LEMONT, IL 60439 Weather Forecast & Current Conditions

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ROMEOVILLE WFO, IL
Current Weather

12:30 AM CDT MAY 14, 2026
Clear
45°F
Feels Like: 42°F
Dewpoint: 37°F
Rel. Hum.: 73%
Visibility: 10 miles
Wind: SW at 5 mph
Pressure: 30.09 inches
Last 72 hours

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LEMONT, IL 60439
Weather Forecast

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Snow Depth pages
REST OF TONIGHT
Clear. Lows in the upper 30s. Southeast winds 5 to 10 mph, becoming west after midnight.
THURSDAY
Sunny. Highs in the upper 60s. North winds around 5 mph, becoming east in the afternoon.
THURSDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of showers after midnight. Lows in the upper 40s. Southeast winds 5 to 10 mph. Chance of precipitation 20 percent.
FRIDAY
Mostly cloudy. A chance of showers in the morning. Breezy with highs in the lower 70s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation 30 percent.
FRIDAY NIGHT
Partly cloudy. A chance of showers and thunderstorms after midnight. Lows in the upper 50s. South winds 10 to 15 mph, diminishing to 5 to 10 mph after midnight. Chance of precipitation 40 percent.
SATURDAY
Mostly cloudy. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. Highs in the lower 80s. Chance of precipitation 70 percent.
SATURDAY NIGHT
Mostly cloudy. Showers and thunderstorms likely, mainly in the evening. Lows around 60. Chance of precipitation 70 percent.
SUNDAY
Mostly cloudy. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Breezy with highs around 80. Chance of precipitation 40 percent.
SUNDAY NIGHT
Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 60s.
MONDAY
Partly cloudy. A chance of showers and thunderstorms in the afternoon. Breezy with highs in the mid 80s. Chance of precipitation 50 percent.
MONDAY NIGHT
Showers and thunderstorms likely. Breezy with lows in the mid 60s. Chance of precipitation 60 percent.
TUESDAY
Showers and thunderstorms likely. Highs in the mid 70s. Chance of precipitation 70 percent.
TUESDAY NIGHT
Mostly cloudy. Showers and thunderstorms likely, mainly in the evening. Lows in the upper 50s. Chance of precipitation 60 percent.

Visible Weather Satellite
LEMONT, IL 60439
Infrared Weather Satellite
LEMONT, IL 60439
NEXRAD Weather Radar
LEMONT, IL 60439

ROMEOVILLE WFO, IL 3 hourly weather forecast

weather forecast created  8:00 PM EDT  5/13/2026
Thursday
14 MAY 2026
LEMONT, IL 60439 weather forecast Day 1, 0 hours 1 AM 45° 44° Clear 0%

0% Thunder
( 0% severe)
  CALM 73% 37°
Low 41° LEMONT, IL 60439 weather forecast Day 1, 3 hours 4 AM 42° 41° Clear NNE   2 82% 37°
High 69° LEMONT, IL 60439 weather forecast Day 1, 6 hours 7 AM 44° 43° Clear 0%

0% Thunder
( 0% severe)
  CALM 79% 38°

Clear



LEMONT, IL 60439 weather forecast Day 1, 9 hours 10 AM 58° 58° Clear N   3 45% 37°
LEMONT, IL 60439 weather forecast Day 1, 12 hours 1 PM 65° 65° Clear 0%

0% Thunder
( 0% severe)
  CALM 34% 36°
LEMONT, IL 60439 weather forecast Day 1, 15 hours 4 PM 68° 68° Clear   CALM 29% 35°
LEMONT, IL 60439 weather forecast Day 1, 18 hours 7 PM 65° 65° Partly Cloudy 2%

0% Thunder
( 2% severe)
SE   9 33% 35°
LEMONT, IL 60439 weather forecast Day 1, 21 hours 10 PM 54° 51° Clear ESE   9 48% 35°
Friday
15 MAY 2026
LEMONT, IL 60439 weather forecast Day 2, 0 hours 1 AM 51° 48° Mostly Cloudy 27%
RAIN
<.01 in
0% Thunder
( 8% severe)
SSE   9 56% 36°
Low 48° LEMONT, IL 60439 weather forecast Day 2, 3 hours 4 AM 51° 47° Mostly Cloudy SSE   10 61% 38°
High 75° LEMONT, IL 60439 weather forecast Day 2, 6 hours 7 AM 53° 49° Mostly Cloudy 14%
RAIN
<.01 in
0% Thunder
( 4% severe)
S   13 66% 42°

Mostly Cloudy




Breezy
LEMONT, IL 60439 weather forecast Day 2, 9 hours 10 AM 60° 57° Mostly Cloudy S   16 62% 47°
LEMONT, IL 60439 weather forecast Day 2, 12 hours 1 PM 67° 67° Mostly Cloudy 2%

0% Thunder
( 6% severe)
S   18 54% 50°
LEMONT, IL 60439 weather forecast Day 2, 15 hours 4 PM 74° 74° Partly Cloudy S   18 50% 54°
LEMONT, IL 60439 weather forecast Day 2, 18 hours 7 PM 72° 72° Partly Cloudy 8%

0% Thunder
( 13% severe)
S   15 53% 54°
LEMONT, IL 60439 weather forecast Day 2, 21 hours 10 PM 66° 66° Partly Cloudy S   12 68% 55°

ROMEOVILLE WFO, IL extended weather forecast

Saturday
16 MAY 2026
Sunday
17 MAY 2026
Monday
18 MAY 2026
Tuesday
19 MAY 2026
Wednesday
20 MAY 2026
Low 61° Low 63° Low 65° Low 60° Low 48°
High 82° High 83° High 80° High 72° High 69°
LEMONT, IL 60439 weather forecast Day 3 LEMONT, IL 60439 weather forecast Day 4 LEMONT, IL 60439 weather forecast Day 5 LEMONT, IL 60439 weather forecast Day 6 LEMONT, IL 60439 weather forecast Day 7
Overcast
80% Rain
Overcast
67% Rain
Mostly Cloudy
56% Rain
Mostly Cloudy
59% Rain
Mostly Cloudy
25% Rain
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