Zillah, WA Weather & Growing Conditions
Overnight
55°F
Mostly Clear
Mostly clear. Low around 55, with temperatures rising to around 57 overnight. North wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Mostly Clear | 3 mph N | 0% |
| Saturday | 77°F | Sunny | 0 to 3 mph S | 0% |
| Saturday Night | 56°F | Mostly Clear | 2 mph E | 0% |
| Sunday | 78°F | Sunny | 2 mph SE | 0% |
| Sunday Night | 57°F | Clear | 2 mph E | 0% |
| Monday | 79°F | Sunny | 2 mph W | 0% |
| Monday Night | 55°F | Partly Cloudy | 5 mph NW | 0% |
| Tuesday | 75°F | Mostly Sunny | 3 mph NW | 0% |
| Tuesday Night | 52°F | Partly Cloudy | 2 to 7 mph NW | 0% |
| Wednesday | 70°F | Mostly Sunny | 5 mph W | 1% |
| Wednesday Night | 51°F | Partly Cloudy | 3 mph NW | 1% |
| Thursday | 67°F | Mostly Sunny | 2 mph NE | 4% |
| Thursday Night | 50°F | Mostly Cloudy | 3 mph N | 7% |
| Friday | 64°F | Mostly Sunny | 6 mph NW | 6% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Zillah, WA
Last spring frost
May 4
First fall frost
Oct 10
Growing season
155 days
Hardiness zone
7a
Explore more for Zillah, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Moxee City 10 E, Wa (1.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.