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

Sterling Rockfalls (KSQI)

Lat: 41.74°NLon: 89.67°WElev: 643ft.

Fair

88°F

31°C

Humidity	80%
Wind Speed	SW 5 mph
Barometer	29.90 in (1012.0 mb)
Dewpoint	81°F (27°C)
Visibility	10.00 mi
Heat Index	106°F (41°C)
Last update	26 Jul 12:56 pm CDT

More Information:

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

Extended Forecast for

Harmon 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: 91 °F
Mostly Cloudy
Tonight
Low: 75 °F
Mostly Cloudy
then Chance
T-storms
Monday
High: 92 °F
Chance
T-storms
Monday Night
Low: 70 °F
Slight Chance
T-storms then
Partly Cloudy
Tuesday
High: 86 °F
Sunny
Tuesday Night
Low: 62 °F
Mostly Clear
Wednesday
High: 85 °F
Sunny
Wednesday Night
Low: 62 °F
Clear

Detailed Forecast

This Afternoon

Mostly cloudy, with a high near 91. Heat index values as high as 106. Southwest wind 5 to 10 mph.

Tonight

A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 75. South southwest wind around 5 mph becoming east southeast 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. Mostly sunny, with a high near 92. Heat index values as high as 106. Southeast wind 10 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 40%.

Monday Night

A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 70. West wind 5 to 10 mph becoming north northeast after midnight. Winds could gust as high as 15 mph.

Tuesday

Sunny, with a high near 86. North wind around 10 mph, with gusts as high as 15 mph.

Tuesday Night

Mostly clear, with a low around 62.

Wednesday

Sunny, with a high near 85.

Wednesday Night

Clear, with a low around 62.

Thursday

Sunny, with a high near 86.

Thursday Night

Mostly cloudy, with a low around 66.