MERRIMAC, IL 62295 Weather Forecast & Current Conditions
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  62295 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)
 CURRENT WEATHER

EAST ST. LOUIS, IL
Current Weather
4:53 AM CDT JUN 9, 2026
Overcast
79°F
Feels Like: 82°F
Dewpoint: 72°F
Rel. Hum.: 79%
Visibility: 10 miles
Wind: SSW at 6 mph
Pressure: 29.98 inches
Last 72 hours

Local Area Snow Depth

Illinois Current Weather

Illinois MOS Forecast Weather


Weather Map

(Automated weather data from NWS/FAA)
  62295 WEATHER FORECAST
10-Day model forecast maps
2025 Hurricanes

MERRIMAC, IL 62295
Weather Forecast

 Snowfall Forecast pages
Snow Depth pages
TODAY
Partly sunny. Showers likely with a chance of thunderstorms this morning, then a slight chance of showers and thunderstorms this afternoon. Some thunderstorms may produce heavy rainfall this morning. Highs in the lower 90s. Southwest winds around 5 mph. Chance of rain 70 percent. Heat index values up to 109 this afternoon.
TONIGHT
Mostly clear. Humid with lows in the mid 70s. Southwest winds around 5 mph. Heat index values up to 110 early in the evening.
WEDNESDAY
Sunny with highs in the mid 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 105.
WEDNESDAY NIGHT
Mostly clear. Lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 104 early in the evening.
THURSDAY
Sunny. A slight chance of showers and thunderstorms in the afternoon. Humid with highs in the mid 90s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent. Heat index values up to 107.
THURSDAY NIGHT
Showers with a chance of thunderstorms in the evening, then mostly cloudy with a chance of showers with a slight chance of thunderstorms after midnight. Lows in the upper 60s. Chance of rain 80 percent. Heat index values up to 105 early in the evening.
FRIDAY
Mostly sunny. Highs in the mid 80s.
FRIDAY NIGHT
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s.
SATURDAY
Mostly sunny. A chance of showers in the morning, then a slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 30 percent.
SATURDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A chance of thunderstorms in the evening. A chance of showers. Lows in the mid 60s. Chance of rain 50 percent.
SUNDAY
Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50 percent.
SUNDAY NIGHT
Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly cloudy with a slight chance of showers after midnight. Lows in the lower 60s. Chance of rain 50 percent.
MONDAY
Mostly sunny with a slight chance of showers and thunderstorms. Highs around 80. Chance of rain 20 percent.

  62295 WEATHER SATELLITE LOOPS
Visible Weather Satellite
MERRIMAC, IL 62295
Infrared Weather Satellite
MERRIMAC, IL 62295
  62295 WEATHER RADAR LOOP
NEXRAD Weather Radar
MERRIMAC, IL 62295
 MOS COMPUTER WEATHER FORECAST

EAST ST. LOUIS, IL 3 hourly weather forecast
weather forecast created  6:00 PM MDT  6/ 8/2026
Tuesday
9 JUN 2026		 MERRIMAC, IL 62295 weather forecast Day 1, 0 hours 1 AM 75° 75° Mostly Cloudy 65%
RAIN
***		 0% Thunder
( 26% severe)		 SSW   3 90% 72°
Low 73° MERRIMAC, IL 62295 weather forecast Day 1, 3 hours 4 AM 74° 74° Mostly Cloudy SSW   5 90% 71°
High 93° MERRIMAC, IL 62295 weather forecast Day 1, 6 hours 7 AM 75° 75° Mostly Cloudy 37%
RAIN
1–2 in		 0% Thunder
( 33% severe)		 SSW   5 90% 72°

Mostly Cloudy

Chance of Rain

 MERRIMAC, IL 62295 weather forecast Day 1, 9 hours 10 AM 83° 90° Partly Cloudy WSW   8 74% 74°
MERRIMAC, IL 62295 weather forecast Day 1, 12 hours 1 PM 88° 99° Mostly Cloudy 19%
RAIN
<.01 in		 0% Thunder
( 39% severe)		 SW   9 68% 76°
MERRIMAC, IL 62295 weather forecast Day 1, 15 hours 4 PM 92° 106° Mostly Cloudy SW   9 62% 77°
MERRIMAC, IL 62295 weather forecast Day 1, 18 hours 7 PM 91° 106° Partly Cloudy 3%

 0% Thunder
( 15% severe)		 SSW   7 66% 78°
MERRIMAC, IL 62295 weather forecast Day 1, 21 hours 10 PM 83° 91° Partly Cloudy S   6 80% 76°
Wednesday
10 JUN 2026		 MERRIMAC, IL 62295 weather forecast Day 2, 0 hours 1 AM 80° 84° Clear 2%

 0% Thunder
( 8% severe)		 SSW   6 79% 73°
Low 74° MERRIMAC, IL 62295 weather forecast Day 2, 3 hours 4 AM 78° 80° Clear SSW   7 76% 70°
High 94° MERRIMAC, IL 62295 weather forecast Day 2, 6 hours 7 AM 78° 80° Partly Cloudy 0%

 0% Thunder
( 11% severe)		 SSW   7 76% 70°

Partly Cloudy



 MERRIMAC, IL 62295 weather forecast Day 2, 9 hours 10 AM 86° 92° Clear SSW   10 63% 72°
MERRIMAC, IL 62295 weather forecast Day 2, 12 hours 1 PM 92° 100° Clear 2%

 0% Thunder
( 32% severe)		 SSW   12 52% 72°
MERRIMAC, IL 62295 weather forecast Day 2, 15 hours 4 PM 94° 102° Partly Cloudy SSW   13 49% 72°
MERRIMAC, IL 62295 weather forecast Day 2, 18 hours 7 PM 91° 100° Clear 11%
RAIN
<.01 in		 0% Thunder
( 22% severe)		 S   12 56% 73°
MERRIMAC, IL 62295 weather forecast Day 2, 21 hours 10 PM 83° 88° Partly Cloudy SSW   10 70% 72°

EAST ST. LOUIS, 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 73° Low 69° Low 60° Low 65° Low 64°
High 96° High 84° High 86° High 79° High 80°
MERRIMAC, IL 62295 weather forecast Day 3 MERRIMAC, IL 62295 weather forecast Day 4 MERRIMAC, IL 62295 weather forecast Day 5 MERRIMAC, IL 62295 weather forecast Day 6 MERRIMAC, IL 62295 weather forecast Day 7
Partly Cloudy
29% Rain		 Partly Cloudy
58% Rain		 Partly Cloudy
16% Rain		 Overcast
60% Rain		 Overcast
45% Rain
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