Lemont, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Mostly Clear 80°F 27°C Heat Index: 81°F	Observed at: Lemont, IL	Elevation: 958 ft | 292 m
	Last Updated: July 16, 10:15 PM Timezone: GMT -5/-4
	Sky Conditions: Mostly Clear	Temperature: 80°F | 27°C
	Pressure: 29.4 in | 995.6 mb	Dewpoint: 60°F | 16°C
	Humidity: 50%	Wind: NE 4 mph | NE 6 kph
	Feels Like: 82°F | 28°C	Visibility: 39.8 mi | 64 km
	Lat/Long: 41.6736 | -88.0017	Sunrise: 5:32 AM   Sunset: 8:24 PM

7 Day Graphical Forecast

Valid: 10:28 PM 7/16/2026

Tonight Light Drizzle 75 °F 24% Chance Precipitation Friday Overcast 92 |74 °F 19% Chance Precipitation Saturday Overcast 91 |71 °F 68% Chance Precipitation Sunday Overcast 84 |67 °F 2% Chance Precipitation Monday Overcast 83 |63 °F 44% Chance Precipitation Tuesday Light Drizzle 83 |65 °F 44% Chance Precipitation Wednesday Overcast 74 |55 °F 5% Chance Precipitation

7 Hour Graphical Forecast

Valid: 10:28 PM 7/16/2026

10 PM Mostly Clear 81 °F 1% Chance Precipitation

11 PM Partly Cloudy 80 °F 4% Chance Precipitation

12 AM Overcast 80 °F 7% Chance Precipitation

1 AM Mostly Clear 77 °F 4% Chance Precipitation

2 AM Clear 77 °F 3% Chance Precipitation

3 AM Clear 76 °F 2% Chance Precipitation

4 AM Clear 75 °F 3% Chance Precipitation

7 Day Textual Forecast - with QPF, Max Wind, Humidity, Snowfall & UV Index

7 Day & Night Weather Forecast for Lemont, IL - (Fahrenheit & Celsius) Valid: 10:28 PM 7/16/2026 Tonight Light Drizzle with a low around 75°F [24°C]. NE wind to around 12 mph [20 kph], with gusts to near 19 mph [30 kph]. Chance of precipitation 24% with QPF of 0.02 in [0.4 mm]. Friday Overcast with a high near 92°F [34°C]. SW wind to around 11 mph [18 kph], with gusts to near 20 mph [32 kph]. Dewpoint near 60°F [16°C] with humidity of 90%. Pressure around 29.40 in [995.6 mb]. UV Index: 7.5. Chance of precipitation 19% with QPF of 0.00 in [0.0 mm]. Friday Night Overcast with a low around 74°F [24°C]. SW wind to around 11 mph [18 kph], with gusts to near 20 mph [32 kph]. Chance of precipitation 19% with QPF of 0.00 in [0.0 mm]. Saturday Overcast with a high near 91°F [33°C]. WNW wind to around 15 mph [25 kph], with gusts to near 32 mph [52 kph]. Dewpoint near 60°F [16°C] with humidity of 83%. Pressure around 29.40 in [995.6 mb]. UV Index: 7.45. Chance of precipitation 68% with QPF of 0.02 in [0.4 mm]. Saturday Night Overcast with a low around 71°F [22°C]. WNW wind to around 15 mph [25 kph], with gusts to near 32 mph [52 kph]. Chance of precipitation 68% with QPF of 0.02 in [0.4 mm]. Sunday Overcast with a high near 84°F [29°C]. ENE wind to around 7 mph [11 kph], with gusts to near 17 mph [28 kph]. Dewpoint near 60°F [16°C] with humidity of 88%. Pressure around 29.40 in [995.6 mb]. UV Index: 7.5. Chance of precipitation 2% with QPF of 0.00 in [0.0 mm]. Sunday Night Overcast with a low around 67°F [19°C]. ENE wind to around 7 mph [11 kph], with gusts to near 17 mph [28 kph]. Chance of precipitation 2% with QPF of 0.00 in [0.0 mm]. Monday Overcast with a high near 83°F [28°C]. S wind to around 12 mph [20 kph], with gusts to near 27 mph [43 kph]. Dewpoint near 60°F [16°C] with humidity of 96%. Pressure around 29.40 in [995.6 mb]. UV Index: 6.5. Chance of precipitation 44% with QPF of 0.00 in [0.0 mm]. Monday Night Overcast with a low around 63°F [17°C]. S wind to around 12 mph [20 kph], with gusts to near 27 mph [43 kph]. Chance of precipitation 44% with QPF of 0.00 in [0.0 mm]. Tuesday Light Drizzle with a high near 83°F [28°C]. WNW wind to around 15 mph [25 kph], with gusts to near 34 mph [55 kph]. Dewpoint near 60°F [16°C] with humidity of 97%. Pressure around 29.40 in [995.6 mb]. UV Index: 7.45. Chance of precipitation 44% with QPF of 0.00 in [0.1 mm]. Tuesday Night Light Drizzle with a low around 65°F [18°C]. WNW wind to around 15 mph [25 kph], with gusts to near 34 mph [55 kph]. Chance of precipitation 44% with QPF of 0.00 in [0.1 mm]. Wednesday Overcast with a high near 74°F [23°C]. N wind to around 16 mph [25 kph], with gusts to near 24 mph [38 kph]. Dewpoint near 60°F [16°C] with humidity of 78%. Pressure around 29.40 in [995.6 mb]. UV Index: 7.25. Chance of precipitation 5% with QPF of 0.00 in [0.0 mm]. Wednesday Night Overcast with a low around 55°F [13°C]. N wind to around 16 mph [25 kph], with gusts to near 24 mph [38 kph]. Chance of precipitation 5% with QPF of 0.00 in [0.0 mm].

