Tumwater, WA Weather & Climate Normals
What a normal year in Tumwater actually looks like
On the 30-year record NOAA keeps for Tumwater, WA, the comfort score comes out to 51/100, strongly seasonal: Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. Only 4 months a year land in the 55–75°F range this site treats as mild.
How much Tumwater's weather actually swings
Average temperatures in Tumwater run from 39°F in Dec up to 64°F in Aug, a 25.5°F seasonal swing, a middling gap by national standards.
Tumwater, month by month
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 46°F | 33°F | 7.8in | 2in |
| Feb | 49°F | 32°F | 5.09in | 0.6in |
| Mar | 54°F | 35°F | 5.68in | 0.1in |
| Apr | 59°F | 38°F | 3.67in | 0in |
| May | 66°F | 43°F | 2.26in | 0in |
| Jun | 71°F | 47°F | 1.46in | 0in |
| Jul | 78°F | 51°F | 0.53in | 0in |
| Aug | 78°F | 51°F | 0.96in | 0in |
| Sep | 72°F | 46°F | 2.04in | 0in |
| Oct | 60°F | 41°F | 5.07in | 0in |
| Nov | 51°F | 36°F | 8.21in | 0in |
| Dec | 45°F | 33°F | 7.85in | 1.2in |
If you're timing a visit, Jun, Jul, Aug, and Sep are Tumwater's mildest stretch; if you're moving there, you should plan around Dec's cold instead.
How wet Tumwater actually gets
Over a typical year, Tumwater sees about 50.62in of precipitation a year across roughly 163 days with measurable rain or snow, with 3.9in of snow a year.
Tumwater against the rest of the country
Out of 4876 cities scored here, Tumwater comes in at 1475; within WA alone it ranks 77 of 125. Population is about 27,826.
Checking the actual forecast
These figures come from Olympia Ap, WA US, the NOAA station 1.3 miles from Tumwater, averaged over 30 years, not tomorrow's forecast.
More on how this is worked out
Why this uses the nearest NOAA station · How the comfort score is calculated