Hermiston, OR Weather & Growing Conditions
Today
91°F
Smoke
Smoke. Sunny, with a high near 91. Northeast wind 1 to 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 91°F | Smoke | 1 to 7 mph NE | 0% |
| Tonight | 59°F | Areas Of Smoke | 1 to 6 mph E | 0% |
| Wednesday | 96°F | Areas Of Smoke | 1 to 5 mph N | 0% |
| Wednesday Night | 62°F | Areas Of Smoke then Clear | 3 mph SW | 0% |
| Thursday | 100°F | Sunny | 1 to 5 mph SW | 0% |
| Thursday Night | 68°F | Clear | 2 to 8 mph SW | 0% |
| Friday | 98°F | Sunny | 6 to 12 mph SW | 0% |
| Friday Night | 66°F | Clear | 3 to 9 mph SW | 0% |
| Saturday | 95°F | Sunny | 3 to 8 mph SW | 0% |
| Saturday Night | 64°F | Mostly Clear | 7 to 12 mph SW | 0% |
| Sunday | 90°F | Sunny | 7 to 10 mph SW | 0% |
| Sunday Night | 61°F | Mostly Clear | 9 mph SW | 0% |
| Monday | 89°F | Sunny | 8 mph W | 0% |
| Monday Night | 60°F | Mostly Clear | 8 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Hermiston, OR
Last spring frost
Apr 27
First fall frost
Oct 7
Growing season
163 days
Hardiness zone
7b
Explore more for Hermiston, OR: full frost dates · planting calendar · Oregon frost dates
Climate data from the nearest NOAA station, Hermiston 2 Nw, Or (1.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.