WATERLOO, IL 62298 Weather Forecast & Current Conditions

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EAST ST. LOUIS, IL
Current Weather

6:53 AM CDT APR 13, 2026
Broken Clouds
68°F
Feels Like: 68°F
Dewpoint: 61°F
Rel. Hum.: 78%
Visibility: 10 miles
Wind: S at 5 mph
Pressure: 29.99 inches
Last 72 hours

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WATERLOO, IL 62298
Weather Forecast

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Snow Depth pages
TODAY
Mostly sunny. Highs in the mid 80s. Southwest winds 10 to 15 mph with gusts up to 25 mph.
TONIGHT
Partly cloudy. Lows in the upper 60s. South winds 10 to 15 mph with gusts up to 30 mph.
TUESDAY
Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Southwest winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 20 percent.
TUESDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the upper 60s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 40 percent.
WEDNESDAY
Mostly cloudy with showers likely. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the lower 80s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 70 percent.
WEDNESDAY NIGHT
Showers likely with a chance of thunderstorms. Lows in the lower 60s. Chance of rain 70 percent.
THURSDAY
Mostly sunny. A chance of showers and thunderstorms, mainly in the morning. Highs in the lower 80s. Chance of rain 40 percent.
THURSDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s.
FRIDAY
Partly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 20 percent.
FRIDAY NIGHT
Mostly cloudy with a slight chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the lower 60s. Chance of rain 70 percent.
SATURDAY
Partly sunny with a chance of showers with a slight chance of thunderstorms. Cooler with highs in the mid 70s. Chance of rain 50 percent.
SATURDAY NIGHT
Mostly cloudy with a chance of showers in the evening, then partly cloudy with a slight chance of showers after midnight. Much cooler with lows in the lower 40s. Chance of rain 50 percent.
SUNDAY
Sunny, cooler with highs in the mid 60s.

Visible Weather Satellite
WATERLOO, IL 62298
Infrared Weather Satellite
WATERLOO, IL 62298
NEXRAD Weather Radar
WATERLOO, IL 62298

EAST ST. LOUIS, IL 3 hourly weather forecast

weather forecast created  6:00 PM MDT  4/12/2026
Monday
13 APR 2026
WATERLOO, IL 62298 weather forecast Day 1, 0 hours 1 AM 68° 68° Mostly Cloudy 16%
RAIN
<.01 in
0% Thunder
( 8% severe)
SSW   13 73% 59°
Low 66° WATERLOO, IL 62298 weather forecast Day 1, 3 hours 4 AM 67° 67° Mostly Cloudy SSW   10 78% 60°
High 85° WATERLOO, IL 62298 weather forecast Day 1, 6 hours 7 AM 67° 67° Partly Cloudy 5%

0% Thunder
( 11% severe)
S   9 81% 61°

Partly Cloudy



WATERLOO, IL 62298 weather forecast Day 1, 9 hours 10 AM 74° 74° Partly Cloudy SSW   13 69% 63°
WATERLOO, IL 62298 weather forecast Day 1, 12 hours 1 PM 82° 83° Partly Cloudy 7%

0% Thunder
( 23% severe)
SSW   15 53% 63°
WATERLOO, IL 62298 weather forecast Day 1, 15 hours 4 PM 84° 85° Partly Cloudy S   16 48% 62°
WATERLOO, IL 62298 weather forecast Day 1, 18 hours 7 PM 80° 81° Partly Cloudy 12%
RAIN
<.01 in
0% Thunder
( 17% severe)
S   15 52% 61°
WATERLOO, IL 62298 weather forecast Day 1, 21 hours 10 PM 75° 75° Partly Cloudy S   14 64% 62°
Tuesday
14 APR 2026
WATERLOO, IL 62298 weather forecast Day 2, 0 hours 1 AM 72° 72° Partly Cloudy 12%
RAIN
<.01 in
0% Thunder
( 11% severe)
SSW   13 71% 62°
Low 66° WATERLOO, IL 62298 weather forecast Day 2, 3 hours 4 AM 69° 69° Partly Cloudy SSW   12 78% 62°
High 88° WATERLOO, IL 62298 weather forecast Day 2, 6 hours 7 AM 69° 69° Partly Cloudy 7%

0% Thunder
( 13% severe)
SSW   10 78% 62°

Partly Cloudy

Chance of Rain

WATERLOO, IL 62298 weather forecast Day 2, 9 hours 10 AM 77° 79° Mostly Cloudy SSW   14 64% 64°
WATERLOO, IL 62298 weather forecast Day 2, 12 hours 1 PM 84° 85° Partly Cloudy 20%
RAIN
<.01 in
0% Thunder
( 21% severe)
SSW   15 51% 64°
WATERLOO, IL 62298 weather forecast Day 2, 15 hours 4 PM 87° 88° Partly Cloudy SSW   16 45% 63°
WATERLOO, IL 62298 weather forecast Day 2, 18 hours 7 PM 82° 83° Partly Cloudy 15%
RAIN
<.01 in
0% Thunder
( 25% severe)
S   14 51% 62°
WATERLOO, IL 62298 weather forecast Day 2, 21 hours 10 PM 77° 79° Mostly Cloudy SSW   13 60% 62°

EAST ST. LOUIS, IL extended weather forecast

Wednesday
15 APR 2026
Thursday
16 APR 2026
Friday
17 APR 2026
Saturday
18 APR 2026
Sunday
19 APR 2026
Low 64° Low 60° Low 57° Low 60° Low 42°
High 77° High 80° High 84° High 69° High 65°
WATERLOO, IL 62298 weather forecast Day 3 WATERLOO, IL 62298 weather forecast Day 4 WATERLOO, IL 62298 weather forecast Day 5 WATERLOO, IL 62298 weather forecast Day 6 WATERLOO, IL 62298 weather forecast Day 7
Overcast
75% Rain
Mostly Cloudy
84% Rain
Partly Cloudy
27% Rain
Overcast
76% Rain
Partly Cloudy
24% Rain
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