Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Joliet Regional Airport (KJOT)

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

Overcast

65°F

18°C

Humidity	100%
Wind Speed	E 6 mph
Barometer	30.01 in
Dewpoint	65°F (18°C)
Visibility	10.00 mi
Last update	19 Sep 7:55 am CDT

More Information:

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

Detailed forecast for

Grundy County

Today

Cloudy. Showers with thunderstorms likely in the morning, then a slight chance of showers and thunderstorms early in the afternoon. A chance of showers and thunderstorms late. Highs in the lower 80s. East winds 5 to 10 mph, becoming southeast in the afternoon. Chance of precipitation 90 percent.

Tonight

Showers with thunderstorms likely. Humid with lows in the upper 60s. South winds around 5 mph, becoming northwest after midnight. Chance of precipitation 90 percent.

Sunday

A chance of thunderstorms early in the morning. Showers likely. A slight chance of thunderstorms in the late morning and afternoon. Highs in the lower 70s. Northeast winds 10 to 15 mph. Gusts up to 25 mph in the afternoon. Chance of precipitation 70 percent.

Sunday Night

Mostly cloudy. A chance of showers. Lows in the upper 50s. Northeast winds 10 to 15 mph. Gusts up to 25 mph in the evening. Chance of precipitation 50 percent.

Monday

Mostly cloudy. Showers likely, mainly in the morning. Highs in the upper 60s. Northeast winds 10 to 15 mph. Gusts up to 25 mph in the afternoon. Chance of precipitation 60 percent.

Monday Night

Mostly cloudy with a 20 percent chance of showers. Lows in the lower 50s.

Tuesday

Mostly cloudy with a 20 percent chance of showers. Highs in the mid 60s.

Tuesday Night

Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 50s.

Wednesday

Partly cloudy in the morning, then becoming mostly cloudy. Highs in the upper 60s.

Wednesday Night

Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 50s.

Thursday

Mostly cloudy. Highs around 70.