Current Weather Forecast for Alton

IL 62002  |   1:35pm

Weather Conditions

58°

Feels Like 56°

Cloudy

44° 67°

1

UV Index

Moderate

Air Quality

SE 10 mph

Wind

0.12 in

rain

Today

Thu 2/19

67°

Highest Temperature

23%

Generally cloudy. A stray shower or thunderstorm is possible. High 67F. Winds S at 10 to 15 mph.

Tonight

Thu 2/19

30°

Lowest Temperature

2%

Windy with a few clouds. Low around 30F. Winds W at 20 to 30 mph.

Tomorrow

Fri 2/20

44°

Highest Temperature

2%

Partly cloudy skies. High 44F. Winds WNW at 15 to 25 mph.

Next 12 Hours Next 7 Days

Next 12 Hours Forecast in Alton

Hourly Weather Forecast & Temperature

2PM

15%

59°

Feels Like 57°

Cloudy

SSE 11 mph

Wind

997 mb

Pressure

87%

Humidity

1

UV Index

10mi

Visibility

94%

Cloud Cover

3PM

24%

61°

Feels Like 59°

Mostly Cloudy

SSE 11 mph

Wind

996 mb

Pressure

83%

Humidity

1

UV Index

10mi

Visibility

79%

Cloud Cover

4PM

44%

61°

Feels Like 60°

Showers

SSE 10 mph

Wind

996 mb

Pressure

81%

Humidity

0

UV Index

0.8mi

Visibility

66%

Cloud Cover

5PM

7%

65°

Feels Like 64°

Partly Cloudy

SSE 10 mph

Wind

995 mb

Pressure

64%

Humidity

0

UV Index

10mi

Visibility

38%

Cloud Cover

6PM

3%

62°

Feels Like 61°

Mostly Clear

S 8 mph

Wind

996 mb

Pressure

66%

Humidity

0

UV Index

10mi

Visibility

29%

Cloud Cover

7PM

1%

59°

Feels Like 57°

Clear

SW 11 mph

Wind

996 mb

Pressure

65%

Humidity

0

UV Index

10mi

Visibility

12%

Cloud Cover

8PM

1%

57°

Feels Like 54°

Clear

WSW 13 mph

Wind

997 mb

Pressure

54%

Humidity

0

UV Index

10mi

Visibility

9%

Cloud Cover

9PM

55°

Feels Like 51°

Clear

WSW 16 mph

Wind

998 mb

Pressure

47%

Humidity

0

UV Index

10mi

Visibility

5%

Cloud Cover

10PM

53°

Feels Like 47°

Clear

WSW 19 mph

Wind

1000 mb

Pressure

50%

Humidity

0

UV Index

10mi

Visibility

7%

Cloud Cover

11PM

1%

49°

Feels Like 43°

Clear/Wind

W 20 mph

Wind

1001 mb

Pressure

53%

Humidity

0

UV Index

10mi

Visibility

15%

Cloud Cover

12AM

1%

45°

Feels Like 37°

Partly Cloudy/Wind

W 20 mph

Wind

1002 mb

Pressure

54%

Humidity

0

UV Index

10mi

Visibility

44%

Cloud Cover

1AM

2%

41°

Feels Like 32°

Mostly Cloudy/Wind

W 20 mph

Wind

1003 mb

Pressure

56%

Humidity

0

UV Index

10mi

Visibility

62%

Cloud Cover

Thu 2/19

Thu

23%

44°

67°

Cloudy. Highs in the upper 60s and lows in the low 30s.

67°

Feels Like

S 11 mph

Wind

73%

Humidity

1

UV Index

6:46 AM

Sunrise

5:43 PM

Sunset

Fri 2/20

Fri

2%

30°

46°

Mix of sun and clouds. Highs in the mid 40s and lows in the upper 20s.

19°

Feels Like

WNW 19 mph

Wind

47%

Humidity

4

UV Index

6:45 AM

Sunrise

5:44 PM

Sunset

Sat 2/21

Sat

9%

27°

42°

Partly cloudy. Highs in the low 40s and lows in the low 20s.

20°

Feels Like

NW 14 mph

Wind

50%

Humidity

4

UV Index

6:44 AM

Sunrise

5:45 PM

Sunset

Sun 2/22

Sun

20°

35°

Mainly sunny. Highs in the mid 30s and lows in the upper teens.

12°

Feels Like

NW 19 mph

Wind

43%

Humidity

4

UV Index

6:42 AM

Sunrise

5:46 PM

Sunset

Mon 2/23

Mon

17°

34°

Mainly sunny. Highs in the mid 30s and lows in the upper teens.

5°

Feels Like

NNW 12 mph

Wind

41%

Humidity

4

UV Index

6:41 AM

Sunrise

5:47 PM

Sunset

Tue 2/24

Tue

19°

50°

Mostly cloudy. Highs in the low 50s and lows in the low 40s.

13°

Feels Like

S 16 mph

Wind

39%

Humidity

3

UV Index

6:39 AM

Sunrise

5:48 PM

Sunset

Wed 2/25

Wed

8%

37°

60°

Morning clouds followed by afternoon sun. Highs in the low 60s and lows in the low 30s.

38°

Feels Like

W 12 mph

Wind

50%

Humidity

3

UV Index

6:38 AM

Sunrise

5:49 PM

Sunset

Thu 2/26

Thu

19%

31°

49°

Mix of sun and clouds. Highs in the upper 40s and lows in the low 30s.

26°

Feels Like

NE 10 mph

Wind

55%

Humidity

4

UV Index

6:37 AM

Sunrise

5:50 PM

Sunset

Need to see beyond 12 Hours?

Find more forecast on the FREE FOX WEATHER App

GO TO APP STORE

Latest Stories from Illinois

Dangerous tornado threat looms for millions across Ohio Valley tonight in highest severe storm threat of 2026

The SPC said there is a heightened potential for tornadoes, some of which could reach EF2 or stronger.

Meet The Great Lake Jumper: The Chicago resident that has plunged into Lake Michigan for 2,000+ days straight

Through every season, since the summer of 2020, Dan O'Conor has plunged into Lake Michigan, or another natural body of water, earning him the deserving nickname, the Great Lake Jumper.

See it: Fireball caught streaking across night sky in multiple Midwest states on Tuesday

More than 100 people witnessed a fireball shooting through the sky late Tuesday night in at least five different states in the Central U.S.

Next round of snow begins across winter-weary East, late-week storm could cause travel trouble

A stronger clipper is expected to move across the Great Lakes and Northeast late Thursday, with parts of the Interstate 95 corridor likely seeing snow beginning sometime Friday afternoon into early Saturday.

Load More Stories