Sunnyside, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sunnyside, a city in Yakima County, Washington.
Today
90°F
Areas Of Smoke
Areas of smoke. Sunny, with a high near 90. North wind 0 to 6 mph.
7-day forecast for Sunnyside
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 90°F | Areas Of Smoke | 0 to 6 mph N | 0% |
| Tonight | 55°F | Areas Of Smoke | 0 to 5 mph NE | 0% |
| Wednesday | 96°F | Areas Of Smoke | 1 mph SE | 0% |
| Wednesday Night | 57°F | Patchy Smoke then Clear | 1 mph NE | 0% |
| Thursday | 101°F | Sunny | 0 to 3 mph SW | 0% |
| Thursday Night | 60°F | Clear | 5 mph W | 0% |
| Friday | 99°F | Sunny | 3 mph W | 0% |
| Friday Night | 59°F | Clear | 1 to 10 mph NW | 0% |
| Saturday | 95°F | Sunny | 3 mph W | 0% |
| Saturday Night | 57°F | Mostly Clear | 3 to 10 mph NW | 0% |
| Sunday | 91°F | Sunny | 3 mph W | 0% |
| Sunday Night | 55°F | Mostly Clear | 2 to 7 mph NW | 0% |
| Monday | 90°F | Sunny | 2 mph W | 0% |
| Monday Night | 54°F | Clear | 2 to 6 mph W | 0% |
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 Aug 4, 2026.