Heat Persists in the South Central U.S. and Southwest; Heavy rains in the Desert Southwest and Central Plains

Sweltering heat remains across the South-Central Plains, Lower/Middle Mississippi Valley, and the Southwest this week with limited nighttime relief. Thunderstorms will bring heavy rainfall leading to localized flash flooding in portions of the Desert Southwest and central Plains. Isolated strong to severe thunderstorms are possible across portions of the central Plains into the Northeast. Read More >

Current conditions at

Springfield - Abraham Lincoln Capital Airport (KSPI)

Lat: 39.85°NLon: 89.68°WElev: 587ft.

Mostly Cloudy

77°F

25°C

Humidity 60%
Wind Speed NW 7 mph
Barometer 30.05 in (1017.1 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 9 Sep 3:52 am CDT
Extended Forecast for

Thayer IL

  • Overnight

    Overnight: Mostly clear, with a low around 71. South wind around 9 mph, with gusts as high as 17 mph.

    Low: 71 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 3pm.  Mostly sunny, with a high near 91. South southwest wind around 9 mph becoming north northwest in the afternoon. Winds could gust as high as 17 mph.

    High: 91 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3am.  Mostly cloudy, with a low around 69. Northwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 69 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: Showers likely, mainly before noon.  Mostly cloudy, with a high near 80. Calm wind becoming northwest around 6 mph in the morning.  Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 80 °F

    Showers
    Likely then
    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 59. Light and variable wind.

    Low: 59 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 85. Calm wind becoming east southeast around 5 mph in the morning.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 64. Southeast wind 3 to 5 mph.

    Low: 64 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of showers before 1pm.  Partly sunny, with a high near 88.

    High: 88 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers.  Partly cloudy, with a low around 66.

    Low: 66 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 71. South wind around 9 mph, with gusts as high as 17 mph.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 91. South southwest wind around 9 mph becoming north northwest in the afternoon. Winds could gust as high as 17 mph.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3am. Mostly cloudy, with a low around 69. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Showers likely, mainly before noon. Mostly cloudy, with a high near 80. Calm wind becoming northwest around 6 mph in the morning. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Partly cloudy, with a low around 59. Light and variable wind.
Friday
Sunny, with a high near 85. Calm wind becoming east southeast around 5 mph in the morning.
Friday Night
Mostly clear, with a low around 64. Southeast wind 3 to 5 mph.
Saturday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 88.
Saturday Night
A 30 percent chance of showers. Partly cloudy, with a low around 66.
Sunday
Mostly sunny, with a high near 88.
Sunday Night
Partly cloudy, with a low around 68.
Monday
Mostly sunny, with a high near 93.
Monday Night
A chance of showers. Mostly clear, with a low around 68.
Tuesday
Mostly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
Thayer IL
 39.51°N 89.76°W (Elev. 659 ft)
3:36 am CDT Sep 9, 2026
3am CDT Sep 9, 2026-6pm CDT Sep 15, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database