National Weather Service Forecast for: Wheaton IL
Issued by: National Weather Service Chicago, IL
Updated: 12:21 am CST Dec 23, 2025
 
Overnight

Overnight: Mostly cloudy, with a steady temperature around 39. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Mostly Cloudy

 Tuesday

Tuesday: Partly sunny, with a high near 47. West southwest wind 5 to 10 mph becoming northwest in the afternoon.
Partly Sunny

 Tuesday
Night
Tuesday Night: Mostly cloudy, with a low around 30. Northwest wind 5 to 10 mph becoming east after midnight.
Mostly Cloudy

 Wednesday

Wednesday: A 30 percent chance of rain or drizzle after noon. Mostly cloudy, with a high near 41. East wind 5 to 10 mph becoming south southeast in the afternoon. Winds could gust as high as 15 mph.
Mostly Cloudy
then Chance
Rain
 Wednesday
Night
Wednesday Night: Rain or drizzle likely before midnight, then a slight chance of drizzle after midnight. Patchy fog. Otherwise, cloudy, with a low around 39. South southeast wind around 5 mph becoming north northwest in the evening. Winds could gust as high as 10 mph. Chance of precipitation is 60%.
Rain Likely
and Patchy
Fog
 Christmas
Day
Christmas Day: Cloudy, with a high near 45.
Cloudy

 Thursday
Night
Thursday Night: Rain likely, mainly after midnight. Cloudy, with a low around 41. Chance of precipitation is 60%.
Chance Rain
then Rain
Likely
 Friday

Friday: Mostly cloudy, with a high near 50.
Mostly Cloudy

 Friday
Night
Friday Night: Mostly cloudy, with a low around 38.
Mostly Cloudy
Lo 39 °F Hi 47 °F Lo 30 °F Hi 41 °F Lo 39 °F Hi 45 °F Lo 41 °F Hi 50 °F Lo 38 °F

 

Overnight
 
 Mostly cloudy, with a steady temperature around 39. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday
 
 Partly sunny, with a high near 47. West southwest wind 5 to 10 mph becoming northwest in the afternoon.
Tuesday Night
 
 Mostly cloudy, with a low around 30. Northwest wind 5 to 10 mph becoming east after midnight.
Wednesday
 
 A 30 percent chance of rain or drizzle after noon. Mostly cloudy, with a high near 41. East wind 5 to 10 mph becoming south southeast in the afternoon. Winds could gust as high as 15 mph.
Wednesday Night
 
 Rain or drizzle likely before midnight, then a slight chance of drizzle after midnight. Patchy fog. Otherwise, cloudy, with a low around 39. South southeast wind around 5 mph becoming north northwest in the evening. Winds could gust as high as 10 mph. Chance of precipitation is 60%.
Christmas Day
 
 Cloudy, with a high near 45.
Thursday Night
 
 Rain likely, mainly after midnight. Cloudy, with a low around 41. Chance of precipitation is 60%.
Friday
 
 Mostly cloudy, with a high near 50.
Friday Night
 
 Mostly cloudy, with a low around 38.
Saturday
 
 Mostly cloudy, with a high near 51.
Saturday Night
 
 Mostly cloudy, with a low around 27. Blustery.
Sunday
 
 Mostly sunny, with a high near 33. Breezy.
Sunday Night
 
 Partly cloudy, with a low around 14. Blustery.
Monday
 
 Mostly sunny, with a high near 26.

 

Forecast from NOAA-NWS for Wheaton IL.