Thunderstorms and Heavy Rainfall in the Plains; Hazardous Heat in the South and Southeast

Severe thunderstorms will be possible across the northern/central Plains through Tuesday afternoon and from the central Plains to the Mid-Mississippi Valley Tuesday evening through Wednesday morning. Storms may produce large hail and damaging wind gusts, and heavy rainfall may lead to scattered instances of flash flooding. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Current conditions at

Tacoma / McChord Air Force Base (KTCM)

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

Clear

76°F

24°C

Humidity 52%
Wind Speed ENE 4 MPH
Barometer 30.03 in (1016.93 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 17 Aug 07:55 PM PDT
Extended Forecast for

Steilacoom WA

  • Tonight

    Tonight: Increasing clouds, with a low around 56. Light and variable wind becoming west around 5 mph.

    Low: 56 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Cloudy through mid morning, then gradual clearing, with a high near 77. Southwest wind 3 to 6 mph.

    High: 77 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 55. South southwest wind 3 to 7 mph.

    Low: 55 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Cloudy, then gradually becoming mostly sunny, with a high near 76. West wind 3 to 5 mph.

    High: 76 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 56. Light west northwest wind.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of rain before 11am.  Mostly cloudy, with a high near 76.

    High: 76 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Friday Night

    Friday Night: A slight chance of rain.  Mostly cloudy, with a low around 56.

    Low: 56 °F

    Slight Chance
    Rain

Detailed Forecast

Tonight
Increasing clouds, with a low around 56. Light and variable wind becoming west around 5 mph.
Tuesday
Cloudy through mid morning, then gradual clearing, with a high near 77. Southwest wind 3 to 6 mph.
Tuesday Night
Increasing clouds, with a low around 55. South southwest wind 3 to 7 mph.
Wednesday
Cloudy, then gradually becoming mostly sunny, with a high near 76. West wind 3 to 5 mph.
Wednesday Night
Partly cloudy, with a low around 56. Light west northwest wind.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
Partly cloudy, with a low around 57.
Friday
A slight chance of rain before 11am. Mostly cloudy, with a high near 76.
Friday Night
A slight chance of rain. Mostly cloudy, with a low around 56.
Saturday
A slight chance of rain before 11am. Mostly cloudy, with a high near 70.
Saturday Night
Mostly cloudy, with a low around 55.
Sunday
Mostly cloudy, with a high near 73.
Sunday Night
Partly cloudy, with a low around 56.
Monday
Partly sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
Steilacoom WA
 47.16°N 122.6°W (Elev. 253 ft)
11:26 am PDT Aug 17, 2026
9pm PDT Aug 17, 2026-6pm PDT Aug 24, 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