PONTOON BEACH, IL 62040 Weather Forecast & Current Conditions

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ALTON, IL
Current Weather

3:15 AM CDT MAY 5, 2025
Overcast
50°F
Feels Like: 50°F
Dewpoint: 46°F
Rel. Hum.: 86%
Visibility: 10 miles
Wind: WNW at 3 mph
Pressure: 29.92 inches
Last 72 hours

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PONTOON BEACH, IL 62040
Weather Forecast

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Snow Depth pages
REST OF TONIGHT
Mostly cloudy. Lows in the upper 40s. Northeast winds around 5 mph with gusts up to 20 mph, becoming northwest around 5 mph.
MONDAY
Mostly cloudy. A slight chance of showers in the morning. Highs in the lower 60s. North winds 5 to 10 mph. Chance of rain 20 percent.
MONDAY NIGHT
Mostly cloudy in the evening, then clearing. Lows in the upper 40s. North winds around 5 mph, becoming west after midnight.
TUESDAY
Mostly sunny. Not as cool with highs in the lower 70s. West winds around 5 mph, becoming southeast in the afternoon.
TUESDAY NIGHT
Mostly cloudy. A slight chance of showers after midnight. Lows in the mid 50s. East winds around 5 mph. Chance of rain 20 percent.
WEDNESDAY
Mostly cloudy with a 50 percent chance of showers. Highs around 70.
WEDNESDAY NIGHT AND THURSDAY
Mostly cloudy. A 40 percent chance of showers. Lows in the mid 50s. Highs in the lower 70s.
THURSDAY NIGHT
Mostly cloudy in the evening, then becoming partly cloudy. A slight chance of thunderstorms in the evening. A slight chance of showers. Lows in the lower 50s. Chance of rain 20 percent.
FRIDAY
Mostly sunny with a 20 percent chance of showers. Highs in the lower 70s.
FRIDAY NIGHT
Partly cloudy. Lows around 50.
SATURDAY
Mostly sunny with a 20 percent chance of showers. Highs in the mid 70s.
SATURDAY NIGHT
Mostly clear. Lows in the lower 50s.
SUNDAY
Sunny. A slight chance of showers in the afternoon. Highs in the upper 70s. Chance of rain 20 percent.

Visible Weather Satellite
PONTOON BEACH, IL 62040
Infrared Weather Satellite
PONTOON BEACH, IL 62040
NEXRAD Weather Radar
PONTOON BEACH, IL 62040

ALTON, IL 3 hourly weather forecast

weather forecast created  6:00 PM MDT  5/ 4/2025
Monday
5 MAY 2025
PONTOON BEACH, IL 62040 weather forecast Day 1, 0 hours 1 AM 48° 47° Mostly Cloudy 9%

0% Thunder
( 2% severe)
NNW   3 83% 43°
Low 47° PONTOON BEACH, IL 62040 weather forecast Day 1, 3 hours 4 AM 49° 47° Mostly Cloudy NW   5 83% 44°
High 62° PONTOON BEACH, IL 62040 weather forecast Day 1, 6 hours 7 AM 49° 47° Mostly Cloudy 13%
RAIN
<.01 in
0% Thunder
( 5% severe)
NNW   6 86% 45°

Mostly Cloudy



PONTOON BEACH, IL 62040 weather forecast Day 1, 9 hours 10 AM 54° 52° Mostly Cloudy N   8 74% 46°
PONTOON BEACH, IL 62040 weather forecast Day 1, 12 hours 1 PM 59° 58° Mostly Cloudy 6%

0% Thunder
( 10% severe)
N   8 64% 47°
PONTOON BEACH, IL 62040 weather forecast Day 1, 15 hours 4 PM 61° 61° Mostly Cloudy N   6 62% 48°
PONTOON BEACH, IL 62040 weather forecast Day 1, 18 hours 7 PM 61° 62° Partly Cloudy 3%

0% Thunder
( 3% severe)
WNW   3 62% 48°
PONTOON BEACH, IL 62040 weather forecast Day 1, 21 hours 10 PM 54° 54° Partly Cloudy NNW   1 83% 49°
Tuesday
6 MAY 2025
PONTOON BEACH, IL 62040 weather forecast Day 2, 0 hours 1 AM 50° 50° Partly Cloudy 0%

0% Thunder
( 1% severe)
  CALM 93% 48°
Low 47° PONTOON BEACH, IL 62040 weather forecast Day 2, 3 hours 4 AM 48° 47° Partly Cloudy   CALM 93% 46°
High 71° PONTOON BEACH, IL 62040 weather forecast Day 2, 6 hours 7 AM 49° 49° Partly Cloudy 0%

0% Thunder
( 1% severe)
W   1 93% 47°

Partly Cloudy



PONTOON BEACH, IL 62040 weather forecast Day 2, 9 hours 10 AM 60° 61° Clear WNW   2 69% 50°
PONTOON BEACH, IL 62040 weather forecast Day 2, 12 hours 1 PM 68° 68° Partly Cloudy 0%

0% Thunder
( 2% severe)
W   2 51% 49°
PONTOON BEACH, IL 62040 weather forecast Day 2, 15 hours 4 PM 70° 70° Partly Cloudy SSE   2 47% 49°
PONTOON BEACH, IL 62040 weather forecast Day 2, 18 hours 7 PM 68° 68° Partly Cloudy 3%

0% Thunder
( 1% severe)
SSE   3 54% 51°
PONTOON BEACH, IL 62040 weather forecast Day 2, 21 hours 10 PM 59° 60° Mostly Cloudy ESE   2 75% 51°

ALTON, IL extended weather forecast

Wednesday
7 MAY 2025
Thursday
8 MAY 2025
Friday
9 MAY 2025
Saturday
10 MAY 2025
Sunday
11 MAY 2025
Low 49° Low 51° Low 45° Low 42° Low 48°
High 75° High 71° High 68° High 72° High 73°
PONTOON BEACH, IL 62040 weather forecast Day 3 PONTOON BEACH, IL 62040 weather forecast Day 4 PONTOON BEACH, IL 62040 weather forecast Day 5 PONTOON BEACH, IL 62040 weather forecast Day 6 PONTOON BEACH, IL 62040 weather forecast Day 7
Partly Cloudy
14% Rain
Mostly Cloudy
20% Rain
Clear
3% Rain
Clear
Clear
7% Rain
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