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Lemont IL Weather - Mostly Cloudy - 64°F
Mostly Cloudy
64°F
Updated 9:59 am
Feels Like 52°F
Humidity 77%
Wind NE 13 mph
Barometer  30.37 in
Dew Point 57°F
Lemont IL Weather - Mostly Cloudy - 18°C
Mostly Cloudy
18°C
Updated 9:59 am
Feels Like 11°C
Humidity 77%
Wind NE 21 km/h
Barometer  102.8 kPa
Dew Point 14°C
Lemont, IL Weather and Current Conditionslemont il weather forecast

Lemont, IL Weather Forecast

Lemont Illinois WeatherLemont, Illinois Weather Weather Forecast
14 day API Lemont, IL weather forecast. Note. Our 7-day weather forecast for Lemont, Illinois is our most reliable and accurate forecast. This model should only be used as a likely scenario. Forecasting more than 7 days is difficult.
Lemont, IL Weather Forecast Dated: 959 AM Wed Sep 23 2026
Expect a cool pattern with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.

Wednesday, September 23, 2026

Mid-Morning
Lemont Weather - 2026-09-23 - Morning - Sunny
58°F 15°C
Sunny
Mid-Afternoon
Lemont Weather - 2026-09-23 - Afternoon - Overcast
64°F 18°C
Overcast
Early-Evening
Lemont Weather - 2026-09-23 - Evening - Overcast
61°F 16°C
Overcast
Refreshing around 64°F 18°C, sunny in the morning, overcast in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds turning from the ENE to the E at 10 mph 15 km/h. Gusts up to 22 mph 36 km/h.

Thursday, September 24, 2026

Mid-Morning
Lemont Weather - 2026-09-24 - Morning - Sunny
60°F 16°C
Sunny
Mid-Afternoon
Lemont Weather - 2026-09-24 - Afternoon - Overcast
70°F 21°C
Overcast
Early-Evening
Lemont Weather - 2026-09-24 - Evening - Overcast
65°F 19°C
Overcast
Comfortable with temperatures reaching 70°F 21°C, sunny in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds switching from the ENE to the E at 6 mph 10 km/h.

Friday, September 25, 2026

Mid-Morning
Lemont Weather - 2026-09-25 - Morning - Overcast
59°F 15°C
Overcast
Mid-Afternoon
Lemont Weather - 2026-09-25 - Afternoon - Overcast
61°F 16°C
Overcast
Early-Evening
Lemont Weather - 2026-09-25 - Evening - Overcast
61°F 16°C
Overcast
Comfortable at 61°F 16°C, overcast throughout the day, with steady humidity and steady pressure.

Saturday, September 26, 2026

Mid-Morning
Lemont Weather - 2026-09-26 - Morning - Overcast
58°F 14°C
Overcast
Mid-Afternoon
Lemont Weather - 2026-09-26 - Afternoon - Overcast
68°F 20°C
Overcast
Early-Evening
Lemont Weather - 2026-09-26 - Evening - Overcast
60°F 16°C
Overcast
Mild temperatures up to 68°F 20°C, overcast throughout the day, with steady humidity and steady pressure.

Sunday, September 27, 2026

Mid-Morning
Lemont Weather - 2026-09-27 - Morning - Cloudy
60°F 16°C
Cloudy
Mid-Afternoon
Lemont Weather - 2026-09-27 - Afternoon - Overcast
56°F 14°C
Overcast
Early-Evening
Lemont Weather - 2026-09-27 - Evening - Overcast
57°F 14°C
Overcast
Brisk around 56°F 14°C, cloudy in the morning, overcast in the afternoon, and cloudy this evening, with increasing humidity and steady pressure.

Monday, September 28, 2026

Mid-Morning
Lemont Weather - 2026-09-28 - Morning - Partly Cloudy
62°F 17°C
Partly Cloudy
Mid-Afternoon
Lemont Weather - 2026-09-28 - Afternoon - Partly Cloudy
69°F 20°C
Partly Cloudy
Early-Evening
Lemont Weather - 2026-09-28 - Evening - Partly Cloudy
65°F 18°C
Partly Cloudy
Pleasant near 69°F 20°C, partly cloudy in the morning, cloudy in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure.

Tuesday, September 29, 2026

Mid-Morning
Lemont Weather - 2026-09-29 - Morning - Sunny
60°F 15°C
Sunny
Mid-Afternoon
Lemont Weather - 2026-09-29 - Afternoon - Cloudy
69°F 21°C
Cloudy
Early-Evening
Lemont Weather - 2026-09-29 - Evening - Cloudy
67°F 19°C
Cloudy
Comfortable with temperatures reaching 69°F 21°C, cloudy in the morning, becoming overcast through the afternoon and evening, with steady humidity and barometric pressure falling. Winds moving from the SE to the SSE at 8 mph 12 km/h.

