Weather Forecast and Conditions for Alton, IL
Today: Sunny to partly cloudy, breezy and very warm
Tonight: A thunderstorm in parts of the area this evening; otherwise, partly cloudy; gusty winds can accompany any downpour
Updated
May 12,
3:42 PM
Stay Informed with Weather Alerts!
Text @RB to 618-202-4618 to sign up for instant weather updates.
Sign Up Now
AirQuality
55
Moderate
Grass
2
Low
Mold
3250
Low
Ragweed
5
Low
Tree
750
High
UVIndex
10
Very High
Tuesday
05/12
25%
82° /
54°
↓
Day: Mostly sunny
Sunny to partly cloudy, breezy and very warm
Precipitation Chance: 25%
Sunrise:
5:51 AM
Sunset:
8:03 PM
Wind: WSW 11.5 mph
Humidity: 42%
Night: Partly cloudy w/ t-storms
A thunderstorm in parts of the area this evening; otherwise, partly cloudy; gusty winds can accompany any downpour
Precipitation Chance: 55%
Moon Phase: WaningCrescent
Wind: WNW 6.9 mph
Humidity: 64%
Wednesday
05/13
2%
73° /
46°
↓
Day: Mostly sunny
Mostly sunny, breezy and pleasant
Precipitation Chance: 2%
Sunrise:
5:50 AM
Sunset:
8:04 PM
Wind: NNW 13.8 mph
Humidity: 39%
Night: Clear
Clear
Precipitation Chance: 0%
Moon Phase: WaningCrescent
Wind: NNE 4.6 mph
Humidity: 66%
Thursday
05/14
2%
73° /
54°
↓
Day: Sunny
Plenty of sunshine
Precipitation Chance: 2%
Sunrise:
5:49 AM
Sunset:
8:05 PM
Wind: SE 6.9 mph
Humidity: 41%
Night: Mostly cloudy w/ t-storms
Increasing clouds with a thunderstorm toward dawn
Precipitation Chance: 55%
Moon Phase: WaningCrescent
Wind: SE 8.1 mph
Humidity: 64%
Friday
05/15
75%
83° /
66°
↓
Day: Showers
Periods of rain and a thunderstorm in the morning; mostly cloudy and very warm
Precipitation Chance: 75%
Sunrise:
5:48 AM
Sunset:
8:06 PM
Wind: SE 11.5 mph
Humidity: 56%
Night: Thunderstorms
Mostly cloudy and warm; a couple of showers and a heavy thunderstorm late
Precipitation Chance: 77%
Moon Phase: WaningCrescent
Wind: E 8.1 mph
Humidity: 75%
Saturday
05/16
88%
79° /
63°
↓
Day: Thunderstorms
Cloudy and humid with a couple of showers and a thunderstorm
Precipitation Chance: 88%
Sunrise:
5:48 AM
Sunset:
8:07 PM
Wind: S 4.6 mph
Humidity: 67%
Night: Thunderstorms
A couple of thunderstorms in the evening; otherwise, rather cloudy
Precipitation Chance: 66%
Moon Phase: New
Wind: SE 9.2 mph
Humidity: 83%
