Temperature
Cold by day, cold at night.
Bothell is usually most comfortable from June to September. Typical daytime highs range from 45–73°F across the year. Rain varies by season.

Cold by day, cold at night.
It rains on most days. About 18 wet days, the highest monthly average.
Sunshine is limited, with cloud often dominating.
Humidity is rarely noticeable in the cool air.
In November, afternoons feel about 42° and nights feel near 36°.
Mostly cloudy skies this month.
Calm winds are typical in November.
November late afternoons are around 48°F, easing to about 46°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 46 | 39 | 7.1 | 18 | 4.4 | 83 |
| Feb | 48 | 39 | 4.7 | 15 | 6.3 | 80 |
| Mar | 52 | 41 | 5.5 | 18 | 7.8 | 78 |
| Apr | 57 | 44 | 4.5 | 17 | 9.8 | 75 |
| May | 63 | 48 | 3.1 | 13 | 11.0 | 75 |
| Jun | 67 | 52 | 2.8 | 11 | 11.9 | 74 |
| Jul | 73 | 56 | 1.3 | 6 | 13.0 | 72 |
| Aug | 73 | 56 | 1.5 | 6 | 12.1 | 73 |
| Sep | 68 | 53 | 2.8 | 9 | 10.4 | 78 |
| Oct | 58 | 47 | 5.6 | 15 | 7.3 | 83 |
| Nov | 50 | 42 | 7.8 | 18 | 4.9 | 83 |
| Dec | 45 | 38 | 7.1 | 18 | 4.2 | 83 |
Similar climates
Want a side-by-side climate view? Compare Bothell with New York City.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Aug 27, 2026
Data & methodology