Current Conditions

Westmont, Illinois

74°F23°C
Rain

Wind

SSW 7 mph11 km/h

Humidity

65%

Cloud Cover

95%

As of Wednesday, September 9, 2026 at 1:00 AM CDT

Today's Outlook

Day

Overcast and warm, with a high of 80°F27°C and morning low of 71°F22°C. Breezy from the WSW at 8 to 9 mph13 to 15 km/h. 98% chance of rain throughout the day. Humid.

Night

Mostly cloudy, with a low around 73°F23°C. Breezy from the SW at 7 mph11 km/h. 34% chance of drizzle before dawn.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
RainHigh 80°F27°CLow 71°F22°CPrecip 0.33 in8.3 mm98%Cloud 87%Wind WSW 7 mph12 km/hWednesday: Overcast and warm, with a high of 80°F27°C and morning low of 71°F22°C. Breezy from the WSW at 8 to 9 mph13 to 15 km/h. 98% chance of rain throughout the day. Humid. Wednesday Night: Mostly cloudy, with a low around 73°F23°C. Breezy from the SW at 7 mph11 km/h. 34% chance of drizzle before dawn.
Partly CloudyHigh 76°F25°CLow 64°F18°CPrecip 0 in0 mmCloud 74%Wind NNE 6 mph9 km/hThursday: Overcast and warm, with a high of 76°F25°C and morning low of 67°F20°C. Light wind from the NNE around 6 mph9 km/h. Thursday Night: Mostly cloudy, with a low around 64°F18°C. Light wind from the N around 6 mph9 km/h.
ClearHigh 81°F27°CLow 58°F15°CPrecip 0 in0.1 mm2%Cloud 19%Wind SE 5 mph8 km/hFriday: Partly cloudy and warm, with a high of 81°F27°C and morning low of 58°F15°C. Light wind from the SE around 5 mph8 km/h. Friday Night: Mostly clear, with a low around 60°F15°C. Light wind from the SE around 5 mph8 km/h.
DrizzleHigh 85°F29°CLow 65°F18°CPrecip 0.03 in0.7 mm17%Cloud 49%Wind SW 7 mph11 km/hSaturday: Mostly cloudy and warm, with a high of 85°F29°C and morning low of 65°F18°C. Breezy from the SW at 8 to 9 mph13 to 15 km/h. 14% chance of drizzle in the afternoon. Humid. Saturday Night: Partly cloudy, with a low around 66°F19°C. Light wind from the SSW around 6 mph9 km/h. 17% chance of drizzle in the evening.
DrizzleHigh 76°F24°CLow 63°F17°CPrecip 0.04 in1.1 mm10%Cloud 37%Wind N 7 mph11 km/hSunday: Partly cloudy and warm, with a high of 76°F24°C and morning low of 64°F18°C. Breezy from the N at 7 to 8 mph12 to 13 km/h. Sunday Night: Partly cloudy, with a low around 63°F17°C. Breezy from the N at 6 to 7 mph10 to 11 km/h. 10% chance of drizzle throughout the night.
ShowersHigh 79°F26°CLow 60°F16°CPrecip 0.1 in2.5 mm21%Cloud 57%Wind SE 9 mph14 km/hMonday: Mostly cloudy and warm, with a high of 79°F26°C and morning low of 60°F16°C. Breezy from the SE at 9 to 11 mph14 to 18 km/h. 21% chance of showers throughout the day. Monday Night: Partly cloudy, with a low around 60°F16°C. Breezy from the SSE at 9 to 12 mph14 to 20 km/h. 13% chance of drizzle throughout the night.
Light RainHigh 83°F28°CLow 70°F21°CPrecip 0.17 in4.2 mm30%Cloud 72%Wind SW 10 mph16 km/hTuesday: Mostly cloudy and warm, with a high of 83°F28°C and morning low of 70°F21°C. Breezy from the SW at 10 to 11 mph17 to 18 km/h. 27% chance of light rain throughout the day. Tuesday Night: Mostly cloudy, with a low around 71°F22°C. Breezy from the SSW at 9 to 13 mph15 to 21 km/h. 30% chance of light rain throughout the night.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
WednesdaySep 980°F27°C71°F22°C0.33 in8.3 mm· 98%87%RainWSW 7 mph12 km/h
ThursdaySep 1076°F25°C64°F18°C0 in0 mm· —74%Partly CloudyNNE 6 mph9 km/h
FridaySep 1181°F27°C58°F15°C0 in0.1 mm· 2%19%ClearSE 5 mph8 km/h
SaturdaySep 1285°F29°C65°F18°C0.03 in0.7 mm· 17%49%DrizzleSW 7 mph11 km/h
SundaySep 1376°F24°C63°F17°C0.04 in1.1 mm· 10%37%DrizzleN 7 mph11 km/h
MondaySep 1479°F26°C60°F16°C0.1 in2.5 mm· 21%57%ShowersSE 9 mph14 km/h
TuesdaySep 1583°F28°C70°F21°C0.17 in4.2 mm· 30%72%Light RainSW 10 mph16 km/h
WednesdaySep 1678°F26°C66°F19°C0.26 in6.6 mm· 39%71%Light RainE 6 mph10 km/h
ThursdaySep 1783°F28°C69°F21°C0.19 in4.8 mm· 22%53%ShowersSSW 9 mph14 km/h
FridaySep 1877°F25°C65°F18°C0.17 in4.2 mm· 21%48%ShowersW 9 mph14 km/h
SaturdaySep 1972°F22°C60°F15°C0.2 in5 mm· 28%55%ShowersWNW 8 mph13 km/h
SundaySep 2068°F20°C55°F13°C0.14 in3.6 mm· 21%53%ShowersN 8 mph13 km/h
MondaySep 2168°F20°C53°F12°C0.09 in2.2 mm· 12%52%DrizzleNE 7 mph11 km/h
TuesdaySep 2270°F21°C53°F12°C0.08 in2.1 mm· 12%55%DrizzleE 7 mph12 km/h
WednesdaySep 2370°F21°C55°F13°C0.13 in3.3 mm· 18%58%ShowersESE 7 mph12 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: 41.7959°N, 87.9756°W·Elevation: 228m·Timezone: America/Chicago·Population: 24,941