Rock Island, WA Weather & Growing Conditions
This Afternoon
73°F
Mostly Sunny
Mostly sunny, with a high near 73. South wind around 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Mostly Sunny | 8 mph S | 0% |
| Tonight | 55°F | Mostly Clear | 2 to 6 mph N | 0% |
| Sunday | 75°F | Sunny | 3 to 8 mph E | 0% |
| Sunday Night | 56°F | Mostly Clear | 6 mph W | 0% |
| Monday | 76°F | Sunny | 3 to 7 mph W | 0% |
| Monday Night | 54°F | Partly Cloudy | 5 to 9 mph W | 0% |
| Tuesday | 72°F | Mostly Sunny | 6 to 10 mph W | 0% |
| Tuesday Night | 49°F | Partly Cloudy | 7 to 12 mph W | 0% |
| Wednesday | 67°F | Mostly Sunny | 6 to 9 mph W | 0% |
| Wednesday Night | 48°F | Partly Cloudy | 9 mph NW | 1% |
| Thursday | 63°F | Partly Sunny | 5 to 8 mph N | 7% |
| Thursday Night | 49°F | Mostly Cloudy | 7 mph N | 9% |
| Friday | 61°F | Partly Sunny | 9 mph NW | 9% |
| Friday Night | 46°F | Partly Cloudy | 9 mph NW | 6% |
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 (7.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.