Alton, IL

Right Now
79°
Cloudy
  • Humidity: 73%
  • Feels Like: 83°
  • Heat Index: 83°
  • Wind: 12 mph
  • Wind Chill: 79°
  • UV Index: 6 High
  • Sunrise: 06:47:02 AM
  • Sunset: 07:00:21 PM
  • Dew Point: 69°
  • Visibility: 10 mi

Today

Mostly cloudy skies this morning will become partly cloudy this afternoon. High near 85F. Winds S at 10 to 20 mph.

Tonight

Some clouds early with showers likely late, and a thunderstorm is possible. Low around 65F. Winds SSW at 10 to 20 mph. Chance of rain 70%.

Tomorrow

Cloudy with occasional light rain...mainly in the morning. Cooler. High around 70F. Winds NNW at 10 to 20 mph. Chance of rain 70%.

Day
Temp
Mon
65°
85°
Mon
85°/65°
Times of sun and clouds. Highs in the mid 80s and lows in the mid 60s.

Chance of Rain: 9%

Sunrise: 06:47:02 AM

Sunset: 07:00:21 PM

Humidity: 61%

Wind: S @ 14mph

UV Index: 6 High

Monday Night

Some clouds early with showers likely late, and a thunderstorm is possible. Low around 65F. Winds SSW at 10 to 20 mph. Chance of rain 70%.

Tue
53°
70°
Tue
70°/53°
Morning light rain. Highs in the low 70s and lows in the low 50s.

Chance of Rain: 66%

Sunrise: 06:47:55 AM

Sunset: 06:58:46 PM

Humidity: 70%

Wind: NNW @ 15mph

UV Index: 4 Moderate

Tuesday Night

Partly cloudy skies. Low 53F. Winds NNW at 10 to 15 mph.

Wed
48°
72°
Wed
72°/48°
Mainly sunny. Highs in the low 70s and lows in the upper 40s.

Chance of Rain: 4%

Sunrise: 06:48:49 AM

Sunset: 06:57:12 PM

Humidity: 49%

Wind: NNW @ 15mph

UV Index: 6 High

Wednesday Night

A few clouds from time to time. Low 48F. Winds NNW at 5 to 10 mph.

Thu
50°
74°
Thu
74°/50°
Abundant sunshine. Highs in the low 70s and lows in the low 50s.

Chance of Rain: 9%

Sunrise: 06:49:43 AM

Sunset: 06:55:37 PM

Humidity: 46%

Wind: NW @ 9mph

UV Index: 6 High

Thursday Night

Clear skies. Low around 50F. Winds light and variable.

Fri
53°
81°
Fri
81°/53°
A few clouds. Highs in the low 80s and lows in the low 50s.

Chance of Rain: 4%

Sunrise: 06:50:37 AM

Sunset: 06:54:03 PM

Humidity: 45%

Wind: SSW @ 13mph

UV Index: 6 High

Friday Night

Partly to mostly cloudy. Low 53F. Winds NW at 5 to 10 mph.

Sat
51°
76°
Sat
76°/51°
Mix of sun and clouds. Highs in the mid 70s and lows in the low 50s.

Chance of Rain: 4%

Sunrise: 06:51:31 AM

Sunset: 06:52:28 PM

Humidity: 42%

Wind: NW @ 11mph

UV Index: 6 High

Saturday Night

A mostly clear sky. Low 51F. Winds light and variable.

Sun
54°
79°
Sun
79°/54°
Sunshine. Highs in the upper 70s and lows in the mid 50s.

Chance of Rain: 4%

Sunrise: 06:52:25 AM

Sunset: 06:50:54 PM

Humidity: 44%

Wind: SSW @ 10mph

UV Index: 6 High

Sunday Night

Clear. Low 54F. Winds S at 5 to 10 mph.