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Jalapa, Illinois Weather Forecast
Jalapa, Illinois Weather
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Weather Forecast for Jalapa, Illinois : Greene County
Issued: 3:16 am CST Dec 7, 2025 Latitude: 39.2206023 Longitude: -90.3242823 View on Google Maps

MouseOver for Detail Forecast
Overnight Sunday Monday Tuesday Wednesday Thursday Friday Saturday
20% chance of snow on Overnight 20% chance of snow on Sunday Mostly Sunny on Monday Mostly Sunny on Tuesday Partly Sunny on Wednesday 40% chance of snow on Thursday Mostly Sunny on Friday Partly Sunny on Saturday
Low: 34°F High: 37 °F High: 31°F High: 48°F High: 44°F High: 33°F High: 22°F High: 18°F
Low: 19°F Low: 21°F Low: 36°F Low: 25°F Low: 13°F Low: 3°F  
Snow Snow Mostly Sunny Mostly Sunny Partly Sunny Snow Mostly Sunny Partly Sunny
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Current Conditions at
ST CHARLES - (KSET)
34°
Clear
Mist
as of 3:54 AM CST
Rel. Humidity: 86%
Dew Point: 30°F
Visibility: 6 Miles
Pressure: 29.92 in.
Flight Rule: VFR
Wind Data
6 MPH
140° Southeast
Cloud Level(s): Clear
Current Conditions at
ALTON - (KALN)
37°
Cloudy
Mist
as of 3:55 AM CST
Rel. Humidity: 86%
Dew Point: 34°F
Visibility: 5 Miles
Pressure: 29.93 in.
Flight Rule: MVFR
Wind Data
7 MPH
160° South
Cloud Level(s): Solid Overcast at 1200ft
Current Conditions at
ST LOUIS - (KSTL)
37°
Cloudy
as of 3:51 AM CST
Rel. Humidity: 86%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 29.92 in.
Flight Rule: MVFR
Wind Data
5 MPH
170° South
Cloud Level(s): Solid Overcast at 1500ft
Current Conditions at
LITCHFIELD MUNI ARP - (K3LF)
34°
Cloudy
Mist
as of 3:55 AM CST
Rel. Humidity: 93%
Dew Point: 32°F
Visibility: 2 Miles
Pressure: 29.95 in.
Flight Rule: LIFR
Wind Data
8 MPH
170° South
Cloud Level(s): Solid Overcast at 300ft
20% chance of snow Overnight Overnight... A chance of sprinkles and flurries. Mostly cloudy, with a low around 34. South wind around 6 mph.

20% chance of snow Sunday Sunday... A chance of sprinkles and flurries before 9am. Cloudy, with a temperature rising to near 37 by 9am, then falling to around 30 during the remainder of the day. Light and variable wind becoming north 9 to 14 mph in the morning. Winds could gust as high as 23 mph.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 19. North wind 6 to 11 mph, with gusts as high as 21 mph.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 31. Light and variable wind.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 21. South wind 5 to 10 mph, with gusts as high as 20 mph.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 48.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 36.

Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 44.

30% chance of snow Wednesday Night Wednesday Night... A 30 percent chance of snow after midnight. Mostly cloudy, with a low around 25.

40% chance of snow Thursday Thursday... A 40 percent chance of snow. Mostly cloudy, with a high near 33.

20% chance of snow Thursday Night Thursday Night... A 20 percent chance of snow. Mostly cloudy, with a low around 13.

Mostly Sunny on Friday Friday... Mostly sunny, with a high near 22.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 3.

Partly Sunny on Saturday Saturday... Partly sunny and cold, with a high near 18.

Current Radar Image


Sun Almanac for Jalapa, Illinois
Sunrise: 07:08 AM
Sunset: 4:38 PM
Civil Sunrise:06:38 AM
Civil Sunset: 5:08 PM
Nautical Sunrise: 06:05 AM
Nautical Sunset: 5:41 PM
Astro Sunrise: 05:32 AM
Astro Sunset: 6:14 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.