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

47°F

8°C

Humidity 66%
Wind Speed SE 14 mph
Barometer 29.84 in (1010.4 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 8 Jan 3:52 am CST
Extended Forecast for

Petersburg IL

  • Today

    Today: A chance of rain, then rain and possibly a thunderstorm after 3pm. Patchy fog between 9am and 11am. High near 63. Breezy, with a south southeast wind 11 to 21 mph, with gusts as high as 36 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 63 °F

    Chance Rain
    and Patchy
    Fog then Rain
    and Breezy

  • Tonight

    Tonight: Rain and thunderstorms before midnight, then a slight chance of rain between midnight and 4am. Low around 44. Breezy, with a south wind 17 to 21 mph becoming west after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 44 °F

    Breezy. Rain
    then Slight
    Chance Rain

  • Friday

    Friday: Mostly cloudy, with a high near 50. West wind 12 to 17 mph becoming north 6 to 11 mph in the afternoon. Winds could gust as high as 29 mph.

    High: 50 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 35. Northeast wind 3 to 6 mph.

    Low: 35 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday

    Saturday: A chance of rain before noon, then a chance of rain and snow between noon and 3pm, then a chance of snow after 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 42. West northwest wind 7 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.

    High: 42 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 20. West northwest wind 14 to 16 mph, with gusts as high as 28 mph.

    Low: 20 °F

    Chance Snow
    then Mostly
    Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 32. West northwest wind 9 to 16 mph, with gusts as high as 28 mph.

    High: 32 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 22.

    Low: 22 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

Detailed Forecast

Today
A chance of rain, then rain and possibly a thunderstorm after 3pm. Patchy fog between 9am and 11am. High near 63. Breezy, with a south southeast wind 11 to 21 mph, with gusts as high as 36 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Rain and thunderstorms before midnight, then a slight chance of rain between midnight and 4am. Low around 44. Breezy, with a south wind 17 to 21 mph becoming west after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Mostly cloudy, with a high near 50. West wind 12 to 17 mph becoming north 6 to 11 mph in the afternoon. Winds could gust as high as 29 mph.
Friday Night
A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 35. Northeast wind 3 to 6 mph.
Saturday
A chance of rain before noon, then a chance of rain and snow between noon and 3pm, then a chance of snow after 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 42. West northwest wind 7 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
Saturday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 20. West northwest wind 14 to 16 mph, with gusts as high as 28 mph.
Sunday
Mostly sunny, with a high near 32. West northwest wind 9 to 16 mph, with gusts as high as 28 mph.
Sunday Night
Mostly clear, with a low around 22.
Monday
Sunny, with a high near 45.
Monday Night
Mostly clear, with a low around 32.
Tuesday
Partly sunny, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
Mostly cloudy, with a high near 39.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Petersburg IL
 40.02°N 89.82°W (Elev. 600 ft)
Last Update:
4:27 am CST Jan 8, 2026
Forecast Valid:
4am CST Jan 8, 2026-6pm CST Jan 14, 2026
 
Forecast Discussion
 
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Additional Resources

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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