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

Peoria - General Downing-Peoria International Airport (KPIA)

Lat: 40.67°NLon: 89.68°WElev: 659ft.

Fair

79°F

26°C

Humidity 42%
Wind Speed W 12 mph
Barometer 30.01 in (1015.8 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 19 Jun 3:54 pm CDT
Extended Forecast for

Washington IL

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 4am. Mostly cloudy, with a low around 59. West northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 59 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny, with a high near 80. West northwest wind 3 to 7 mph.

    High: 80 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 59. Calm wind becoming east around 5 mph after midnight.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers, then showers and possibly a thunderstorm after 7am. High near 74. East wind 8 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    High: 74 °F

    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 57. North northeast wind 14 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 57 °F

    Showers

  • Monday

    Monday: Partly sunny, with a high near 74. North northeast wind 11 to 14 mph, with gusts as high as 22 mph.

    High: 74 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 53. North northeast wind 5 to 9 mph becoming light northeast in the evening. Winds could gust as high as 16 mph.

    Low: 53 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Tuesday Night

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

    Low: 57 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 4am. Mostly cloudy, with a low around 59. West northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 80. West northwest wind 3 to 7 mph.
Saturday Night
Partly cloudy, with a low around 59. Calm wind becoming east around 5 mph after midnight.
Sunday
A chance of showers, then showers and possibly a thunderstorm after 7am. High near 74. East wind 8 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Sunday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 57. North northeast wind 14 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Monday
Partly sunny, with a high near 74. North northeast wind 11 to 14 mph, with gusts as high as 22 mph.
Monday Night
Partly cloudy, with a low around 53. North northeast wind 5 to 9 mph becoming light northeast in the evening. Winds could gust as high as 16 mph.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Partly cloudy, with a low around 57.
Wednesday
A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 77.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Partly cloudy, with a low around 57.
Friday
A chance of showers. Mostly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Washington IL
 40.69°N 89.41°W (Elev. 751 ft)
Last Update:
1:26 pm CDT Jun 19, 2026
Forecast Valid:
4pm CDT Jun 19, 2026-6pm CDT Jun 26, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation