BRIGHTON, IL 62012 Weather Forecast & Current Conditions

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ALTON, IL
Current Weather

1:15 AM CDT MAY 6, 2025
Clear
48°F
Feels Like: 48°F
Dewpoint: 48°F
Rel. Hum.: 100%
Visibility: 10 miles
Wind: Calm
Pressure: 30.02 inches
Last 72 hours

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BRIGHTON, IL 62012
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
REST OF TONIGHT
Clear. Patchy fog. Near steady temperature in the upper 40s. West winds around 5 mph.
TUESDAY
Patchy fog in the morning. Sunny. Highs in the lower 70s. Northwest winds around 5 mph, becoming south in the afternoon.
TUESDAY NIGHT
Partly cloudy. Lows in the lower 50s. Southeast winds around 5 mph.
WEDNESDAY
Mostly cloudy with a slight chance of showers in the morning, then partly sunny in the afternoon. Highs in the lower 70s. East winds around 5 mph. Chance of rain 20 percent.
WEDNESDAY NIGHT
Mostly cloudy with a 20 percent chance of showers. Lows in the lower 50s. Northeast winds 5 to 10 mph.
THURSDAY
Mostly sunny. A slight chance of showers in the afternoon. Highs in the mid 70s. Chance of rain 20 percent.
THURSDAY NIGHT AND FRIDAY
Partly cloudy. Lows in the mid 40s. Highs in the upper 60s.
FRIDAY NIGHT AND SATURDAY
Mostly clear. Lows in the mid 40s. Highs in the mid 70s.
SATURDAY NIGHT THROUGH MONDAY
Mostly clear. Lows in the lower 50s. Highs in the upper 70s.

Visible Weather Satellite
BRIGHTON, IL 62012
Infrared Weather Satellite
BRIGHTON, IL 62012
NEXRAD Weather Radar
BRIGHTON, IL 62012

ALTON, IL 3 hourly weather forecast

weather forecast created  6:00 PM MDT  5/ 5/2025
Tuesday
6 MAY 2025
BRIGHTON, IL 62012 weather forecast Day 1, 0 hours 1 AM 50° 50° Clear 0%

0% Thunder
( 1% severe)
  CALM 89% 47°
Low 47° BRIGHTON, IL 62012 weather forecast Day 1, 3 hours 4 AM 48° 47° Partly Cloudy   CALM 93% 46°
High 70° BRIGHTON, IL 62012 weather forecast Day 1, 6 hours 7 AM 49° 49° Partly Cloudy 0%

0% Thunder
( 2% severe)
NW   1 89% 46°

Partly Cloudy



BRIGHTON, IL 62012 weather forecast Day 1, 9 hours 10 AM 61° 62° Partly Cloudy NW   2 67% 50°
BRIGHTON, IL 62012 weather forecast Day 1, 12 hours 1 PM 67° 67° Partly Cloudy 0%

0% Thunder
( 1% severe)
S   1 52% 49°
BRIGHTON, IL 62012 weather forecast Day 1, 15 hours 4 PM 69° 69° Partly Cloudy SSE   2 49% 49°
BRIGHTON, IL 62012 weather forecast Day 1, 18 hours 7 PM 68° 68° Partly Cloudy 0%

0% Thunder
( 1% severe)
SE   3 53% 50°
BRIGHTON, IL 62012 weather forecast Day 1, 21 hours 10 PM 59° 60° Mostly Cloudy SSE   1 75% 51°
Wednesday
7 MAY 2025
BRIGHTON, IL 62012 weather forecast Day 2, 0 hours 1 AM 55° 55° Mostly Cloudy 2%

0% Thunder
( 1% severe)
SE   1 83% 50°
Low 52° BRIGHTON, IL 62012 weather forecast Day 2, 3 hours 4 AM 53° 53° Mostly Cloudy   CALM 86% 49°
High 72° BRIGHTON, IL 62012 weather forecast Day 2, 6 hours 7 AM 54° 54° Mostly Cloudy 9%

0% Thunder
( 5% severe)
ENE   2 86% 50°

Mostly Cloudy



BRIGHTON, IL 62012 weather forecast Day 2, 9 hours 10 AM 64° 65° Mostly Cloudy E   3 67% 53°
BRIGHTON, IL 62012 weather forecast Day 2, 12 hours 1 PM 70° 70° Mostly Cloudy 7%

0% Thunder
( 12% severe)
ESE   6 53% 52°
BRIGHTON, IL 62012 weather forecast Day 2, 15 hours 4 PM 70° 70° Mostly Cloudy ESE   5 53% 52°
BRIGHTON, IL 62012 weather forecast Day 2, 18 hours 7 PM 68° 68° Mostly Cloudy 8%

0% Thunder
( 15% severe)
E   3 61% 54°
BRIGHTON, IL 62012 weather forecast Day 2, 21 hours 10 PM 61° 62° Mostly Cloudy E   1 78% 54°

ALTON, IL extended weather forecast

Thursday
8 MAY 2025
Friday
9 MAY 2025
Saturday
10 MAY 2025
Sunday
11 MAY 2025
Monday
12 MAY 2025
Low 55° Low 50° Low 46° Low 49° Low 58°
High 66° High 71° High 73° High 75° High 75°
BRIGHTON, IL 62012 weather forecast Day 3 BRIGHTON, IL 62012 weather forecast Day 4 BRIGHTON, IL 62012 weather forecast Day 5 BRIGHTON, IL 62012 weather forecast Day 6 BRIGHTON, IL 62012 weather forecast Day 7
Overcast
69% Rain
Mostly Cloudy
18% Rain
Clear
Partly Cloudy
20% Rain
Overcast
50% Rain
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