Tumwater, WA Weather & Growing Conditions
Overnight
54°F
Mostly Clear
Mostly clear, with a low around 54. North northeast wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 54°F | Mostly Clear | 3 mph NNE | 0% |
| Tuesday | 91°F | Sunny then Areas Of Smoke | 3 to 8 mph NNE | 0% |
| Tuesday Night | 58°F | Areas Of Smoke | 2 to 7 mph NNE | 0% |
| Wednesday | 96°F | Areas Of Smoke | 2 to 7 mph NNE | 0% |
| Wednesday Night | 58°F | Mostly Clear | 0 to 5 mph NNW | 0% |
| Thursday | 93°F | Sunny | 0 to 6 mph WNW | 0% |
| Thursday Night | 57°F | Mostly Clear | 6 mph WSW | 0% |
| Friday | 89°F | Sunny | 3 to 8 mph WSW | 0% |
| Friday Night | 55°F | Mostly Clear | 1 to 8 mph WSW | 0% |
| Saturday | 84°F | Sunny | 1 to 10 mph WSW | 0% |
| Saturday Night | 53°F | Partly Cloudy | 2 to 10 mph WSW | 0% |
| Sunday | 80°F | Mostly Sunny | 2 to 9 mph WSW | 0% |
| Sunday Night | 52°F | Mostly Clear | 1 to 9 mph WSW | 0% |
| Monday | 80°F | Mostly Sunny | 1 to 8 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Tumwater, WA
Last spring frost
Apr 29
First fall frost
Oct 14
Growing season
169 days
Hardiness zone
8a
Explore more for Tumwater, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Olympia Ap, Wa (1.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.