Umatilla, OR Weather & Growing Conditions
Tonight
34°F
Areas Of Fog
Areas of fog after 7pm. Partly cloudy, with a low around 34. South wind 1 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 34°F | Areas Of Fog | 1 to 5 mph S | 2% |
| Wednesday | 54°F | Areas Of Fog then Sunny | 2 mph S | 1% |
| Wednesday Night | 39°F | Chance Rain Showers | 3 mph S | 48% |
| Thursday | 59°F | Patchy Fog then Mostly Sunny | 3 to 10 mph SW | 15% |
| Thursday Night | 38°F | Partly Cloudy | 1 to 5 mph S | 8% |
| Friday | 57°F | Mostly Cloudy | 2 mph S | 8% |
| Friday Night | 39°F | Mostly Cloudy | 2 mph S | 4% |
| Saturday | 60°F | Partly Sunny | 2 mph NE | 1% |
| Saturday Night | 40°F | Mostly Cloudy | 2 mph SW | 7% |
| Sunday | 61°F | Mostly Cloudy | 2 to 9 mph SW | 13% |
| Sunday Night | 39°F | Mostly Cloudy | 3 mph SW | 7% |
| Monday | 56°F | Mostly Cloudy | 2 mph N | 11% |
| Monday Night | 39°F | Mostly Cloudy then Slight Chance Rain Showers | 1 mph SE | 18% |
| Tuesday | 60°F | Slight Chance Rain Showers | 2 mph SW | 22% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Umatilla, OR
Last spring frost
Mar 30
First fall frost
Nov 4
Growing season
217 days
Hardiness zone
7b
Explore more for Umatilla, OR: full frost dates · planting calendar · Oregon frost dates
Climate data from the nearest NOAA station, Mcnary Dam #2, Or (3.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.