Rock Island, WA Weather & Growing Conditions
Today
49°F
Sunny
Sunny. High near 49, with temperatures falling to around 45 in the afternoon. Southeast wind 0 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 49°F | Sunny | 0 to 8 mph SE | 14% |
| Tonight | 39°F | Chance Rain Showers | 0 to 5 mph W | 29% |
| Thursday | 53°F | Sunny | 3 mph W | 0% |
| Thursday Night | 37°F | Partly Cloudy | 0 to 3 mph NW | 10% |
| Friday | 49°F | Mostly Cloudy | 0 to 5 mph E | 10% |
| Friday Night | 40°F | Mostly Cloudy | 0 to 3 mph N | 6% |
| Saturday | 52°F | Partly Sunny | 0 to 5 mph NE | 2% |
| Saturday Night | 41°F | Mostly Cloudy then Slight Chance Rain Showers | 2 to 8 mph W | 15% |
| Sunday | 53°F | Slight Chance Rain Showers then Partly Sunny | 3 to 8 mph W | 15% |
| Sunday Night | 38°F | Mostly Cloudy | 2 to 6 mph W | 2% |
| Monday | 49°F | Partly Sunny then Slight Chance Rain Showers | 3 mph N | 15% |
| Monday Night | 39°F | Chance Rain Showers | 1 mph N | 25% |
| Tuesday | 50°F | Chance Rain Showers | 3 mph E | 25% |
| Tuesday Night | 41°F | Chance Rain Showers | 3 mph N | 27% |
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 (6.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.