degree Days |
| Heating Degree Days |
18 |
22 |
|
| Month to date heating degree days |
|
308 |
|
| Since 1 July heating degree days |
|
2957 |
|
| Cooling Degree Days |
0 |
0 |
|
| Month to date cooling degree days |
|
0 |
|
| Year to date cooling degree days |
|
0 |
|
| Moisture |
| Dew Point |
41°F
| | |
| Average Humidity |
79 |
|
|
| Maximum Humidity |
86 |
|
|
| Minimum Humidity |
71 |
|
|
| Precipitation |
| Precipitation |
0.03 in
|
0.11 in
|
0.74 in
(1971) |
| Month to date precipitation |
|
1.82 |
|
| Year to date precipitation |
|
7.39 |
|
| Snow |
| Snow |
0.00 in
|
in
|
4.20 in
(1956) |
| Month to date snowfall |
|
|
|
| Since 1 July snowfall |
|
|
|
| Snow Depth |
in
|
| |
| Wind |
| Wind Speed |
5 mph
| | |
| Max Wind Speed |
9 mph
| | |
| Max Gust Speed |
mph
| | |
| Visibility |
10 miles
| | |
| Events |
Rain
| | |
|
| Key: T is trace of precipitation, MM is missing value |
|
Source: NWS Daily Summary |
