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

Sparta Community-Hunter Field Airport (KSAR)

Lat: 38.15°NLon: 89.7°WElev: 528ft.

Fair

71°F

22°C

Humidity 80%
Wind Speed N 6 mph
Barometer 30.05 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 4 Aug 12:15 am CDT
Extended Forecast for

Marissa IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 63. North wind around 6 mph.

    Low: 63 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. Northeast wind 3 to 6 mph. Chance of precipitation is 30%.

    High: 81 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Monday Night

    Monday Night: Patchy fog after 5am. Otherwise, increasing clouds, with a low around 67. Northeast wind 5 to 7 mph becoming calm after midnight.

    Low: 67 °F

    Partly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 1pm. Patchy fog before 7am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 85. Light east wind.

    High: 85 °F

    Patchy Fog
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 68. Light southeast wind.

    Low: 68 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 63. North wind around 6 mph.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. Northeast wind 3 to 6 mph. Chance of precipitation is 30%.
Monday Night
Patchy fog after 5am. Otherwise, increasing clouds, with a low around 67. Northeast wind 5 to 7 mph becoming calm after midnight.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Patchy fog before 7am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 85. Light east wind.
Tuesday Night
Mostly clear, with a low around 68. Light southeast wind.
Wednesday
Mostly sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 69.
Thursday
Sunny, with a high near 90.
Thursday Night
Mostly clear, with a low around 70.
Friday
Sunny, with a high near 91.
Friday Night
Mostly clear, with a low around 71.
Saturday
Sunny, with a high near 93.
Saturday Night
Mostly clear, with a low around 73.
Sunday
Sunny, with a high near 93.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marissa IL
 38.25°N 89.77°W (Elev. 440 ft)
Last Update:
10:21 pm CDT Aug 3, 2025
Forecast Valid:
12am CDT Aug 4, 2025-6pm CDT Aug 10, 2025
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation