Waukegan, IL Weather - Extended Forecast

Monday

Chance of thunderstorms

High:
90°F

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 90. Heat index values as high as 101. South wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.

Monday Night

Chance of thunderstorms

Overnight low:
69°F

A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 69. South southwest wind 10 to 15 mph becoming north northwest after midnight.

Tuesday

Mostly sunny

High:
80°F

Mostly sunny, with a high near 80.

Tuesday Night

Mostly clear

Overnight low:
64°F

Mostly clear, with a low around 64.

Wednesday

Sunny

High:
78°F

Wednesday Night

Mostly clear

Overnight low:
64°F

Thursday

Mostly sunny

High:
82°F

Thursday Night

Partly cloudy

Overnight low:
67°F

Friday

Partly sunny

High:
83°F

Friday Night

Chance of showers

Overnight low:
68°F

Saturday

Mostly sunny

High:
82°F