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
Nearby towns & communities
Ahtanum
Buena
Cliffdell
Cowiche
Donald
Eschbach
Gleed
Grandview
Granger
Harrah
Mabton
Moxee
Naches
Nile
Outlook
Parker
Selah
Summitview
Tampico
Terrace Heights
Tieton
Toppenish
Union Gap
Wapato
White Swan
Yakima
Zillah
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 20, 2026.