Temperature
Cool by day, cold at night.
57°Ftypical April high
Typical range
Cool days and some sun.

Cool by day, cold at night.
Some precipitation is expected this month.
Cloudier spells limit sunshine.
In April, afternoons feel about 50° and nights feel near 40°.
Mostly cloudy skies this month.
Calm winds are typical in April.
April late afternoons are around 55°F, easing to about 51°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 46 | 37 | 8.2 | 17 | 4.2 | 87 |
| Feb | 46 | 36 | 8.6 | 18 | 6.2 | 83 |
| Mar | 51 | 40 | 6.8 | 19 | 7.3 | 80 |
| Apr | 57 | 43 | 5.9 | 17 | 9.7 | 77 |
| May | 63 | 50 | 3.9 | 14 | 11.0 | 77 |
| Jun | 70 | 55 | 2.9 | 10 | 12.1 | 78 |
| Jul | 76 | 59 | 0.6 | 3 | 13.3 | 75 |
| Aug | 76 | 60 | 1.9 | 6 | 12.3 | 76 |
| Sep | 70 | 56 | 2.9 | 7 | 10.2 | 80 |
| Oct | 60 | 49 | 7.8 | 16 | 6.9 | 84 |
| Nov | 50 | 41 | 11.2 | 19 | 4.6 | 86 |
| Dec | 45 | 37 | 12.1 | 21 | 4.0 | 87 |
Similar climates
Want a side-by-side climate view? Compare Skagit Valley with Niagara Falls.
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: Jul 31, 2026
Data & methodology