Rock Island, WA Weather & Growing Conditions
Today
74°F
Mostly Sunny
Mostly sunny, with a high near 74. Northeast wind 3 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Mostly Sunny | 3 to 8 mph NE | 0% |
| Tonight | 55°F | Mostly Clear | 2 to 6 mph W | 0% |
| Sunday | 75°F | Sunny | 2 to 7 mph E | 0% |
| Sunday Night | 55°F | Mostly Clear | 2 to 6 mph NW | 0% |
| Monday | 75°F | Sunny | 6 mph W | 0% |
| Monday Night | 54°F | Partly Cloudy | 5 to 8 mph W | 0% |
| Tuesday | 72°F | Mostly Sunny | 7 mph W | 0% |
| Tuesday Night | 51°F | Partly Cloudy | 8 mph W | 0% |
| Wednesday | 68°F | Mostly Sunny | 7 mph W | 0% |
| Wednesday Night | 50°F | Mostly Cloudy | 8 mph W | 1% |
| Thursday | 65°F | Partly Sunny | 6 mph W | 6% |
| Thursday Night | 50°F | Mostly Cloudy | 7 mph W | 8% |
| Friday | 62°F | Mostly Sunny | 9 mph NW | 8% |
| Friday Night | 47°F | Partly Cloudy | 9 mph NW | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Rock Island, WA
Last spring frost
Apr 8
First fall frost
Oct 24
Growing season
200 days
Hardiness zone
7a
Explore more for Rock Island, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Wenatchee Pangborn Ap, Wa (12.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.