EAST ALTON, IL 62024 Weather Forecast & Current Conditions

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ALTON, IL
Current Weather

5:35 AM CDT MAR 21, 2026
Clear
48°F
Feels Like: 48°F
Dewpoint: 45°F
Rel. Hum.: 89%
Visibility: 10 miles
Wind: Calm
Pressure: 29.88 inches
Last 72 hours

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EAST ALTON, IL 62024
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TODAY
Sunny. Highs in the upper 80s. Southeast winds around 5 mph, becoming south around 5 mph this afternoon.
TONIGHT
Mostly clear. Not as cool with lows in the lower 60s. South winds 5 to 10 mph.
SUNDAY
Sunny in the morning, then becoming partly sunny. Highs in the upper 80s. Southwest winds 10 to 15 mph, becoming west 15 to 20 mph with gusts up to 30 mph in the afternoon.
SUNDAY NIGHT
Mostly cloudy with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Breezy and much cooler with lows in the upper 30s. North winds 15 to 25 mph, diminishing to 10 to 15 mph after midnight. Chance of rain 20 percent.
MONDAY
Mostly sunny. Much cooler with highs in the upper 50s. Northeast winds 5 to 10 mph.
MONDAY NIGHT AND TUESDAY
Mostly cloudy. Lows in the lower 40s. Highs in the lower 60s.
TUESDAY NIGHT
Mostly cloudy with a 20 percent chance of showers. Lows in the mid 40s.
WEDNESDAY
Partly sunny. A slight chance of showers and thunderstorms in the morning. Not as cool with highs in the lower 70s. Chance of rain 20 percent.
WEDNESDAY NIGHT AND THURSDAY
Partly cloudy. A 20 percent chance of showers. Lows in the mid 50s. Highs in the lower 80s.
THURSDAY NIGHT
A slight chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Cooler with lows in the mid 40s. Chance of rain 40 percent.
FRIDAY
Partly sunny. A chance of showers, mainly in the morning. Much cooler with highs in the upper 50s. Chance of rain 40 percent.

Visible Weather Satellite
EAST ALTON, IL 62024
Infrared Weather Satellite
EAST ALTON, IL 62024
NEXRAD Weather Radar
EAST ALTON, IL 62024

ALTON, IL 3 hourly weather forecast

weather forecast created  5:00 PM MST  3/20/2026
Saturday
21 MAR 2026
EAST ALTON, IL 62024 weather forecast Day 1, 0 hours 12 AM 59° 60° Partly Cloudy 2%

0% Thunder
( 6% severe)
ENE   2 64% 47°
Low 51° EAST ALTON, IL 62024 weather forecast Day 1, 3 hours 3 AM 55° 55° Clear E   2 74% 47°
High 83° EAST ALTON, IL 62024 weather forecast Day 1, 6 hours 6 AM 52° 52° Clear 2%

0% Thunder
( 3% severe)
E   2 83% 47°

Clear



EAST ALTON, IL 62024 weather forecast Day 1, 9 hours 9 AM 64° 65° Clear SE   5 63% 51°
EAST ALTON, IL 62024 weather forecast Day 1, 12 hours 12 PM 78° 79° Clear 1%

0% Thunder
( 3% severe)
S   6 40% 52°
EAST ALTON, IL 62024 weather forecast Day 1, 15 hours 3 PM 83° 82° Clear SSW   7 33% 51°
EAST ALTON, IL 62024 weather forecast Day 1, 18 hours 6 PM 76° 78° Clear 1%

0% Thunder
( 4% severe)
S   6 45% 53°
EAST ALTON, IL 62024 weather forecast Day 1, 21 hours 9 PM 68° 68° Clear S   8 61% 54°
Sunday
22 MAR 2026
EAST ALTON, IL 62024 weather forecast Day 2, 0 hours 12 AM 65° 65° Clear 1%

0% Thunder
( 2% severe)
SSW   8 68% 54°
Low 61° EAST ALTON, IL 62024 weather forecast Day 2, 3 hours 3 AM 63° 62° Partly Cloudy SSW   9 72% 54°
High 83° EAST ALTON, IL 62024 weather forecast Day 2, 6 hours 6 AM 62° 61° Clear 1%

0% Thunder
( 5% severe)
SSW   9 75% 54°

Increasing Clouds



EAST ALTON, IL 62024 weather forecast Day 2, 9 hours 9 AM 74° 74° Partly Cloudy SW   12 55% 57°
EAST ALTON, IL 62024 weather forecast Day 2, 12 hours 12 PM 82° 82° Partly Cloudy 11%
RAIN
<.01 in
0% Thunder
( 18% severe)
WSW   13 41% 56°
EAST ALTON, IL 62024 weather forecast Day 2, 15 hours 3 PM 78° 79° Mostly Cloudy NNW   16 40% 52°
EAST ALTON, IL 62024 weather forecast Day 2, 18 hours 6 PM 65° 65° Mostly Cloudy 14%
RAIN
<.01 in
0% Thunder
( 3% severe)
N   20 46% 44°
EAST ALTON, IL 62024 weather forecast Day 2, 21 hours 9 PM 54° 49° Partly Cloudy N   17 57% 39°

ALTON, IL extended weather forecast

Monday
23 MAR 2026
Tuesday
24 MAR 2026
Wednesday
25 MAR 2026
Thursday
26 MAR 2026
Friday
27 MAR 2026
Low 39° Low 37° Low 42° Low 56° Low 45°
High 53° High 59° High 70° High 74° High 51°
EAST ALTON, IL 62024 weather forecast Day 3 EAST ALTON, IL 62024 weather forecast Day 4 EAST ALTON, IL 62024 weather forecast Day 5 EAST ALTON, IL 62024 weather forecast Day 6 EAST ALTON, IL 62024 weather forecast Day 7
Clear
14% Rain
Partly Cloudy
11% Rain
Partly Cloudy
21% Rain
Partly Cloudy
37% Rain
Overcast
66% Rain
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