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July 27, 2026: Intense Severe Storms Produce Multiple Tornadoes, Extensive Wind Damage, Damaging Hail, and Flooding

Hazardous Weather Conditions

Current conditions at

Joliet Regional Airport (KJOT)

Lat: 41.52° N Lon: 88.18° W Elev: 572 ft.

Mostly Cloudy

71°F

22°C

Humidity	82%
Wind Speed	SE 8 mph
Barometer	29.78 in
Dewpoint	65°F (18°C)
Visibility	10.00 mi
Last update	31 Jul 11:15 pm CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Detailed forecast for

Grundy County

Tonight

A slight chance of thunderstorms early in the evening. Showers. A chance of thunderstorms in the late evening and overnight. Lows in the upper 60s. Southeast winds 10 to 15 mph. Gusts up to 25 mph in the evening. Chance of precipitation 90 percent.

Saturday

Showers with a chance of thunderstorms. Breezy, humid. Near steady temperature around 70. East winds 10 to 15 mph, increasing to northeast 15 to 20 mph with gusts up to 30 mph in the afternoon. Chance of precipitation 90 percent.

Saturday Night

Cloudy. Showers likely with a slight chance of thunderstorms early in the evening, then a chance of showers in the late evening and early morning. A slight chance of showers late. Breezy. Near steady temperature in the upper 60s. North winds 15 to 20 mph, diminishing to 10 to 15 mph after midnight. Gusts up to 30 mph. Chance of precipitation 70 percent.

Sunday

Mostly cloudy. A slight chance of showers in the morning. Humid with highs in the mid 70s. North winds 10 to 15 mph with gusts up to 25 mph. Chance of precipitation 20 percent.

Sunday Night

Mostly clear. Lows in the lower 60s. North winds 5 to 10 mph.

Monday

Partly cloudy in the morning, then becoming mostly sunny. Highs in the upper 70s.

Monday Night

Mostly clear. Lows in the lower 60s.

Tuesday

Partly cloudy. A slight chance of showers in the afternoon. Highs in the lower 80s. Chance of precipitation 20 percent.

Tuesday Night

Mostly clear. Lows in the mid 60s.

Wednesday

Partly cloudy. Highs in the lower 80s.