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

Springfield - Abraham Lincoln Capital Airport (KSPI)

Lat: 39.85°NLon: 89.68°WElev: 587ft.

Fair

65°F

18°C

Humidity 47%
Wind Speed W 7 mph
Barometer 29.78 in (1008.4 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 4 Sep 6:52 pm CDT
Extended Forecast for

Petersburg IL

  • Tonight

    Tonight: Partly cloudy, with a low around 55. Light southwest wind becoming south southwest 5 to 10 mph in the evening. Winds could gust as high as 21 mph.

    Low: 55 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of showers after 10am. Increasing clouds, with a high near 65. West northwest wind 9 to 13 mph, with gusts as high as 21 mph.

    High: 65 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: Cloudy during the early evening, then gradual clearing, with a low around 46. West wind 3 to 7 mph.

    Low: 46 °F

    Gradual
    Clearing

  • Saturday

    Saturday: Sunny, with a high near 74. Light southwest wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

    High: 74 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 44. Northwest wind around 5 mph becoming calm in the evening.

    Low: 44 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 72. Calm wind becoming north northwest 5 to 7 mph in the morning.

    High: 72 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 44. Light and variable wind.

    Low: 44 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 55. Light southwest wind becoming south southwest 5 to 10 mph in the evening. Winds could gust as high as 21 mph.
Friday
A 20 percent chance of showers after 10am. Increasing clouds, with a high near 65. West northwest wind 9 to 13 mph, with gusts as high as 21 mph.
Friday Night
Cloudy during the early evening, then gradual clearing, with a low around 46. West wind 3 to 7 mph.
Saturday
Sunny, with a high near 74. Light southwest wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Saturday Night
Mostly clear, with a low around 44. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 72. Calm wind becoming north northwest 5 to 7 mph in the morning.
Sunday Night
Mostly clear, with a low around 44. Light and variable wind.
Monday
Sunny, with a high near 76.
Monday Night
Mostly clear, with a low around 50.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 55.
Wednesday
Sunny, with a high near 86.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Petersburg IL
 40°N 89.82°W (Elev. 541 ft)
Last Update:
6:40 pm CDT Sep 4, 2025
Forecast Valid:
7pm CDT Sep 4, 2025-6pm CDT Sep 11, 2025
 
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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