Wednesday, September 30, 2026

Mid-Morning
Lemont Weather - 2026-09-30 - Morning - Heavy Rain Showers
58°F 15°C
Heavy Rain Showers
Mid-Afternoon
Lemont Weather - 2026-09-30 - Afternoon - Light Showers
51°F 11°C
Light Showers
Early-Evening
Lemont Weather - 2026-09-30 - Evening - Light Showers
49°F 9°C
Light Showers
Crisp with a high near 51°F 11°C, persistent showers off and on through the day, with steady humidity and barometric pressure rising. Winds out of the WSW at 16 mph 26 km/h. Gusts up to 29 mph 48 km/h.

Thursday, October 1, 2026

Mid-Morning
Lemont Weather - 2026-10-01 - Morning - Overcast
48°F 9°C
Overcast
Mid-Afternoon
Lemont Weather - 2026-10-01 - Afternoon - Overcast
57°F 14°C
Overcast
Early-Evening
Lemont Weather - 2026-10-01 - Evening - Overcast
55°F 13°C
Overcast
Brisk around 57°F 14°C, overcast through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds blowing from the W at 13 mph 21 km/h. Gusts up to 22 mph 36 km/h.

Friday, October 2, 2026

Mid-Morning
Lemont Weather - 2026-10-02 - Morning - Sunny
55°F 13°C
Sunny
Mid-Afternoon
Lemont Weather - 2026-10-02 - Afternoon - Sunny
71°F 22°C
Sunny
Early-Evening
Lemont Weather - 2026-10-02 - Evening - Sunny
70°F 21°C
Sunny
Mild with a high of 71°F 22°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and barometric pressure falling.

Saturday, October 3, 2026

Mid-Morning
Lemont Weather - 2026-10-03 - Morning - Scattered Showers
61°F 16°C
Scattered Showers
Mid-Afternoon
Lemont Weather - 2026-10-03 - Afternoon - Scattered Showers
67°F 19°C
Scattered Showers
Early-Evening
Lemont Weather - 2026-10-03 - Evening - Sunny
60°F 16°C
Sunny
Comfortable at 67°F 19°C, scattered downpours possible, with lower humidity and steady pressure. Winds turning from the W to the NW at 9 mph 15 km/h.

Sunday, October 4, 2026

Mid-Morning
Lemont Weather - 2026-10-04 - Morning - Sunny
52°F 11°C
Sunny
Mid-Afternoon
Lemont Weather - 2026-10-04 - Afternoon - Partly Cloudy
61°F 16°C
Partly Cloudy
Early-Evening
Lemont Weather - 2026-10-04 - Evening - Cloudy
58°F 15°C
Cloudy
Cool with a high near 61°F 16°C, sunny in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure.

Monday, October 5, 2026

Mid-Morning
Lemont Weather - 2026-10-05 - Morning - Overcast
54°F 12°C
Overcast
Mid-Afternoon
Lemont Weather - 2026-10-05 - Afternoon - Overcast
59°F 15°C
Overcast
Early-Evening
Lemont Weather - 2026-10-05 - Evening - Scattered Showers
57°F 14°C
Scattered Showers
Refreshing around 59°F 15°C, periods of heavy rain and gusty conditions, with increasing humidity and steady pressure.

Tuesday, October 6, 2026

Mid-Morning
Lemont Weather - 2026-10-06 - Morning - Sunny
56°F 13°C
Sunny
Mid-Afternoon
Lemont Weather - 2026-10-06 - Afternoon - Sunny
63°F 17°C
Sunny
Early-Evening
Lemont Weather - 2026-10-06 - Evening - Sunny
57°F 14°C
Sunny
Mildly cool near 63°F 17°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds out of the NE at 9 mph 14 km/h.

