Illinois · NWS LOT office
St. Charles, IL weather
It is 52°F and partly cloudy at Chicago / West Chicago, Dupage Airport as of Oct 28, 4:00 AM CDT. Overnight: Mostly Clear, low near 50°F, 1% chance of precipitation. Forecast from the National Weather Service, issued Oct 28, 3:35 AM CDT.
Current conditions
Temperature
52°F
Partly Cloudy
Wind
Calm
Humidity 87% · dew point 48°F
Pressure · visibility
30.20 inHg
Visibility 10 mi
Observed at Chicago / West Chicago, Dupage Airport (KDPA), Oct 28, 4:00 AM CDT. Station readings can lag or be missing.
Alerts for this area
No active NWS alerts cover the St. Charles forecast zone right now.
Around the NWS LOT forecast area
No active alerts in zones served by the LOT office near St. Charles.
From the alert snapshot of Oct 28, 2026, 5:12 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
| Time | Temp | Forecast | Precip. chance | Wind |
|---|---|---|---|---|
| Wed 6 AM | 51°F | Sunny | 1% | 0 mph |
| Wed 7 AM | 50°F | Sunny | 0% | 0 mph |
| Wed 8 AM | 51°F | Sunny | 0% | S 5 mph |
| Wed 9 AM | 55°F | Sunny | 0% | S 5 mph |
| Wed 10 AM | 61°F | Sunny | 0% | S 5 mph |
| Wed 11 AM | 65°F | Sunny | 0% | S 10 mph |
| Wed 12 PM | 68°F | Sunny | 0% | S 10 mph |
| Wed 1 PM | 71°F | Sunny | 0% | S 10 mph |
| Wed 2 PM | 73°F | Sunny | 0% | S 10 mph |
| Wed 3 PM | 74°F | Sunny | 0% | S 15 mph |
| Wed 4 PM | 73°F | Sunny | 0% | S 10 mph |
| Wed 5 PM | 71°F | Mostly Sunny | 1% | S 10 mph |
| Wed 6 PM | 68°F | Partly Cloudy | 1% | S 10 mph |
| Wed 7 PM | 65°F | Mostly Clear | 2% | S 10 mph |
| Wed 8 PM | 64°F | Mostly Clear | 2% | S 10 mph |
| Wed 9 PM | 63°F | Mostly Clear | 2% | S 10 mph |
| Wed 10 PM | 62°F | Mostly Clear | 2% | S 10 mph |
| Wed 11 PM | 62°F | Mostly Clear | 3% | S 10 mph |
| Thu 12 AM | 61°F | Mostly Clear | 5% | S 10 mph |
| Thu 1 AM | 61°F | Mostly Cloudy | 9% | SSW 10 mph |
| Thu 2 AM | 61°F | Mostly Cloudy | 7% | SSW 10 mph |
| Thu 3 AM | 61°F | Mostly Cloudy | 12% | SSW 10 mph |
| Thu 4 AM | 60°F | Slight Chance Rain Showers | 17% | SSW 10 mph |
| Thu 5 AM | 59°F | Slight Chance Rain Showers | 22% | 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 St. Charles can differ.
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7-day forecast
Overnight
Low 50°F
Mostly clear, with a low around 50. South wind 0 to 5 mph.
Wednesday
High 74°F·Low 58°F
Sunny. High near 74, with temperatures falling to around 71 in the afternoon. South wind 0 to 15 mph, with gusts as high as 25 mph.
Wednesday Night: A slight chance of rain showers after 4am. Partly cloudy, with a low around 58. South southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Thursday
High 70°F·Low 42°F
A chance of rain showers before 9am. Partly sunny, with a high near 70. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Thursday Night: Mostly clear, with a low around 42. North wind around 5 mph, with gusts as high as 10 mph.
Friday
High 64°F·Low 50°F
Partly sunny, with a high near 64.
Friday Night: A chance of rain showers between 7pm and 1am, then a chance of showers and thunderstorms. Cloudy, with a low around 50.
Saturday
High 62°F·Low 50°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 50.
Sunday
High 66°F·Low 51°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 51.
Monday
High 66°F·Low 53°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 53.
Tuesday
High 67°F
Rain showers likely. Mostly cloudy, with a high near 67.
Nearby cities
- Geneva, IL 3 mi
- South Elgin, IL 5 mi
- West Chicago, IL 5 mi
- Batavia, IL 5 mi
- Bartlett, IL 7 mi
- Elgin, IL 8 mi
- Carol Stream, IL 9 mi
- Hanover Park, IL 10 mi
Larger cities in the area
- Aurora, IL 11 mi · pop. 180,710
- Chicago, IL 33 mi · pop. 2,721,308
- Milwaukee, WI 81 mi · pop. 563,531
- Madison, WI 99 mi · pop. 285,300
Other cities in Kane County
See every city we cover in Illinois, or check all active alerts.
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About this forecast
- Forecast office
- St. Charles is served by the National Weather Service LOT forecast office, forecast zone ILZ012, county zone ILC089.
- Location used
- The Census Bureau's internal point for St. Charles (41.9194, -88.3107), in Kane County. Population: 33,482 (2024 estimate), number 56 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/41.9194,-88.3107 (forecast issued Oct 28, 3:35 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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