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7 Day and Night - QPF Forecast for Lemont, IL

Tonight: 0.4 mm | 0.02 in

Friday: 0.0 mm | 0.00 in

Friday Night: 0.0 mm | 0.00 in

Saturday: 0.4 mm | 0.02 in

Saturday Night: 0.4 mm | 0.02 in

Sunday: 0.0 mm | 0.00 in

Sunday Night: 0.0 mm | 0.00 in

Monday: 0.0 mm | 0.00 in

Monday Night: 0.0 mm | 0.00 in

Tuesday: 0.1 mm | 0.00 in

Tuesday Night: 0.1 mm | 0.00 in

Wednesday: 0.0 mm | 0.00 in

Wednesday Night: 0.0 mm | 0.00 in

7 Day and Night - Maximum Wind Speed Forecast for Lemont, IL

Tonight: NE @ 20 kph | 12 mph

Friday: SW @ 18 kph | 11 mph

Friday Night: SW @ 18 kph | 11 mph

Saturday: WNW @ 25 kph | 15 mph

Saturday Night: WNW @ 25 kph | 15 mph

Sunday: ENE @ 11 kph | 7 mph

Sunday Night: ENE @ 11 kph | 7 mph

Monday: S @ 20 kph | 12 mph

Monday Night: S @ 20 kph | 12 mph

Tuesday: WNW @ 25 kph | 15 mph

Tuesday Night: WNW @ 25 kph | 15 mph

Wednesday: N @ 25 kph | 16 mph

Wednesday Night: N @ 25 kph | 16 mph

7 Day and Night - Maximum Humidity Forecast for Lemont, IL

Tonight: 91 %

Friday: 90 %

Friday Night: 90 %

Saturday: 83 %

Saturday Night: 83 %

Sunday: 88 %

Sunday Night: 88 %

Monday: 96 %

Monday Night: 96 %

Tuesday: 97 %

Tuesday Night: 97 %

Wednesday: 78 %

Wednesday Night: 78 %

7 Day and Night - Snowfall Totals Forecast for Lemont, IL

Tonight: 0.0 cm | 0.00 in

Friday: 0.0 cm | 0.00 in

Friday Night: 0.0 cm | 0.00 in

Saturday: 0.0 cm | 0.00 in

Saturday Night: 0.0 cm | 0.00 in

Sunday: 0.0 cm | 0.00 in

Sunday Night: 0.0 cm | 0.00 in

Monday: 0.0 cm | 0.00 in

Monday Night: 0.0 cm | 0.00 in

Tuesday: 0.0 cm | 0.00 in

Tuesday Night: 0.0 cm | 0.00 in

Wednesday: 0.0 cm | 0.00 in

Wednesday Night: 0.0 cm | 0.00 in

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