Oak Harbor, WA Weather & Growing Conditions
Overnight
50°F
Mostly Cloudy
Mostly cloudy, with a low around 50. Wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 50°F | Mostly Cloudy | 0 mph | 0% |
| Saturday | 68°F | Partly Sunny | 1 to 5 mph WSW | 0% |
| Saturday Night | 49°F | Partly Cloudy | 3 mph W | 0% |
| Sunday | 67°F | Mostly Cloudy | 1 to 7 mph W | 0% |
| Sunday Night | 50°F | Mostly Cloudy | 1 to 7 mph W | 0% |
| Monday | 69°F | Mostly Sunny | 1 to 7 mph SW | 0% |
| Monday Night | 51°F | Partly Cloudy | 1 to 7 mph W | 1% |
| Tuesday | 67°F | Partly Sunny | 1 to 6 mph WSW | 1% |
| Tuesday Night | 50°F | Mostly Cloudy | 2 to 6 mph SW | 12% |
| Wednesday | 65°F | Slight Chance Light Rain | 5 mph SW | 15% |
| Wednesday Night | 50°F | Mostly Cloudy | 5 mph W | 14% |
| Thursday | 64°F | Mostly Cloudy | 2 to 7 mph WNW | 14% |
| Thursday Night | 50°F | Slight Chance Light Rain | 2 to 6 mph WNW | 20% |
| Friday | 64°F | Slight Chance Light Rain then Partly Sunny | 2 to 7 mph WNW | 20% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Oak Harbor, WA
Last spring frost
Mar 13
First fall frost
Nov 14
Growing season
244 days
Hardiness zone
8b
Explore more for Oak Harbor, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Whidbey Island Nas, Wa (2.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.