Current Conditions

Lemont, Illinois

81°F27°C
Showers

Feels like84°F29°C

Wind

W 6 mph9 km/h

Humidity

72%

Cloud Cover

85%

As of Wednesday, August 12, 2026 at 4:19 PM CDT

Today's Outlook

Day

Overcast and warm, with a high of 81°F27°C. Light wind from the WSW around 6 mph10 km/h. 45% chance of light rain throughout the day. Heavy, humid air.

Night

Partly cloudy, with a low around 74°F23°C. Light wind from the SSW around 3 mph5 km/h. 37% chance of showers in the evening.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
ShowersHigh 81°F27°CFeels 84°F29°CLow 74°F23°CPrecip 0.09 in2.3 mm45%Cloud 64%Wind WSW 5 mph7 km/hWednesday: Overcast and warm, with a high of 81°F27°C. Light wind from the WSW around 6 mph10 km/h. 45% chance of light rain throughout the day. Heavy, humid air. Wednesday Night: Partly cloudy, with a low around 74°F23°C. Light wind from the SSW around 3 mph5 km/h. 37% chance of showers in the evening.
Light RainHigh 78°F25°CLow 70°F21°CPrecip 0.14 in3.6 mm61%Cloud 84%Wind E 4 mph6 km/hThursday: Overcast and warm, with a high of 78°F25°C and morning low of 70°F21°C. Light wind from the E around 4 mph7 km/h. 61% chance of light rain in the afternoon. Humid. Thursday Night: Mostly cloudy, with a low around 70°F21°C. Light wind from the E around 4 mph6 km/h. 52% chance of showers in the evening.
Light RainHigh 79°F26°CLow 71°F21°CPrecip 0.38 in9.7 mm57%Cloud 93%Wind E 5 mph9 km/hFriday: Overcast and warm, with a high of 79°F26°C and morning low of 71°F21°C. Breezy from the ESE at 6 to 7 mph9 to 11 km/h. 57% chance of light rain throughout the day. Humid. Friday Night: Overcast, with a low around 71°F21°C. Light wind from the E around 5 mph8 km/h. 47% chance of light rain throughout the night.
RainHigh 82°F28°CFeels 89°F31°CLow 73°F23°CPrecip 0.51 in13 mm68%Cloud 90%Wind SSE 6 mph9 km/hSaturday: Overcast and warm, with a high of 82°F28°C and morning low of 73°F23°C — feels like 88°F31°C. Breezy from the S at 6 to 7 mph10 to 11 km/h. 68% chance of rain throughout the day. Heavy, humid air. Saturday Night: Overcast, with a low around 73°F23°C. Light wind from the SE around 5 mph8 km/h. 47% chance of rain throughout the night.
Light RainHigh 85°F29°CFeels 91°F33°CLow 75°F24°CPrecip 0.23 in5.8 mm41%Cloud 80%Wind W 7 mph10 km/hSunday: Overcast and warm, with a high of 85°F29°C and morning low of 75°F24°C — feels like 91°F33°C. Breezy from the W at 7 to 8 mph11 to 12 km/h. 31% chance of light rain throughout the day. Heavy, humid air. Sunday Night: Mostly cloudy, with a low around 75°F24°C. Light wind from the W around 6 mph10 km/h. 41% chance of light rain throughout the night.
ShowersHigh 79°F26°CLow 69°F21°CPrecip 0.07 in1.7 mm20%Cloud 69%Wind NNE 6 mph10 km/hMonday: Mostly cloudy and warm, with a high of 79°F26°C and morning low of 70°F21°C. Breezy from the NNE at 7 mph11 km/h. 16% chance of drizzle throughout the day. Humid. Monday Night: Mostly cloudy, with a low around 69°F21°C. Breezy from the NNE at 5 to 7 mph9 to 11 km/h. 20% chance of showers overnight.
Partly CloudyHigh 84°F29°CLow 64°F18°CPrecip 0.01 in0.2 mm4%Cloud 50%Wind SSW 4 mph7 km/hTuesday: Mostly cloudy and warm, with a high of 84°F29°C and morning low of 65°F18°C. Light wind from the SW around 4 mph7 km/h. Tuesday Night: Partly cloudy, with a low around 64°F18°C. Light wind from the S around 4 mph7 km/h.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
WednesdayAug 1281°F27°C
Feels 84°F29°C
74°F23°C0.09 in2.3 mm· 45%64%ShowersWSW 5 mph7 km/h
ThursdayAug 1378°F25°C70°F21°C0.14 in3.6 mm· 61%84%Light RainE 4 mph6 km/h
FridayAug 1479°F26°C71°F21°C0.38 in9.7 mm· 57%93%Light RainE 5 mph9 km/h
SaturdayAug 1582°F28°C
Feels 89°F31°C
73°F23°C0.51 in13 mm· 68%90%RainSSE 6 mph9 km/h
SundayAug 1685°F29°C
Feels 91°F33°C
75°F24°C0.23 in5.8 mm· 41%80%Light RainW 7 mph10 km/h
MondayAug 1779°F26°C69°F21°C0.07 in1.7 mm· 20%69%ShowersNNE 6 mph10 km/h
TuesdayAug 1884°F29°C64°F18°C0.01 in0.2 mm· 4%50%Partly CloudySSW 4 mph7 km/h
WednesdayAug 1986°F30°C
Feels 90°F32°C
70°F21°C0.1 in2.6 mm· 20%68%ShowersSSW 7 mph12 km/h
ThursdayAug 2083°F28°C71°F21°C0.09 in2.3 mm· 15%53%ShowersW 7 mph12 km/h
FridayAug 2183°F28°C68°F20°C0.04 in1 mm· 11%39%DrizzleW 6 mph10 km/h
SaturdayAug 2283°F28°C67°F19°C0.05 in1.2 mm· 10%40%DrizzleSSW 6 mph10 km/h
SundayAug 2382°F28°C67°F19°C0.06 in1.5 mm· 13%42%DrizzleW 6 mph10 km/h
MondayAug 2482°F28°C66°F19°C0.05 in1.3 mm· 11%44%DrizzleNNW 6 mph10 km/h
TuesdayAug 2582°F28°C65°F18°C0.05 in1.3 mm· 9%38%ClearNNW 6 mph10 km/h
WednesdayAug 2681°F27°C65°F18°C0.05 in1.2 mm· 12%43%DrizzleSSE 6 mph10 km/h

Nearby Cities

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

PatternExampleDescription
/weather/{country}/{city}//weather/united-states/san-francisco/City forecast (canonical URL)
/weather/{city}//weather/tokyo/Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}//weather/united-states/california/san-francisco/With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}/weather/nearby?lat=48.1&lon=11.5Find nearest city by coordinates
/weather/{country}//weather/germany/Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 41.6736°N, 88.0017°W·Elevation: 185m·Timezone: America/Chicago·Population: 16,788