Illinois · NWS LOT office

Westmont, IL weather

It is 59°F and clear at Chicago, Chicago Midway Airport as of Oct 28, 1:00 AM CDT. Overnight: Partly Cloudy, low near 54°F, 2% chance of precipitation. Forecast from the National Weather Service, issued Oct 28, 1:20 AM CDT.

Updated Oct 28, 1:30 AM CDT (snapshot)

Current conditions

Temperature

59°F

Clear

Wind

S 6 mph

Humidity 67% · dew point 48°F

Pressure · visibility

30.19 inHg

Visibility 10 mi

Observed at Chicago, Chicago Midway Airport (KMDW), Oct 28, 1:00 AM CDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the Westmont forecast zone right now.

Around the NWS LOT forecast area

No active alerts in zones served by the LOT office near Westmont.

From the alert snapshot of Oct 28, 2026, 2:15 AM EDT. No alerts are active anywhere in Illinois.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for Westmont (local time)
TimeTempForecastPrecip. chanceWind
Wed 1 AM58°FMostly Cloudy0%S 5 mph
Wed 2 AM57°FPartly Cloudy0%S 5 mph
Wed 3 AM56°FPartly Cloudy0%SSW 5 mph
Wed 4 AM55°FMostly Clear0%SSW 5 mph
Wed 5 AM54°FMostly Clear0%SSW 5 mph
Wed 6 AM53°FSunny0% 0 mph
Wed 7 AM53°FSunny0%SSW 5 mph
Wed 8 AM54°FSunny0%S 5 mph
Wed 9 AM58°FSunny0%SSW 5 mph
Wed 10 AM62°FSunny0%SSW 5 mph
Wed 11 AM66°FSunny0%SSW 10 mph
Wed 12 PM68°FSunny0%SSW 10 mph
Wed 1 PM70°FSunny0%SSW 10 mph
Wed 2 PM72°FSunny0%SSW 15 mph
Wed 3 PM73°FSunny0%SSW 15 mph
Wed 4 PM73°FSunny0%SSW 15 mph
Wed 5 PM72°FSunny0%S 10 mph
Wed 6 PM70°FMostly Clear0%S 10 mph
Wed 7 PM67°FMostly Clear0%S 10 mph
Wed 8 PM66°FMostly Clear0%S 10 mph
Wed 9 PM65°FMostly Clear0%S 10 mph
Wed 10 PM65°FMostly Clear0%S 10 mph
Wed 11 PM64°FMostly Clear0%S 10 mph
Thu 12 AM64°FPartly Cloudy0%SSW 10 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Westmont can differ.

7-day forecast

Overnight

Low 54°F

Partly cloudy, with a low around 54. South southwest wind around 5 mph.

Wednesday

High 74°F·Low 60°F

Sunny. High near 74, with temperatures falling to around 72 in the afternoon. South southwest wind 0 to 15 mph.

Wednesday Night: A slight chance of rain showers after 5am. Partly cloudy, with a low around 60. South southwest wind 10 to 15 mph. Chance of precipitation is 20%.

Thursday

High 70°F·Low 47°F

A slight chance of rain showers before 2pm. Partly sunny, with a high near 70. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

Thursday Night: Mostly clear, with a low around 47. North wind around 5 mph, with gusts as high as 10 mph.

Friday

High 65°F·Low 52°F

Partly sunny, with a high near 65.

Friday Night: A chance of rain showers between 7pm and 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 52.

Saturday

High 62°F·Low 52°F

A chance of showers and thunderstorms. Cloudy, with a high near 62.

Saturday Night: A chance of rain showers. Cloudy, with a low around 52.

Sunday

High 66°F·Low 53°F

A chance of rain showers. Mostly cloudy, with a high near 66.

Sunday Night: A chance of rain showers. Mostly cloudy, with a low around 53.

Monday

High 66°F·Low 55°F

A chance of rain showers. Mostly cloudy, with a high near 66.

Monday Night: A chance of rain showers. Mostly cloudy, with a low around 55.

Tuesday

High 67°F

Rain showers likely. Mostly cloudy, with a high near 67.

Nearby cities

Larger cities in the area

Other cities in DuPage County

See every city we cover in Illinois, or check all active alerts.

About this forecast

Forecast office
Westmont is served by the National Weather Service LOT forecast office, forecast zone ILZ013, county zone ILC043.
Location used
The Census Bureau's internal point for Westmont (41.7944, -87.9729), in DuPage County. Population: 24,308 (2024 estimate), number 94 of the 121 Illinois cities on this site.
Radar
Nearest NWS radar: KLOT. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/41.7944,-87.9729 (forecast issued Oct 28, 1:20 AM CDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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