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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

Renton Municipal Airport (KRNT)

Lat: 47.49509°NLon: 122.21437°WElev: 23.0ft.

Mostly Cloudy

46°F

8°C

Humidity 65%
Wind Speed NNW 4 MPH
Barometer 30.29 in (1025.74 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 21 Mar 10:53 AM PDT
Extended Forecast for

Renton WA

Flood Warning March 21, 11:12am until March 21, 11:00pm
Click here for hazard details and duration
Flood Warning
  •  
    Flood Warning March 21, 11:12am until March 21, 11:00pm

    NOW until 11:00pm Sat

    Flood Warning

  • Today

    High: 49 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 38. Southeast wind 3 to 6 mph.

    Low: 38 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: A slight chance of rain and snow before 11am. Partly sunny, with a high near 52. South southeast wind around 5 mph becoming light and variable. Chance of precipitation is 20%.

    High: 52 °F

    Slight Chance
    Rain/Snow
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 36. North northwest wind around 5 mph becoming calm in the evening.

    Low: 36 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 52. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 52 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 40 percent chance of rain after 11pm. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Chance Rain

  • Tuesday

    Tuesday: Rain. High near 54. Chance of precipitation is 100%.

    High: 54 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Rain

Detailed Forecast

Today
Mostly sunny, with a high near 49. Light west northwest wind.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 38. Southeast wind 3 to 6 mph.
Sunday
A slight chance of rain and snow before 11am. Partly sunny, with a high near 52. South southeast wind around 5 mph becoming light and variable. Chance of precipitation is 20%.
Sunday Night
Mostly cloudy, with a low around 36. North northwest wind around 5 mph becoming calm in the evening.
Monday
Partly sunny, with a high near 52. Calm wind becoming north northwest around 6 mph in the afternoon.
Monday Night
A 40 percent chance of rain after 11pm. Mostly cloudy, with a low around 41.
Tuesday
Rain. High near 54. Chance of precipitation is 100%.
Tuesday Night
Rain. Mostly cloudy, with a low around 40.
Wednesday
Rain. Mostly cloudy, with a high near 51.
Wednesday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 38.
Thursday
A chance of rain. Partly sunny, with a high near 52.
Thursday Night
A slight chance of rain. Partly cloudy, with a low around 36.
Friday
A slight chance of rain. Partly sunny, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Renton WA
 47.48°N 122.19°W (Elev. 200 ft)
Last Update:
11:27 pm PDT Mar 20, 2026
Forecast Valid:
11am PDT Mar 21, 2026-6pm PDT Mar 27, 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