LACON, IL 61540 Weather Forecast & Current Conditions

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LACON/MARSHALL CNTY, IL
Current Weather

2:35 PM CDT JUN 13, 2026
Scattered Clouds
NA
Feels Like: NA
Dewpoint: NA
Rel. Hum.: NA%
Visibility: 10 miles
Wind: SW at 10 mph, gusts to 16
Pressure:
Last 72 hours

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LACON, IL 61540
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
THIS AFTERNOON
Partly sunny with a slight chance of showers and thunderstorms. Highs in the mid 80s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent.
TONIGHT
Showers and thunderstorms likely. Lows in the lower 60s. Southwest winds 5 to 10 mph, becoming northwest 10 to 15 mph after midnight. Chance of rain 70 percent.
SUNDAY
Mostly sunny. A chance of showers in the morning. Cooler. Less humid with highs in the lower 70s. Northwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 30 percent.
SUNDAY NIGHT
Mostly clear. Lows in the lower 50s. Northwest winds 10 to 15 mph, becoming west around 5 mph after midnight.
MONDAY
Sunny. Highs in the upper 70s. West winds 5 to 10 mph.
MONDAY NIGHT
Mostly clear. Lows in the mid 50s.
TUESDAY
Mostly sunny. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 70 percent.
TUESDAY NIGHT
A chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows in the mid 50s. Chance of rain 30 percent.
WEDNESDAY
Partly sunny. A chance of showers in the morning, then showers with thunderstorms likely in the afternoon. Locally heavy rainfall possible in the afternoon. Breezy with highs in the upper 70s. Chance of rain 80 percent.
WEDNESDAY NIGHT
Showers with a chance of thunderstorms in the evening. Breezy with lows in the lower 60s. Chance of rain 90 percent.
THURSDAY
Mostly sunny. Highs in the upper 70s.
THURSDAY NIGHT AND JUNETEENTH
Mostly clear. Lows in the mid 50s. Highs around 80.

Visible Weather Satellite
LACON, IL 61540
Infrared Weather Satellite
LACON, IL 61540
NEXRAD Weather Radar
LACON, IL 61540

LACON/MARSHALL CNTY, IL 3 hourly weather forecast

weather forecast created  7:00 AM CDT  6/13/2026
Saturday
13 JUN 2026
LACON, IL 61540 weather forecast Day 1, 12 hours 1 PM 83° 83° Partly Cloudy 34%
RAIN
.1–.25 in
0% Thunder
( 42% severe)
SSW   12 47% 61°
High 86° LACON, IL 61540 weather forecast Day 1, 15 hours 4 PM 85° 86° Partly Cloudy SSW   10 48% 63°
Mostly Cloudy

Rain Likely

LACON, IL 61540 weather forecast Day 1, 18 hours 7 PM 81° 83° Mostly Cloudy 65%
RAIN
***
0% Thunder
( 50% severe)
SSW   6 58% 65°
LACON, IL 61540 weather forecast Day 1, 21 hours 10 PM 73° 73° Mostly Cloudy   CALM 73% 64°
Sunday
14 JUN 2026
LACON, IL 61540 weather forecast Day 2, 0 hours 1 AM 69° 69° Mostly Cloudy 70%
RAIN
>2 in
0% Thunder
( 25% severe)
NW   5 78% 62°
Low 61° LACON, IL 61540 weather forecast Day 2, 3 hours 4 AM 64° 64° Mostly Cloudy NNW   9 81% 58°
High 72° LACON, IL 61540 weather forecast Day 2, 6 hours 7 AM 61° 60° Mostly Cloudy 3%

0% Thunder
( 4% severe)
NNW   10 81% 55°

Decreasing Clouds



LACON, IL 61540 weather forecast Day 2, 9 hours 10 AM 66° 66° Clear NNW   12 58% 51°
LACON, IL 61540 weather forecast Day 2, 12 hours 1 PM 70° 70° Partly Cloudy 0%

0% Thunder
( 1% severe)
NW   13 47% 49°
LACON, IL 61540 weather forecast Day 2, 15 hours 4 PM 72° 72° Clear NW   14 41% 47°
LACON, IL 61540 weather forecast Day 2, 18 hours 7 PM 70° 70° Partly Cloudy 0%

0% Thunder
( 2% severe)
NW   10 42% 46°
LACON, IL 61540 weather forecast Day 2, 21 hours 10 PM 61° 62° Clear   CALM 58% 46°
Monday
15 JUN 2026
LACON, IL 61540 weather forecast Day 3, 0 hours 1 AM 57° 58° Partly Cloudy 0%

0% Thunder
( 1% severe)
  CALM 67% 46°
Low 51° LACON, IL 61540 weather forecast Day 3, 3 hours 4 AM 54° 54° Partly Cloudy   CALM 74% 46°
High 76° LACON, IL 61540 weather forecast Day 3, 6 hours 7 AM 56° 56° Clear 0%

0% Thunder
( 1% severe)
WSW   2 72% 47°

Clear



LACON, IL 61540 weather forecast Day 3, 9 hours 10 AM 69° 69° Clear W   6 47% 48°
LACON, IL 61540 weather forecast Day 3, 15 hours 1 PM 74° 74° Clear 1%

0% Thunder
( 11% severe)
W   8 35% 45°
LACON, IL 61540 weather forecast Day 3, 18 hours 4 PM 76° 77° Partly Cloudy W   9 32% 44°
LACON, IL 61540 weather forecast Day 3, 21 hours 7 PM 74° 74° Partly Cloudy     W   6 37% 46°

LACON/MARSHALL CNTY, IL extended weather forecast

Tuesday
16 JUN 2026
Wednesday
17 JUN 2026
Thursday
18 JUN 2026
Friday
19 JUN 2026
Saturday
20 JUN 2026
Low 57° Low 64° Low 61° Low 56° Low 58°
High 78° High 75° High 78° High 76° High 80°
LACON, IL 61540 weather forecast Day 4 LACON, IL 61540 weather forecast Day 5 LACON, IL 61540 weather forecast Day 6 LACON, IL 61540 weather forecast Day 7 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Mostly Cloudy
61% Rain
Overcast
71% Rain
Overcast
68% Rain
Partly Cloudy
21% Rain
Mostly Cloudy
20% Rain
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