Heat Across the Center of the Nation; Severe Thunderstorms Across the Great Lakes and Ohio Valley

Heat expands across the Desert Southwest, Plains, Mississippi Valley and Midwest into Monday. Fire weather concerns continue for portions of the Intermountain West. Active monsoonal moisture fuels thunderstorms over the Southwest with possible flash flooding. Tropical cyclone Fausto in the Pacific, should weaken as it approaches Hawaii; Dangerous surf, swells and rip currents are expected. Read More >

Hazardous Weather Conditions

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Overcast

86°F

30°C

Humidity	79%
Wind Speed	SE 7 mph
Barometer	29.91 in
Dewpoint	79°F (26°C)
Visibility	7.00 mi
Heat Index	99°F (37°C)
Last update	26 Jul 1:17 pm CDT

More Information:

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

Extended Forecast for

3 Miles NNW Marseilles IL

Heat Advisory until July 26, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory until July 26, 08:00pm
NOW until 8:00pm Sun
Heat Advisory
This Afternoon
High: 90 °F
Partly Sunny
Tonight
Low: 76 °F
Mostly Cloudy
then Chance
T-storms
Monday
High: 91 °F
Chance
T-storms then
Slight Chance
T-storms
Monday Night
Low: 71 °F
Slight Chance
T-storms
Tuesday
High: 84 °F
Mostly Sunny
Tuesday Night
Low: 63 °F
Mostly Clear
Wednesday
High: 84 °F
Sunny
Wednesday Night
Low: 63 °F
Clear

Detailed Forecast

This Afternoon

Partly sunny, with a high near 90. Heat index values as high as 102. South southwest wind around 5 mph, with gusts as high as 15 mph.

Tonight

A 40 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 76. Southwest wind around 5 mph becoming east after midnight. Winds could gust as high as 10 mph.

Monday

A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 91. Heat index values as high as 104. Southeast wind 10 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 50%.

Monday Night

A 20 percent chance of showers and thunderstorms before 4am. Partly cloudy, with a low around 71. West southwest wind around 10 mph becoming north after midnight. Winds could gust as high as 20 mph.

Tuesday

Mostly sunny, with a high near 84. North wind around 10 mph, with gusts as high as 20 mph.

Tuesday Night

Mostly clear, with a low around 63.

Wednesday

Sunny, with a high near 84.

Wednesday Night

Clear, with a low around 63.

Thursday

Sunny, with a high near 85.

Thursday Night

Mostly cloudy, with a low around 67.