National Weather Service Forecast for: Arlington Heights IL
Issued by: National Weather Service Chicago, IL
Updated: 2:06 pm CDT Jul 13, 2025
 
Tonight

Tonight: Partly cloudy, with a low around 65. West wind around 5 mph becoming south southwest after midnight.
Partly Cloudy

 Monday

Monday: Sunny, with a high near 88. West southwest wind around 5 mph.
Sunny

 Monday
Night
Monday Night: Mostly clear, with a low around 68. Southwest wind around 5 mph becoming southeast in the evening.
Mostly Clear

 Tuesday

Tuesday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Sunny, with a high near 90. South wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 20%.
Sunny then
Slight Chance
T-storms
 Tuesday
Night
Tuesday Night: A slight chance of thunderstorms before 1am, then a slight chance of showers and thunderstorms between 1am and 4am, then a slight chance of showers after 4am. Partly cloudy, with a low around 72. South wind around 5 mph. Chance of precipitation is 20%.
Slight Chance
T-storms

 Wednesday

Wednesday: A chance of showers, with thunderstorms also possible after 7am. Partly sunny, with a high near 88. Chance of precipitation is 40%.
Chance
Showers then
Chance
T-storms
 Wednesday
Night
Wednesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Chance
T-storms

 Thursday

Thursday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 83.
Chance
Showers then
Chance
T-storms
 Thursday
Night
Thursday Night: A chance of showers before 1am. Mostly cloudy, with a low around 65.
Chance
Showers
Lo 65 °F Hi 88 °F Lo 68 °F Hi 90 °F Lo 72 °F Hi 88 °F Lo 71 °F Hi 83 °F Lo 65 °F

Hazardous Weather Outlook
 

Tonight
 
 Partly cloudy, with a low around 65. West wind around 5 mph becoming south southwest after midnight.
Monday
 
 Sunny, with a high near 88. West southwest wind around 5 mph.
Monday Night
 
 Mostly clear, with a low around 68. Southwest wind around 5 mph becoming southeast in the evening.
Tuesday
 
 A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Sunny, with a high near 90. South wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 20%.
Tuesday Night
 
 A slight chance of thunderstorms before 1am, then a slight chance of showers and thunderstorms between 1am and 4am, then a slight chance of showers after 4am. Partly cloudy, with a low around 72. South wind around 5 mph. Chance of precipitation is 20%.
Wednesday
 
 A chance of showers, with thunderstorms also possible after 7am. Partly sunny, with a high near 88. Chance of precipitation is 40%.
Wednesday Night
 
 A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Thursday
 
 A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 83.
Thursday Night
 
 A chance of showers before 1am. Mostly cloudy, with a low around 65.
Friday
 
 Partly sunny, with a high near 79.
Friday Night
 
 Partly cloudy, with a low around 64.
Saturday
 
 Partly sunny, with a high near 83.
Saturday Night
 
 A chance of showers. Mostly cloudy, with a low around 67.
Sunday
 
 A chance of showers. Mostly sunny, with a high near 84.

 

Forecast from NOAA-NWS for Arlington Heights IL.