Excessive Rainfall Potential for the Southeast; Heat Expands for Center of the Nation; Critical Fire Weather for Pacific Northwest

Flash flooding threatens areas from the Tennessee Valley to the Carolinas as storms repeat along a stalled front. Monsoonal storms may trigger flooding in the Southwest. Dangerous heat expands across the Desert Southwest, Plains, mid-Mississippi Valley and Southern Tier. Critical fire weather for interior Pacific Northwest. Cooler, drier air brings brief relief to the Great Lakes and Northeast. 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.

Fog/Mist

71°F

22°C

Humidity	100%
Wind Speed	Calm
Barometer	29.94 in
Dewpoint	71°F (22°C)
Visibility	5.00 mi
Last update	26 Jul 4:55 am CDT

More Information:

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

Detailed forecast for

Grundy County

Early This Morning

Mostly cloudy. Patchy fog. Temperatures around 70. South winds around 5 mph.

Today

Mostly cloudy in the morning, then becoming partly cloudy. Patchy fog early in the morning. Humid. Highs in the upper 80s. South winds 5 to 10 mph. Heat index values up to 103.

Tonight

Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms after midnight. Humid with lows in the mid 70s. Southwest winds around 5 mph. Chance of precipitation 30 percent. Heat index values up to 100 early in the evening.

Monday

Mostly cloudy in the morning, then clearing. A chance of showers and thunderstorms, mainly in the morning. Humid with highs in the lower 90s. Southwest winds 5 to 10 mph, increasing to 10 to 15 mph in the afternoon. Chance of precipitation 40 percent. Heat index values up to 106.

Monday Night

Mostly clear in the evening, then becoming partly cloudy. A chance of showers and thunderstorms in the evening. Humid with lows in the lower 70s. West winds 5 to 10 mph, becoming northwest after midnight. Chance of precipitation 30 percent. Heat index values up to 101 early in the evening.

Tuesday

Partly cloudy in the morning, then clearing. Humid with highs in the mid 80s. North winds 5 to 10 mph.

Tuesday Night

Mostly clear. Lows in the lower 60s.

Wednesday

Sunny. Highs in the lower 80s.

Wednesday Night

Clear. Lows in the lower 60s.

Thursday

Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 80s.

Thursday Night

Partly cloudy. Lows in the mid 60s.