Umatilla, WA Weather & Growing Conditions
Overnight
52°F
Clear
Clear, with a low around 52. Southeast wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Clear | 2 mph SE | 0% |
| Saturday | 78°F | Sunny | 2 mph S | 0% |
| Saturday Night | 52°F | Mostly Clear | 2 mph NE | 0% |
| Sunday | 80°F | Sunny | 2 mph N | 0% |
| Sunday Night | 54°F | Clear | 2 mph NE | 0% |
| Monday | 81°F | Sunny | 2 mph W | 0% |
| Monday Night | 54°F | Partly Cloudy | 2 mph SW | 0% |
| Tuesday | 78°F | Sunny | 3 mph SW | 0% |
| Tuesday Night | 51°F | Mostly Clear | 3 mph SW | 0% |
| Wednesday | 74°F | Mostly Sunny | 5 mph SW | 0% |
| Wednesday Night | 50°F | Partly Cloudy | 3 mph SW | 0% |
| Thursday | 72°F | Mostly Sunny | 0 to 3 mph W | 1% |
| Thursday Night | 50°F | Partly Cloudy | 2 mph W | 5% |
| Friday | 69°F | Mostly Sunny | 1 to 5 mph SW | 10% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Umatilla, WA
Last spring frost
Mar 27
First fall frost
Nov 4
Growing season
221 days
Hardiness zone
7b
Explore more for Umatilla, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Mcnary Dam, Wa (6.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.