Onalaska, WA Weather & Growing Conditions
Overnight
52°F
Patchy Smoke
Patchy smoke. Clear, with a low around 52. North wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Patchy Smoke | 2 mph N | 0% |
| Tuesday | 91°F | Areas Of Smoke | 1 to 6 mph N | 0% |
| Tuesday Night | 57°F | Smoke | 1 to 5 mph N | 0% |
| Wednesday | 95°F | Areas Of Smoke | 1 to 5 mph NNW | 0% |
| Wednesday Night | 57°F | Mostly Clear | 0 to 3 mph NNW | 0% |
| Thursday | 94°F | Sunny | 0 to 3 mph NW | 0% |
| Thursday Night | 56°F | Mostly Clear | 0 to 3 mph NNW | 0% |
| Friday | 88°F | Sunny | 0 to 6 mph NW | 0% |
| Friday Night | 53°F | Mostly Clear | 0 to 6 mph NW | 0% |
| Saturday | 82°F | Sunny | 0 to 8 mph NW | 0% |
| Saturday Night | 50°F | Partly Cloudy | 0 to 8 mph NW | 0% |
| Sunday | 77°F | Mostly Sunny | 0 to 6 mph NW | 0% |
| Sunday Night | 50°F | Partly Cloudy | 0 to 6 mph NW | 0% |
| Monday | 78°F | Mostly Sunny | 0 to 6 mph NNW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Onalaska, WA
Last spring frost
Apr 5
First fall frost
Oct 25
Growing season
196 days
Hardiness zone
8a
Explore more for Onalaska, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Toledo Faa Ap, Wa (5.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.