Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Central U.S. and Northeast; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Severe thunderstorms are forecast from parts of the central High Plains into the Upper Midwest, and across parts of the Northeast. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

Hazardous Weather Conditions

Current conditions at

Sterling Rockfalls (KSQI)

Lat: 41.74°NLon: 89.67°WElev: 643ft.

Fair

82°F

28°C

Humidity	79%
Wind Speed	Calm
Barometer	29.93 in (1012.8 mb)
Dewpoint	75°F (24°C)
Visibility	10.00 mi
Heat Index	89°F (32°C)
Last update	30 Jun 10:56 pm CDT

More Information:

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

Extended Forecast for

4 Miles NE Lyndon IL

Extreme Heat Warning June 30, 11:07pm until July 2, 10:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning June 30, 11:07pm until July 2, 10:00pm
NOW until 10:00pm Thu
Extreme Heat Warning
Tonight
Low: 75 °F
Mostly Clear
Wednesday
High: 94 °F
Sunny
Wednesday Night
Low: 76 °F
Mostly Clear
then Slight
Chance
T-storms
Thursday
High: 95 °F
Hot
Thursday Night
Low: 73 °F
Chance
T-storms then
Chance
Showers
Friday
High: 93 °F
Showers
Likely
Friday Night
Low: 72 °F
Showers
Likely
Independence Day
High: 91 °F
Chance
T-storms then
Showers
Likely

Detailed Forecast

Tonight

Mostly clear, with a low around 75. Southwest wind around 10 mph.

Wednesday

Sunny, with a high near 94. Heat index values as high as 107. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

Wednesday Night

A slight chance of showers and thunderstorms before 2am, then a slight chance of showers after 4am. Mostly clear, with a low around 76. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

Thursday

Sunny and hot, with a high near 95. Heat index values as high as 106. Southwest wind 5 to 15 mph.

Thursday Night

A chance of showers and thunderstorms between 7pm and 10pm, then a chance of showers after 10pm. Partly cloudy, with a low around 73. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.

Friday

A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 93. Chance of precipitation is 70%.

Friday Night

Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72. Chance of precipitation is 60%.

Independence Day

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 91. Chance of precipitation is 70%.

Saturday Night

Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 70. Chance of precipitation is 70%.

Sunday

A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88.

Sunday Night

Partly cloudy, with a low around 67.

Monday

Mostly sunny, with a high near 88.

Monday Night

Partly cloudy, with a low around 67.

Tuesday

Mostly sunny, with a high near 89.