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

Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

Monsoonal moisture will produce showers and thunderstorms with heavy rain over parts of the Southwest, Great Basin, and Central Rockies through Monday. Flash flooding is possible, especially in and around burn scars and in areas of steep terrain. Heat will persist across the Central U.S. early this week, spreading into the Ohio Valley and Mid-Atlantic later this week. Read More >

Current conditions at

Tacoma / McChord Air Force Base (KTCM)

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

Clear

60°F

16°C

Humidity 68%
Wind Speed N 0 MPH
Barometer 30.01 in (1016.26 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 30 Aug 11:55 PM PDT
Extended Forecast for

Fort Lewis WA

  • Overnight

    Overnight: Partly cloudy, with a low around 52. Light northeast wind.

    Low: 52 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 78. Calm wind becoming north northeast 5 to 7 mph in the morning.

    High: 78 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 54. North northeast wind around 6 mph becoming calm in the evening.

    Low: 54 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 73. Light southwest wind becoming west southwest 5 to 10 mph in the morning.

    High: 73 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 55. South wind 6 to 11 mph.

    Low: 55 °F

    Chance Rain

  • Wednesday

    Wednesday: Rain, mainly after 11am. High near 67. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 67 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain. Low around 52. Chance of precipitation is 90%.

    Low: 52 °F

    Rain then
    Rain Likely

  • Thursday

    Thursday: Rain likely, then showers and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 67.

    High: 67 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of rain, mainly before 11pm. Mostly cloudy, with a low around 50.

    Low: 50 °F

    Chance Rain

Detailed Forecast

Overnight
Partly cloudy, with a low around 52. Light northeast wind.
Monday
Mostly sunny, with a high near 78. Calm wind becoming north northeast 5 to 7 mph in the morning.
Monday Night
Partly cloudy, with a low around 54. North northeast wind around 6 mph becoming calm in the evening.
Tuesday
Partly sunny, with a high near 73. Light southwest wind becoming west southwest 5 to 10 mph in the morning.
Tuesday Night
A 30 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 55. South wind 6 to 11 mph.
Wednesday
Rain, mainly after 11am. High near 67. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain. Low around 52. Chance of precipitation is 90%.
Thursday
Rain likely, then showers and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 67.
Thursday Night
A chance of rain, mainly before 11pm. Mostly cloudy, with a low around 50.
Friday
A chance of rain. Partly sunny, with a high near 69.
Friday Night
A slight chance of rain. Partly cloudy, with a low around 50.
Saturday
Partly sunny, with a high near 72.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
A slight chance of rain. Partly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fort Lewis WA
 47.1°N 122.58°W (Elev. 299 ft)
Last Update:
11:26 pm PDT Aug 30, 2026
Forecast Valid:
1am PDT Aug 31, 2026-6pm PDT Sep 6, 2026
 
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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