Current Weather Forecast for Lacon

IL 61540  |   5:53pm

Weather Conditions

90°

Feels Like 101°

Mostly Cloudy

75° 93° HEAT ADVISORY

HEAT ADVISORY

1

UV Index

Moderate

Air Quality

SSW 10 mph

Wind

0 in

rain

Tonight

Mon 6/29

76°

Lowest Temperature

7%

Clear to partly cloudy. Low 76F. Winds SSW at 10 to 20 mph.

Tomorrow

Tue 6/30

93°

Highest Temperature

6%

Sunshine along with some cloudy intervals. Hot and humid. High 93F. Winds SW at 10 to 20 mph.

Tomorrow night

Tue 6/30

74°

Lowest Temperature

8%

Clear skies. Low 74F. Winds SSW at 10 to 15 mph.

Next 12 Hours Next 7 Days

Next 12 Hours Forecast in Lacon

Hourly Weather Forecast & Temperature

6PM

2%

90°

Feels Like 101°

HEAT ADVISORY

Partly Cloudy

S 10 mph

Wind

1010 mb

Pressure

63%

Humidity

1

UV Index

10mi

Visibility

59%

Cloud Cover

7PM

2%

89°

Feels Like 99°

HEAT ADVISORY

Partly Cloudy

S 10 mph

Wind

1010 mb

Pressure

64%

Humidity

0

UV Index

10mi

Visibility

51%

Cloud Cover

8PM

2%

87°

Feels Like 96°

HEAT ADVISORY

Mostly Sunny

S 8 mph

Wind

1011 mb

Pressure

68%

Humidity

0

UV Index

10mi

Visibility

29%

Cloud Cover

9PM

2%

83°

Feels Like 91°

HEAT ADVISORY

Clear

S 8 mph

Wind

1011 mb

Pressure

75%

Humidity

0

UV Index

10mi

Visibility

17%

Cloud Cover

10PM

2%

83°

Feels Like 90°

HEAT ADVISORY

Clear

S 8 mph

Wind

1011 mb

Pressure

76%

Humidity

0

UV Index

10mi

Visibility

15%

Cloud Cover

11PM

2%

82°

Feels Like 89°

HEAT ADVISORY

Clear

S 9 mph

Wind

1011 mb

Pressure

77%

Humidity

0

UV Index

10mi

Visibility

11%

Cloud Cover

12AM

3%

82°

Feels Like 88°

HEAT ADVISORY

Clear

SSW 9 mph

Wind

1011 mb

Pressure

78%

Humidity

0

UV Index

10mi

Visibility

12%

Cloud Cover

1AM

6%

80°

Feels Like 86°

HEAT ADVISORY

Mostly Clear

SSW 9 mph

Wind

1012 mb

Pressure

78%

Humidity

0

UV Index

10mi

Visibility

26%

Cloud Cover

2AM

6%

80°

Feels Like 85°

HEAT ADVISORY

Partly Cloudy

SSW 8 mph

Wind

1012 mb

Pressure

80%

Humidity

0

UV Index

10mi

Visibility

39%

Cloud Cover

3AM

6%

79°

Feels Like 84°

HEAT ADVISORY

Mostly Clear

SSW 8 mph

Wind

1013 mb

Pressure

81%

Humidity

0

UV Index

10mi

Visibility

21%

Cloud Cover

4AM

7%

78°

Feels Like 83°

HEAT ADVISORY

Mostly Clear

SSW 8 mph

Wind

1013 mb

Pressure

83%

Humidity

0

UV Index

10mi

Visibility

25%

Cloud Cover

5AM

7%

77°

Feels Like 82°

HEAT ADVISORY

Partly Cloudy

SSW 7 mph

Wind

1013 mb

Pressure

84%

Humidity

0

UV Index

10mi

Visibility

30%

Cloud Cover

Mon 6/29

Mon

7%

75°

93°

Mostly clear. Lows overnight in the mid 70s.

99°

Feels Like

SSW 14 mph

Wind

75%

Humidity

0

UV Index

5:28 AM

Sunrise

8:34 PM

Sunset

Tue 6/30

Tue

6%

76°

93°

HEAT ADVISORY

A few clouds. Highs in the low 90s and lows in the mid 70s.

101°

Feels Like

SW 13 mph

Wind

63%

Humidity

9

UV Index

5:28 AM

Sunrise

8:34 PM

Sunset

Wed 7/1

Wed

7%

74°

93°

HEAT ADVISORY

Mainly sunny. Highs in the low 90s and lows in the mid 70s.

99°

Feels Like

SW 12 mph

Wind

60%

Humidity

9

UV Index

5:29 AM

Sunrise

8:34 PM

Sunset

Thu 7/2

Thu

24%

76°

91°

HEAT ADVISORY

Mix of sun and clouds. Highs in the low 90s and lows in the mid 70s.

97°

Feels Like

SW 10 mph

Wind

61%

Humidity

9

UV Index

5:29 AM

Sunrise

8:33 PM

Sunset

Fri 7/3

Fri

67%

73°

86°

Thunderstorms. Highs in the mid 80s and lows in the low 70s.

92°

Feels Like

SSW 8 mph

Wind

72%

Humidity

9

UV Index

5:30 AM

Sunrise

8:33 PM

Sunset

Sat 7/4

Sat

60%

70°

83°

Showers and thunderstorms late. Highs in the low 80s and lows in the mid 60s.

87°

Feels Like

W 6 mph

Wind

73%

Humidity

9

UV Index

5:30 AM

Sunrise

8:33 PM

Sunset

Sun 7/5

Sun

49%

66°

81°

Thunderstorms developing in the afternoon. Highs in the low 80s and lows in the mid 60s.

84°

Feels Like

NE 7 mph

Wind

69%

Humidity

9

UV Index

5:31 AM

Sunrise

8:33 PM

Sunset

Mon 7/6

Mon

23%

65°

83°

Times of sun and clouds. Highs in the low 80s and lows in the mid 60s.

84°

Feels Like

NE 8 mph

Wind

64%

Humidity

9

UV Index

5:31 AM

Sunrise

8:32 PM

Sunset

Need to see beyond 12 Hours?

Find more forecast on the FREE FOX WEATHER App

GO TO APP STORE

Looking for homes in this area?

• 1401 Hickory Grove Rd, Lacon, IL 61540
• 1574 Lake Wildwood, Varna, IL 61375
• 1558 County Road 400 N, Lacon, IL 61540

Sponsored by Redfin. Housing data supplied by Redfin independent of FOX Weather.

Latest Stories from Illinois

Life-threatening heat dome to roast over 230 million ahead of America's 250th birthday

Temperatures in the 90s are spreading across the Midwest and will reach the East Coast by midweek, when it will feel like 100 to 110 degrees for tens of millions of people as a potentially record-setting heat dome expands eastward ahead of America's 250th birthday.

Magnitude 3.5 earthquake jolts southern Illinois, felt by hundreds across multiple states

Residents across southern Illinois were rattled Monday morning after a magnitude 3.5 earthquake sent light shaking across four states.

4 dead as flash flooding slams Kentucky, triggering emergencies and evacuations

Thunderstorms and flash flooding are threatening the first half of the weekend for millions across parts of the Ohio Valley and East Coast. Those with outdoor plans could be dodging showers on both Saturday and Sunday ahead of a return to 90-degree weather by the middle of next week.

Illinois leads the country for most tornado reports so far in 2026 and it's only June

We're nearly halfway through the year, and it's been an active year for severe weather thus far, with more than 800 reported tornadoes across the U.S.

Load More Stories