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Weather by the Numbers

Wed, 23rd
Lemont IL Weather - Wednesday, Sep 23, 2026 - Partly Cloudy
Hi: 65°F 18°C
Lo: 55°F 13°C
Sunrise 06:41 AM
Sunset 06:47 PM
Wind ENE 11 mph18 km/h
Dew Point 50°F10°C
uv Index 5
Barometric Pressure 30.33 in1027 mb
POP 5% *
Humidity 60%
Thu, 24th
Lemont IL Weather - Thursday, Sep 24, 2026 - Cloudy
Hi: 70°F 21°C
Lo: 57°F 14°C
Sunrise 06:42 AM
Sunset 06:46 PM
Wind E 8 mph13 km/h
Dew Point 50°F10°C
uv Index 2
Barometric Pressure 30.3 in1026 mb
POP 10% *
Humidity 53%
Fri, 25th
Lemont IL Weather - Friday, Sep 25, 2026 - Overcast
Hi: 63°F 17°C
Lo: 59°F 15°C
Sunrise 06:43 AM
Sunset 06:44 PM
Wind ESE 4 mph6 km/h
Dew Point 41°F5°C
uv Index 5
Barometric Pressure 30.3 in1026 mb
POP 12% *
Humidity 52%
Sat, 26th
Lemont IL Weather - Saturday, Sep 26, 2026 - Overcast
Hi: 68°F 20°C
Lo: 56°F 13°C
Sunrise 06:44 AM
Sunset 06:42 PM
Wind ESE 6 mph9 km/h
Dew Point 40°F4°C
uv Index 4
Barometric Pressure 30.21 in1023 mb
POP 10% *
Humidity 38%
Sun, 27th
Lemont IL Weather - Sunday, Sep 27, 2026 - Partly Cloudy
Hi: 69°F 21°C
Lo: 54°F 12°C
Sunrise 06:45 AM
Sunset 06:40 PM
Wind E 4 mph7 km/h
Dew Point 41°F5°C
uv Index 6
Barometric Pressure 30.12 in1020 mb
POP 4% *
Humidity 36%
Mon, 28th
Lemont IL Weather - Monday, Sep 28, 2026 - Partly Cloudy
Hi: 70°F 21°C
Lo: 57°F 14°C
Sunrise 06:46 AM
Sunset 06:39 PM
Wind SE 5 mph8 km/h
Dew Point 45°F7°C
uv Index 6
Barometric Pressure 30 in1016 mb
POP 4% *
Humidity 43%
Tue, 29th
Lemont IL Weather - Tuesday, Sep 29, 2026 - Overcast
Hi: 69°F 21°C
Lo: 58°F 14°C
Sunrise 06:47 AM
Sunset 06:37 PM
Wind SE 7 mph12 km/h
Dew Point 55°F13°C
uv Index 4
Barometric Pressure 29.85 in1011 mb
POP 14% *
Humidity 66%
Wed, 30th
Lemont IL Weather - Wednesday, Sep 30, 2026 - Light Rain Shower
Hi: 63°F 17°C
Lo: 48°F 9°C
Sunrise 06:48 AM
Sunset 06:35 PM
Wind WSW 15 mph24 km/h
Dew Point 51°F10°C
uv Index 3
Barometric Pressure 29.59 in1002 mb
POP 61% *
Humidity 88%
Thu, 1st
Lemont IL Weather - Thursday, Oct 1, 2026 - Cloudy
Hi: 58°F 14°C
Lo: 47°F 8°C
Sunrise 06:49 AM
Sunset 06:34 PM
Wind W 14 mph23 km/h
Dew Point 40°F4°C
uv Index 3
Barometric Pressure 29.8 in1009 mb
POP 14% *
Humidity 61%
Fri, 2nd
Lemont IL Weather - Friday, Oct 2, 2026 - Sunny
Hi: 73°F 23°C
Lo: 50°F 10°C
Sunrise 06:50 AM
Sunset 06:32 PM
Wind S 7 mph11 km/h
Dew Point 45°F7°C
uv Index 5
Barometric Pressure 29.97 in1015 mb
POP 2% *
Humidity 50%
Sat, 3rd
Lemont IL Weather - Saturday, Oct 3, 2026 - Overcast
Hi: 67°F 20°C
Lo: 54°F 12°C
Sunrise 06:51 AM
Sunset 06:30 PM
Wind WNW 7 mph11 km/h
Dew Point 56°F13°C
uv Index 4
Barometric Pressure 29.88 in1012 mb
POP 20% *
Humidity 74%
Sun, 4th
Lemont IL Weather - Sunday, Oct 4, 2026 - Sunny
Hi: 62°F 16°C
Lo: 48°F 9°C
Sunrise 06:52 AM
Sunset 06:28 PM
Wind NW 5 mph8 km/h
Dew Point 38°F3°C
uv Index 4
Barometric Pressure 30.06 in1018 mb
POP 3% *
Humidity 46%
Mon, 5th
Lemont IL Weather - Monday, Oct 5, 2026 - Overcast
Hi: 59°F 15°C
Lo: 52°F 11°C
Sunrise 06:53 AM
Sunset 06:27 PM
Wind SSE 5 mph8 km/h
Dew Point 44°F7°C
uv Index 3
Barometric Pressure 30.03 in1017 mb
POP 15% *
Humidity 62%
Tue, 6th
Lemont IL Weather - Tuesday, Oct 6, 2026 - Partly Cloudy
Hi: 63°F 17°C
Lo: 52°F 11°C
Sunrise 06:55 AM
Sunset 06:25 PM
Wind NE 9 mph14 km/h
Dew Point 47°F9°C
uv Index 5
Barometric Pressure 30.15 in1021 mb
POP 5% *
Humidity 61%
* POP = Probability of Precipitation. Data for 12:00 PM.