SOUTHERN ILLINOIS UNIVERSITY, IL 62026 Weather Forecast & Current Conditions

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62026 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
ALTON, IL Current Weather
10:55 PM CDT MAY 27, 2025
Overcast 70°F
Feels Like:	70°F
Dewpoint:	52°F
Rel. Hum.:	53%
Visibility:	10 miles
Wind:	Calm
Pressure:	30.01 inches
Last 72 hours
Local Area Snow Depth
Illinois Current Weather
Illinois MOS Forecast Weather

Regional Weather Maps

(Automated weather data from NWS/FAA)

62026 WEATHER FORECAST
10-Day model forecast maps 2024 Hurricanes	SOUTHERN ILLINOIS UNIVERSITY, IL 62026 Weather Forecast	Snowfall Forecast pages Snow Depth pages

REST OF TONIGHT
Cloudy with a chance of showers. A slight chance of thunderstorms. Lows in the upper 50s. Northwest winds around 5 mph. Chance of rain 50 percent.

WEDNESDAY
Mostly cloudy with a slight chance of showers in the morning, then partly sunny in the afternoon. Highs in the mid 70s. Northwest winds 5 to 10 mph. Chance of rain 20 percent.

WEDNESDAY NIGHT
Mostly cloudy. Lows in the upper 50s. West winds 5 to 10 mph.

THURSDAY
Partly sunny in the morning, then becoming mostly cloudy. A 50 percent chance of showers. Highs in the lower 70s. Northeast winds around 5 mph.

THURSDAY NIGHT
Mostly cloudy in the evening, then becoming partly cloudy. A 50 percent chance of showers. Lows in the mid 50s. Northwest winds around 5 mph.

FRIDAY
Mostly sunny. A slight chance of showers in the morning. Highs in the mid 70s. Chance of rain 20 percent.

FRIDAY NIGHT AND SATURDAY
Mostly clear. Lows in the upper 50s. Highs in the lower 80s.

SATURDAY NIGHT
Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the lower 60s. Chance of rain 20 percent.

SUNDAY
Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 20 percent.

SUNDAY NIGHT AND MONDAY
Mostly clear. Lows in the lower 60s. Highs in the mid 80s.

MONDAY NIGHT
Mostly clear. Lows in the mid 60s.

TUESDAY
Mostly sunny with a slight chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 20 percent.

62026 WEATHER SATELLITE LOOPS

Visible Weather Satellite
SOUTHERN ILLINOIS UNIVERSITY, IL 62026

Infrared Weather Satellite
SOUTHERN ILLINOIS UNIVERSITY, IL 62026

62026 WEATHER RADAR LOOP

NEXRAD Weather Radar
SOUTHERN ILLINOIS UNIVERSITY, IL 62026

MOS COMPUTER WEATHER FORECAST

ALTON, IL 3 hourly weather forecast

weather forecast created 6:00 AM MDT 5/27/2025

DAY/DATE &
WEATHER FORECAST SUMMARY

Tuesday
27 MAY 2025

1 PM

66°

66°

Mostly Cloudy

7%

0% Thunder
( 6% severe)

NNE 8

56%

50°

High 71°

4 PM

69°

69°

Mostly Cloudy

NNE 7

51%

50°

Mostly Cloudy

7 PM

70°

70°

Mostly Cloudy

14%
RAIN
<.01 in

0% Thunder
( 7% severe)

N 7

51%

51°

10 PM

63°

64°

Mostly Cloudy

N 3

67%

52°

Wednesday
28 MAY 2025

1 AM

60°

61°

Mostly Cloudy

42%
RAIN
***

0% Thunder
( 11% severe)

N 2

78%

53°

Low 56°

4 AM

58°

59°

Mostly Cloudy

NW 2

87%

54°

High 74°

7 AM

58°

58°

Mostly Cloudy

15%
RAIN
<.01 in

0% Thunder
( 7% severe)

NW 3

90%

55°

Mostly Cloudy

10 AM

65°

65°

Partly Cloudy

NW 6

70%

55°

1 PM

71°

71°

Partly Cloudy

5%

0% Thunder
( 10% severe)

NW 7

55%

54°

4 PM

73°

73°

Mostly Cloudy

WNW 6

49%

53°

7 PM

73°

73°

Partly Cloudy

1%

0% Thunder
( 4% severe)

NNW 5

49%

53°

10 PM

63°

64°

Partly Cloudy

NNW 1

72%

54°

Thursday
29 MAY 2025

1 AM

59°

60°

Partly Cloudy

6%

0% Thunder
( 3% severe)

N 1

83%

54°

Low 56°

4 AM

57°

58°

Mostly Cloudy

NE 2

86%

53°

High 71°

7 AM

58°

58°

Mostly Cloudy

29%
RAIN
***

0% Thunder
( 8% severe)

NE 3

87%

54°

Mostly Cloudy

Chance of Rain

10 AM

66°

66°

Mostly Cloudy

ENE 6

70%

56°

1 PM

68°

68°

Mostly Cloudy

32%
RAIN
***

0% Thunder
( 12% severe)

N 7

63%

55°

4 PM

68°

68°

Mostly Cloudy

N 7

63%

55°

7 PM

68°

68°

Mostly Cloudy

NNW 7

63%

55°


ALTON, IL extended weather forecast
Friday 30 MAY 2025	Saturday 31 MAY 2025	Sunday 1 JUN 2025	Monday 2 JUN 2025	Tuesday 3 JUN 2025
Low 55°	Low 57°	Low 58°	Low 57°	Low 61°
High 71°	High 79°	High 77°	High 80°	High 80°

Overcast 39% Rain	Partly Cloudy 16% Rain	Mostly Cloudy 22% Rain	Clear 13% Rain	Mostly Cloudy 27% Rain

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