National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Tacoma / McChord Air Force Base (KTCM)

Lat: 47.15°NLon: 122.48333°WElev: 322.0ft.

Mostly Cloudy

69°F

21°C

Humidity 53%
Wind Speed W 11 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 28 Aug 07:55 PM PDT
Extended Forecast for

Fort Lewis WA

  • Tonight

    Tonight: Mostly cloudy, with a low around 53. West wind around 8 mph becoming south after midnight.

    Low: 53 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of rain between noon and 3pm. Partly sunny, with a high near 71. West southwest wind 7 to 10 mph.

    High: 71 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 51. South southwest wind 6 to 9 mph.

    Low: 51 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 73. West southwest wind around 5 mph.

    High: 73 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 52. West wind around 5 mph becoming calm in the evening.

    Low: 52 °F

    Partly Cloudy

  • Monday

    Monday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 77.

    High: 77 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of rain after 11am. Partly sunny, with a high near 75.

    High: 75 °F

    Slight Chance
    Rain

  • Tuesday Night

    Tuesday Night: A chance of rain. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 53. West wind around 8 mph becoming south after midnight.
Saturday
A 30 percent chance of rain between noon and 3pm. Partly sunny, with a high near 71. West southwest wind 7 to 10 mph.
Saturday Night
Increasing clouds, with a low around 51. South southwest wind 6 to 9 mph.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 73. West southwest wind around 5 mph.
Sunday Night
Partly cloudy, with a low around 52. West wind around 5 mph becoming calm in the evening.
Monday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
A slight chance of rain after 11am. Partly sunny, with a high near 75.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 54.
Wednesday
Rain. Cloudy, with a high near 66.
Wednesday Night
Rain. Mostly cloudy, with a low around 51.
Thursday
Rain likely. Mostly cloudy, with a high near 69.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 50.
Friday
A chance of rain. Partly sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fort Lewis WA
 47.08°N 122.6°W (Elev. 302 ft)
Last Update:
12:35 pm PDT Aug 28, 2026
Forecast Valid:
8pm PDT Aug 28, 2026-6pm PDT Sep 4, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation