National Weather Service Forecast for: Elgin IL
Issued by: National Weather Service Chicago, IL
Updated: 1:22 pm CDT Oct 20, 2026
 
This
Afternoon
This Afternoon: Sunny, with a high near 68. Southeast wind around 5 mph becoming calm.
Sunny

 Tonight

Tonight: Patchy fog after 3am. Otherwise, mostly clear, with a low around 42. East wind around 5 mph becoming calm in the evening.
Mostly Clear
then Patchy
Fog
 Wednesday

Wednesday: Patchy fog before 8am. Otherwise, sunny, with a high near 71. Calm wind becoming west southwest around 5 mph.
Patchy Fog
then Sunny
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 48. Calm wind.
Mostly Clear

 Thursday

Thursday: Sunny, with a high near 72. Calm wind.
Sunny

 Thursday
Night
Thursday Night: Mostly clear, with a low around 48.
Mostly Clear

 Friday

Friday: Sunny, with a high near 69.
Sunny

 Friday
Night
Friday Night: Partly cloudy, with a low around 49.
Partly Cloudy

 Saturday

Saturday: Mostly sunny, with a high near 70.
Mostly Sunny
Hi 68 °F Lo 42 °F Hi 71 °F Lo 48 °F Hi 72 °F Lo 48 °F Hi 69 °F Lo 49 °F Hi 70 °F

 

This Afternoon
 
 Sunny, with a high near 68. Southeast wind around 5 mph becoming calm.
Tonight
 
 Patchy fog after 3am. Otherwise, mostly clear, with a low around 42. East wind around 5 mph becoming calm in the evening.
Wednesday
 
 Patchy fog before 8am. Otherwise, sunny, with a high near 71. Calm wind becoming west southwest around 5 mph.
Wednesday Night
 
 Mostly clear, with a low around 48. Calm wind.
Thursday
 
 Sunny, with a high near 72. Calm wind.
Thursday Night
 
 Mostly clear, with a low around 48.
Friday
 
 Sunny, with a high near 69.
Friday Night
 
 Partly cloudy, with a low around 49.
Saturday
 
 Mostly sunny, with a high near 70.
Saturday Night
 
 Mostly cloudy, with a low around 52.
Sunday
 
 Partly sunny, with a high near 72.
Sunday Night
 
 Mostly cloudy, with a low around 50.
Monday
 
 Partly sunny, with a high near 64.

 

Forecast from NOAA-NWS for Elgin IL.