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

18°F

-8°C

Humidity 65%
Wind Speed NW 6 mph
Barometer 30.14 in
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Wind Chill10°F (-12°C)
Last update 15 Jan 7:15 am CST
Extended Forecast for

Marissa IL

  • Today

    Today: Sunny, with a high near 34. Northwest wind 5 to 8 mph becoming south in the afternoon.

    High: 34 °F

    Sunny

  • Tonight

    Tonight: A slight chance of snow between 10pm and 1am. Mostly cloudy, with a low around 27. South wind 5 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    Low: 27 °F

    Slight Chance
    Snow

  • Friday

    Friday: Mostly cloudy, with a high near 45. West wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 45 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Scattered rain and snow showers before 9pm, then scattered snow showers. Mostly cloudy, with a low around 23. West wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

    Low: 23 °F

    Scattered
    Rain/Snow
    then
    Scattered
    Snow Showers

  • Saturday

    Saturday: Partly sunny, with a high near 27. West wind 11 to 15 mph, with gusts as high as 22 mph.

    High: 27 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 11.

    Low: 11 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 27.

    High: 27 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 16.

    Low: 16 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 26.

    High: 26 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 34. Northwest wind 5 to 8 mph becoming south in the afternoon.
Tonight
A slight chance of snow between 10pm and 1am. Mostly cloudy, with a low around 27. South wind 5 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Friday
Mostly cloudy, with a high near 45. West wind 9 to 14 mph, with gusts as high as 22 mph.
Friday Night
Scattered rain and snow showers before 9pm, then scattered snow showers. Mostly cloudy, with a low around 23. West wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Saturday
Partly sunny, with a high near 27. West wind 11 to 15 mph, with gusts as high as 22 mph.
Saturday Night
Partly cloudy, with a low around 11.
Sunday
Sunny, with a high near 27.
Sunday Night
Partly cloudy, with a low around 16.
M.L.King Day
Mostly sunny, with a high near 26.
Monday Night
Mostly clear, with a low around 10.
Tuesday
Sunny, with a high near 31.
Tuesday Night
Partly cloudy, with a low around 20.
Wednesday
Mostly sunny, with a high near 44.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marissa IL
 38.25°N 89.74°W (Elev. 459 ft)
Last Update:
6:21 am CST Jan 15, 2026
Forecast Valid:
7am CST Jan 15, 2026-6pm CST Jan 21, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation