SOUTHERN ILLINOIS UNIVERSITY, IL 62026 Weather Forecast & Current Conditions

Enter ZIP code or City, State   
    


ALTON, IL
Current Weather

12:15 AM CST DEC 14, 2025
Clear
9°F
Feels Like: -4°F
Dewpoint: 0°F
Rel. Hum.: 62%
Visibility: 10 miles
Wind: NW at 9 mph, gusts to 21
Pressure: 30.53 inches
Last 72 hours

Local Area Snow Depth

Illinois Current Weather

Illinois MOS Forecast Weather


Weather Map


(Automated weather data from NWS/FAA)
10-Day model forecast maps
2025 Hurricanes

SOUTHERN ILLINOIS UNIVERSITY, IL 62026
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
OVERNIGHT
Mostly cloudy late this evening, then clearing. Much colder with lows around 3 above. Northwest winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 13 below.
SUNDAY
Sunny. Much cooler with highs around 15. North winds 10 to 15 mph. Wind chill values as low as 14 below in the morning.
SUNDAY NIGHT
Clear. Lows around 8 above. East winds around 5 mph, becoming south with gusts up to 20 mph after midnight. Wind chill values as low as 3 below.
MONDAY
Sunny. Not as cool with highs in the lower 40s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 3 below in the morning.
MONDAY NIGHT
Mostly clear. Not as cool with lows in the mid 20s. Southwest winds around 5 mph.
TUESDAY
Sunny. Not as cool with highs in the lower 50s.
TUESDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. Not as cool with lows in the mid 30s.
WEDNESDAY
Mostly sunny. Highs in the mid 50s.
WEDNESDAY NIGHT
Mostly cloudy. A chance of rain after midnight. Lows in the mid 40s. Temperature rising into the lower 50s after midnight. Chance of rain 30 percent.
THURSDAY
Mostly cloudy with a chance of rain in the morning, then mostly sunny with a slight chance of rain in the afternoon. Highs in the upper 50s. Temperature falling into the upper 40s in the afternoon. Chance of rain 50 percent.
THURSDAY NIGHT AND FRIDAY
Partly cloudy. Lows in the mid 20s. Highs in the lower 40s.
FRIDAY NIGHT
Mostly cloudy. Lows in the mid 30s. Temperature rising to around 40 after midnight.
SATURDAY
Partly sunny with a 20 percent chance of rain. Not as cool with highs in the mid 50s.

Visible Weather Satellite
SOUTHERN ILLINOIS UNIVERSITY, IL 62026
Infrared Weather Satellite
SOUTHERN ILLINOIS UNIVERSITY, IL 62026
NEXRAD Weather Radar
SOUTHERN ILLINOIS UNIVERSITY, IL 62026

ALTON, IL 3 hourly weather forecast

weather forecast created  5:00 PM MST 12/13/2025
Sunday
14 DEC 2025
SOUTHERN ILLINOIS UNIVERSITY, IL 62026 weather forecast Day 1, 0 hours 12 AM -6° Partly Cloudy 0%

0% Thunder
( 0% severe)
NNW   12 65%
Low 3° SOUTHERN ILLINOIS UNIVERSITY, IL 62026 weather forecast Day 1, 3 hours 3 AM -9° Clear NNW   13 62% -2°
High 12° SOUTHERN ILLINOIS UNIVERSITY, IL 62026 weather forecast Day 1, 6 hours 6 AM -12° Clear 0%

0% Thunder
( 0% severe)
NNW   13 62% -4°

Clear



SOUTHERN ILLINOIS UNIVERSITY, IL 62026 weather forecast Day 1, 9 hours 9 AM -12° Clear NNW   12 58% -6°
SOUTHERN ILLINOIS UNIVERSITY, IL 62026 weather forecast Day 1, 12 hours 12 PM -4° Clear 0%

0% Thunder
( 0% severe)
NNW   9 42% -7°
SOUTHERN ILLINOIS UNIVERSITY, IL 62026 weather forecast Day 1, 15 hours 3 PM 12° Clear NNW   7 38% -6°
SOUTHERN ILLINOIS UNIVERSITY, IL 62026 weather forecast Day 1, 18 hours 6 PM Clear 0%

0% Thunder
( 0% severe)
NNE   3 53% -3°
SOUTHERN ILLINOIS UNIVERSITY, IL 62026 weather forecast Day 1, 21 hours 9 PM Clear ESE   3 62% -2°
Monday
15 DEC 2025
SOUTHERN ILLINOIS UNIVERSITY, IL 62026 weather forecast Day 2, 0 hours 12 AM -2° Clear 0%

0% Thunder
( 0% severe)
S   5 62% -2°
Low 6° SOUTHERN ILLINOIS UNIVERSITY, IL 62026 weather forecast Day 2, 3 hours 3 AM -3° Clear S   8 56% -2°
High 39° SOUTHERN ILLINOIS UNIVERSITY, IL 62026 weather forecast Day 2, 6 hours 6 AM 11° -3° Clear 0%

0% Thunder
( 0% severe)
S   10 50% -2°

Clear



SOUTHERN ILLINOIS UNIVERSITY, IL 62026 weather forecast Day 2, 9 hours 9 AM 19° Clear S   13 38%
SOUTHERN ILLINOIS UNIVERSITY, IL 62026 weather forecast Day 2, 12 hours 12 PM 32° 22° Clear 0%

0% Thunder
( 0% severe)
SSW   14 23%
SOUTHERN ILLINOIS UNIVERSITY, IL 62026 weather forecast Day 2, 15 hours 3 PM 38° 30° Partly Cloudy SW   12 27%
SOUTHERN ILLINOIS UNIVERSITY, IL 62026 weather forecast Day 2, 18 hours 6 PM 32° 26° Partly Cloudy 0%

0% Thunder
( 0% severe)
SSW   7 44% 14°
SOUTHERN ILLINOIS UNIVERSITY, IL 62026 weather forecast Day 2, 21 hours 9 PM 29° 24° Partly Cloudy SW   5 58% 17°

ALTON, IL extended weather forecast

Tuesday
16 DEC 2025
Wednesday
17 DEC 2025
Thursday
18 DEC 2025
Friday
19 DEC 2025
Saturday
20 DEC 2025
Low 19° Low 31° Low 40° Low 21° Low 31°
High 49° High 49° High 46° High 39° High 49°
SOUTHERN ILLINOIS UNIVERSITY, IL 62026 weather forecast Day 3 SOUTHERN ILLINOIS UNIVERSITY, IL 62026 weather forecast Day 4 SOUTHERN ILLINOIS UNIVERSITY, IL 62026 weather forecast Day 5 SOUTHERN ILLINOIS UNIVERSITY, IL 62026 weather forecast Day 6 SOUTHERN ILLINOIS UNIVERSITY, IL 62026 weather forecast Day 7
Clear
3% Rain/Ice
Clear
9% Rain
Overcast
77% Rain
Clear
10% Snow
Mostly Cloudy
21% Rain/Ice
SELECT BOX EXAMPLES:
for LOCAL WEATHER:
SNOW DEPTH:
LOCAL WEATHER RADAR:
STATE WEATHER MAP:
Southern Illinois University, IL
Southern Illinois University, IL snow
Southern Illinois University, IL radar
IL map
-or-
-or-
-or-
 
62026
62026 snow
62026 radar
 
-or-
-or-
 
 
IL
IL snow
 
 
Copyright © 2024 WeatherStreet.com
Put our free WeatherStreet weather lookup on your web page.
Terms & Conditions