What is the best way to use the Washington climate data?
Use the monthly high and low averages to compare county by season, then open the climate trends page for a month-by-month chart.
County count
39
Summer candidates
22
Winter candidates
0
Washington Climate Summary
Seasonal climate context for search and comparison
Washington includes 39 county records. The annual average high is 57.7℉ and the annual average low is 38.7℉ based on the monthly climate dataset.
August has the highest average high at 78.4℉, while December has the lowest average low at 27.7℉. This helps compare summer comfort and winter warmth without relying on a single daily weather snapshot.
Under the default summer filter, 22 county match the cooling criteria. Under the default winter filter, 0 county match the warm-winter criteria.
Cool-summer candidates include Jefferson County, Clallam County, Whatcom County.
Washington Monthly Temperature Charts
State / County Average high Average low
Jan
39.4℉
28.2℉
Feb
43.5℉
28.8℉
Mar
49.8℉
32.0℉
Apr
56.3℉
36.0℉
May
64.4℉
42.3℉
Jun
70.0℉
47.3℉
Jul
78.3℉
52.3℉
Aug
78.4℉
52.2℉
Sep
71.1℉
46.8℉
Oct
57.7℉
38.8℉
Nov
45.3℉
32.2℉
Dec
38.5℉
27.7℉
Summer candidates
Jun-Aug average high no higher than 78.8℉, scroll to view all 22
| County | Average high | Average low |
|---|---|---|
| Jefferson County | 66.4℉ | 47.3℉ |
| Clallam County | 66.6℉ | 48.9℉ |
| Whatcom County | 67.8℉ | 48.0℉ |
| Skagit County | 68.7℉ | 49.1℉ |
| Snohomish County | 68.7℉ | 49.5℉ |
| King County | 70.2℉ | 50.2℉ |
| Pierce County | 70.2℉ | 48.6℉ |
| Skamania County | 70.3℉ | 47.8℉ |
| Wahkiakum County | 70.5℉ | 50.2℉ |
| Pacific County | 70.7℉ | 50.4℉ |
| San Juan County | 70.9℉ | 51.4℉ |
| Grays Harbor County | 71.1℉ | 50.2℉ |
| Island County | 71.2℉ | 52.0℉ |
| Chelan County | 72.1℉ | 48.2℉ |
| Mason County | 72.1℉ | 50.2℉ |
| Lewis County | 72.3℉ | 48.2℉ |
| Cowlitz County | 73.6℉ | 50.4℉ |
| Okanogan County | 73.8℉ | 48.4℉ |
| Kitsap County | 73.9℉ | 52.9℉ |
| Pend Oreille County | 74.1℉ | 47.3℉ |
| Thurston County | 75.2℉ | 51.1℉ |
| Kittitas County | 75.4℉ | 49.6℉ |
Winter candidates
Dec-Feb average low no lower than 41.0℉, scroll to view all 0
| County | Average high | Average low |
|---|---|---|
No matching counties | ||
Washington County Highlights
Rank counties by summer comfort, winter warmth, and seasonal stability
Coolest Summer
Jefferson County Average high 66.4℉ Clallam County Average high 66.6℉ Whatcom County Average high 67.8℉ Skagit County Average high 68.7℉ Snohomish County Average high 68.7℉ King County Average high 70.2℉ Pierce County Average high 70.2℉ Skamania County Average high 70.3℉ Wahkiakum County Average high 70.5℉ Pacific County Average high 70.7℉Warmest Winter
San Juan County Average low 36.0℉ Island County Average low 35.4℉ Kitsap County Average low 35.1℉ Clark County Average low 34.7℉ Pacific County Average low 34.7℉ Wahkiakum County Average low 34.7℉ Grays Harbor County Average low 34.3℉ Thurston County Average low 33.8℉ Cowlitz County Average low 33.3℉ Clallam County Average low 33.1℉Frequently Asked Questions
Short answers based on the same visible climate data.
What does the summer filter mean?
The default summer filter selects places where June, July, and August average highs are no higher than 78.8℉.
What does the winter filter mean?
The default winter filter selects places where December, January, and February average lows are no lower than 41.0℉.