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

40°F

4°C

Humidity 86%
Wind Speed SE 3 mph
Barometer 30.03 in (1017.1 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 19 Mar 2:52 am CDT
Extended Forecast for

Petersburg IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 37. Southeast wind 3 to 5 mph.

    Low: 37 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 72. South southeast wind 3 to 6 mph.

    High: 72 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 46. South wind 3 to 7 mph.

    Low: 46 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 77. Southwest wind 6 to 13 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 77 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 46. Northwest wind 5 to 7 mph becoming light and variable after midnight.

    Low: 46 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 76. Light and variable wind becoming south southwest 5 to 7 mph in the morning.

    High: 76 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 56. South southwest wind 6 to 11 mph, with gusts as high as 22 mph.

    Low: 56 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 37. Southeast wind 3 to 5 mph.
Thursday
Sunny, with a high near 72. South southeast wind 3 to 6 mph.
Thursday Night
Partly cloudy, with a low around 46. South wind 3 to 7 mph.
Friday
Mostly sunny, with a high near 77. Southwest wind 6 to 13 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Partly cloudy, with a low around 46. Northwest wind 5 to 7 mph becoming light and variable after midnight.
Saturday
Sunny, with a high near 76. Light and variable wind becoming south southwest 5 to 7 mph in the morning.
Saturday Night
Mostly clear, with a low around 56. South southwest wind 6 to 11 mph, with gusts as high as 22 mph.
Sunday
Mostly sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 35.
Monday
Sunny, with a high near 52.
Monday Night
Mostly cloudy, with a low around 32.
Tuesday
Mostly cloudy, with a high near 57.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Mostly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Petersburg IL
 40°N 89.85°W (Elev. 551 ft)
Last Update:
1:59 am CDT Mar 19, 2026
Forecast Valid:
3am CDT Mar 19, 2026-6pm CDT Mar 25, 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

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation