Sunnyside, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sunnyside, a city in Yakima County, Washington.
Tonight
32°F
Areas Of Fog
Areas of fog. Partly cloudy, with a low around 32. North wind around 1 mph.
7-day forecast for Sunnyside
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 32°F | Areas Of Fog | 1 mph N | 2% |
| Wednesday | 55°F | Areas Of Fog then Sunny | 2 mph E | 2% |
| Wednesday Night | 36°F | Patchy Fog | 2 mph NE | 49% |
| Thursday | 59°F | Patchy Fog then Mostly Sunny | 1 mph W | 2% |
| Thursday Night | 35°F | Partly Cloudy | 1 mph W | 10% |
| Friday | 58°F | Mostly Cloudy | 1 mph W | 10% |
| Friday Night | 36°F | Mostly Cloudy | 1 mph W | 3% |
| Saturday | 60°F | Partly Sunny | 0 mph | 0% |
| Saturday Night | 37°F | Mostly Cloudy | 0 mph | 8% |
| Sunday | 62°F | Partly Sunny | 0 to 9 mph SW | 9% |
| Sunday Night | 35°F | Mostly Cloudy | 2 mph W | 9% |
| Monday | 58°F | Mostly Cloudy | 0 mph | 10% |
| Monday Night | 36°F | Chance Rain Showers | 0 mph | 30% |
| Tuesday | 60°F | Chance Rain Showers | 0 mph | 30% |
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 Nov 4, 2026.