PIASA, IL 62079 Weather Forecast & Current Conditions
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  62079 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)
 CURRENT WEATHER

ALTON, IL
Current Weather
4:55 AM CDT JUN 9, 2026
Overcast
75°F
Feels Like: 75°F
Dewpoint: 73°F
Rel. Hum.: 94%
Visibility: 10 miles
Wind: S at 3 mph
Pressure:
Last 72 hours

Local Area Snow Depth

Illinois Current Weather

Illinois MOS Forecast Weather


Weather Map

(Automated weather data from NWS/FAA)
  62079 WEATHER FORECAST
10-Day model forecast maps
2025 Hurricanes

PIASA, IL 62079
Weather Forecast

 Snowfall Forecast pages
Snow Depth pages
TODAY
Mostly cloudy with a chance of showers with a slight chance of thunderstorms this morning, then partly sunny this afternoon. Some thunderstorms may produce heavy rainfall this morning. Highs in the upper 80s. Southwest winds 5 to 10 mph. Chance of rain 50 percent. Heat index values up to 103 this afternoon.
TONIGHT
Mostly clear. Humid with lows in the lower 70s. Southwest winds 5 to 10 mph. Heat index values up to 104 early in the evening.
WEDNESDAY
Sunny with highs in the lower 90s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 100.
WEDNESDAY NIGHT
Mostly clear with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows in the lower 70s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent. Heat index values up to 101 early in the evening.
THURSDAY
Sunny. A chance of showers and thunderstorms in the afternoon. Humid with highs in the lower 90s. South winds 15 to 20 mph. Chance of rain 50 percent. Heat index values up to 102.
THURSDAY NIGHT
Showers likely with a chance of thunderstorms in the evening, then a slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 70 percent.
FRIDAY THROUGH SATURDAY
Mostly clear. Highs in the mid 80s. Lows in the lower 60s.
SATURDAY NIGHT
A chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows in the mid 60s. Chance of rain 50 percent.
SUNDAY
Partly sunny with a chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50 percent.
SUNDAY 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 upper 50s. Chance of rain 20 percent.
MONDAY
Mostly sunny. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 30 percent.

  62079 WEATHER SATELLITE LOOPS
Visible Weather Satellite
PIASA, IL 62079
Infrared Weather Satellite
PIASA, IL 62079
  62079 WEATHER RADAR LOOP
NEXRAD Weather Radar
PIASA, IL 62079
 MOS COMPUTER WEATHER FORECAST

ALTON, IL 3 hourly weather forecast
weather forecast created  6:00 PM MDT  6/ 8/2026
Tuesday
9 JUN 2026		 PIASA, IL 62079 weather forecast Day 1, 0 hours 1 AM 74° 74° Mostly Cloudy 59%
RAIN
***		 0% Thunder
( 23% severe)		 SSW   5 90% 71°
Low 72° PIASA, IL 62079 weather forecast Day 1, 3 hours 4 AM 73° 73° Mostly Cloudy SSW   5 90% 70°
High 91° PIASA, IL 62079 weather forecast Day 1, 6 hours 7 AM 74° 74° Mostly Cloudy 20%
RAIN
.01–.1 in		 0% Thunder
( 30% severe)		 S   5 93% 72°

Mostly Cloudy

Chance of Rain

 PIASA, IL 62079 weather forecast Day 1, 9 hours 10 AM 81° 86° Mostly Cloudy SW   10 77% 73°
PIASA, IL 62079 weather forecast Day 1, 12 hours 1 PM 87° 98° Mostly Cloudy 23%
RAIN
<.01 in		 0% Thunder
( 41% severe)		 SW   10 70% 76°
PIASA, IL 62079 weather forecast Day 1, 15 hours 4 PM 90° 102° Partly Cloudy SW   12 64% 76°
PIASA, IL 62079 weather forecast Day 1, 18 hours 7 PM 89° 102° Partly Cloudy 6%

 0% Thunder
( 19% severe)		 SSW   8 68% 77°
PIASA, IL 62079 weather forecast Day 1, 21 hours 10 PM 81° 87° Partly Cloudy S   6 82% 75°
Wednesday
10 JUN 2026		 PIASA, IL 62079 weather forecast Day 2, 0 hours 1 AM 79° 82° Clear 2%

 0% Thunder
( 7% severe)		 SSW   7 79% 72°
Low 73° PIASA, IL 62079 weather forecast Day 2, 3 hours 4 AM 76° 77° Clear SSW   7 82% 70°
High 92° PIASA, IL 62079 weather forecast Day 2, 6 hours 7 AM 77° 79° Clear 0%

 0% Thunder
( 9% severe)		 SSW   8 82% 71°

Clear



 PIASA, IL 62079 weather forecast Day 2, 9 hours 10 AM 84° 90° Clear SSW   13 67% 72°
PIASA, IL 62079 weather forecast Day 2, 12 hours 1 PM 90° 99° Clear 4%

 0% Thunder
( 37% severe)		 SSW   14 58% 73°
PIASA, IL 62079 weather forecast Day 2, 15 hours 4 PM 92° 99° Partly Cloudy SSW   16 51% 71°
PIASA, IL 62079 weather forecast Day 2, 18 hours 7 PM 90° 99° Clear 15%
RAIN
<.01 in		 0% Thunder
( 26% severe)		 S   15 58% 73°
PIASA, IL 62079 weather forecast Day 2, 21 hours 10 PM 82° 86° Partly Cloudy SSW   12 67% 70°

ALTON, IL extended weather forecast
Thursday
11 JUN 2026		 Friday
12 JUN 2026		 Saturday
13 JUN 2026		 Sunday
14 JUN 2026		 Monday
15 JUN 2026
Low 72° Low 65° Low 59° Low 65° Low 62°
High 93° High 82° High 84° High 78° High 76°
PIASA, IL 62079 weather forecast Day 3 PIASA, IL 62079 weather forecast Day 4 PIASA, IL 62079 weather forecast Day 5 PIASA, IL 62079 weather forecast Day 6 PIASA, IL 62079 weather forecast Day 7
Partly Cloudy
34% Rain		 Partly Cloudy
62% Rain		 Partly Cloudy
16% Rain		 Overcast
61% Rain		 Overcast
45% Rain
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