Washington · NWS SEW office

Tumwater, WA weather

It is 47°F and light rain at Olympia, Olympia Airport as of Oct 28, 2:10 AM PDT. Overnight: Chance Light Rain, low near 39°F, 44% chance of precipitation. Forecast from the National Weather Service, issued Oct 27, 11:27 PM PDT.

Updated Oct 28, 2:26 AM PDT (snapshot)

Current conditions

Temperature

47°F

Light Rain · feels like 42°F

Wind

SSW 10 mph

Humidity 93% · dew point 45°F

Pressure · visibility

29.88 inHg

Visibility 10 mi

Observed at Olympia, Olympia Airport (KOLM), Oct 28, 2:10 AM PDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the Tumwater forecast zone right now.

Around the NWS SEW forecast area

No active alerts in zones served by the SEW office near Tumwater.

From the alert snapshot of Oct 28, 2026, 5:12 AM EDT. Washington has 5 active alerts: see them all.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for Tumwater (local time)
TimeTempForecastPrecip. chanceWind
Wed 4 AM42°FChance Light Rain52%SSW 7 mph
Wed 5 AM41°FChance Light Rain44%SSW 7 mph
Wed 6 AM40°FChance Light Rain35%SSW 7 mph
Wed 7 AM40°FSlight Chance Light Rain24%SSW 7 mph
Wed 8 AM39°FSlight Chance Light Rain21%SSW 7 mph
Wed 9 AM41°FChance Light Rain25%SSW 8 mph
Wed 10 AM44°FChance Light Rain29%SSW 9 mph
Wed 11 AM46°FLight Rain Likely58%SSW 9 mph
Wed 12 PM50°FLight Rain Likely58%SW 9 mph
Wed 1 PM52°FLight Rain Likely60%SW 9 mph
Wed 2 PM52°FChance Light Rain40%SW 8 mph
Wed 3 PM53°FLight Rain Likely56%SW 8 mph
Wed 4 PM52°FLight Rain Likely65%SSW 7 mph
Wed 5 PM51°FChance Light Rain48%SSW 5 mph
Wed 6 PM49°FChance Light Rain32%SSW 5 mph
Wed 7 PM45°FMostly Cloudy10%SSW 5 mph
Wed 8 PM43°FMostly Cloudy14%S 5 mph
Wed 9 PM42°FMostly Cloudy12%S 5 mph
Wed 10 PM41°FSlight Chance Light Rain16%S 5 mph
Wed 11 PM40°FChance Light Rain33%S 6 mph
Thu 12 AM39°FLight Rain Likely55%S 6 mph
Thu 1 AM38°FChance Light Rain54%S 6 mph
Thu 2 AM37°FChance Light Rain36%S 3 mph
Thu 3 AM37°FSlight Chance Light Rain19%S 3 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Tumwater can differ.

7-day forecast

Overnight

Low 39°F

A chance of rain. Mostly cloudy. Low around 39, with temperatures rising to around 41 overnight. South southwest wind around 9 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.

Wednesday

High 54°F·Low 32°F

Rain. Mostly cloudy. High near 54, with temperatures falling to around 51 in the afternoon. South southwest wind 5 to 9 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.

Wednesday Night: Rain likely. Mostly cloudy. Low around 32, with temperatures rising to around 37 overnight. South southwest wind 3 to 7 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

Thursday

High 54°F·Low 31°F

Rain likely. Mostly cloudy, with a high near 54. South southwest wind 2 to 6 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

Thursday Night: Rain likely. Mostly cloudy, with a low around 31. North northeast wind around 2 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

Friday

High 54°F·Low 29°F

Rain likely. Mostly cloudy, with a high near 54. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

Friday Night: A chance of rain. Mostly cloudy, with a low around 29.

Saturday

High 54°F·Low 30°F

A slight chance of rain before 5pm. Mostly cloudy, with a high near 54.

Saturday Night: Mostly cloudy, with a low around 30.

Sunday

High 56°F·Low 31°F

Partly sunny, with a high near 56.

Sunday Night: Mostly cloudy, with a low around 31.

Monday

High 57°F·Low 33°F

Mostly cloudy, with a high near 57.

Monday Night: Mostly cloudy, with a low around 33.

Tuesday

High 58°F

Mostly cloudy, with a high near 58.

Nearby cities

Larger cities in the area

Other cities in Thurston County

See every city we cover in Washington, or check all active alerts.

About this forecast

Forecast office
Tumwater is served by the National Weather Service SEW forecast office, forecast zone WAZ317, county zone WAC067.
Location used
The Census Bureau's internal point for Tumwater (46.9895, -122.9173), in Thurston County. Population: 27,826 (2024 estimate), number 42 of the 58 Washington cities on this site.
Radar
Nearest NWS radar: KLGX. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/46.9895,-122.9173 (forecast issued Oct 27, 11:27 PM PDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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