Sunnyside, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sunnyside, a city in Yakima County, Washington.
This Afternoon
81°F
Sunny
Sunny, with a high near 81. Southeast wind around 2 mph.
7-day forecast for Sunnyside
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 81°F | Sunny | 2 mph SE | 0% |
| Tonight | 51°F | Mostly Clear | 2 mph E | 0% |
| Sunday | 85°F | Sunny | 1 mph E | 0% |
| Sunday Night | 52°F | Mostly Clear | 1 mph NE | 0% |
| Monday | 86°F | Sunny | 2 mph SE | 0% |
| Monday Night | 52°F | Partly Cloudy | 2 mph N | 0% |
| Tuesday | 82°F | Mostly Sunny | 1 mph W | 0% |
| Tuesday Night | 49°F | Partly Cloudy | 0 to 3 mph NW | 0% |
| Wednesday | 76°F | Mostly Sunny | 2 mph W | 0% |
| Wednesday Night | 47°F | Partly Cloudy | 2 mph NW | 1% |
| Thursday | 72°F | Mostly Sunny | 1 mph N | 3% |
| Thursday Night | 47°F | Partly Cloudy | 1 mph NE | 7% |
| Friday | 70°F | Partly Sunny | 0 to 3 mph NW | 7% |
| Friday Night | 44°F | Partly Cloudy | 0 to 3 mph W | 7% |
Forecast source: National Weather Service (api.weather.gov) for Sunnyside (46.316, -120.006). Updated through the day.
Growing snapshot for Sunnyside
Last spring frost
Apr 30
First fall frost
Oct 8
Growing season
160 days
Hardiness zone
7b
More local growing data for Sunnyside: nearby ZIP 98938 weather · frost dates · planting calendar · Washington frost dates
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Climate data from the nearest NOAA station, Sunnyside #2, Wa (4.4 mi from Sunnyside). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.