Severe Thunderstorms and Possible Flooding in the East; Extreme Heat in the West.

Scattered severe storms with wind damage, large hail, and a few tornadoes will be possible this afternoon and evening across much of the Mid Atlantic and Southeast. Heavy rain may cause instances of flash flooding from eastern Kentucky to southern New York. Out west, dangerous heat will develop through Saturday, with record-breaking temperatures expected. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Sterling Rockfalls (KSQI)

Lat: 41.74°NLon: 89.67°WElev: 643ft.

N/A

Humidity	NA
Wind Speed	NA
Barometer	NA
Dewpoint	N/A
Visibility	NA
Last update	* Not a current observation *

More Information:

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

Extended Forecast for

Lanark IL

Tonight
Low: 55 °F
Patchy Smoke
then Partly
Cloudy
Saturday
High: 75 °F
Mostly Sunny
then Slight
Chance
Showers
Saturday Night
Low: 49 °F
Slight Chance
Showers then
Partly Cloudy
Sunday
High: 78 °F
Sunny
Sunday Night
Low: 57 °F
Mostly Clear
Monday
High: 87 °F
Mostly Sunny
Monday Night
Low: 66 °F
Partly Cloudy
Tuesday
High: 86 °F
Partly Sunny
then Chance
Showers
Tuesday Night
Low: 64 °F
Showers

Detailed Forecast

Tonight

Patchy smoke before 7pm. Partly cloudy, with a low around 55. Northwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.

Saturday

A 20 percent chance of showers after 3pm. Mostly sunny, with a high near 75. North wind 5 to 10 mph.

Saturday Night

A 20 percent chance of showers before 8pm. Partly cloudy, with a low around 49. North wind around 5 mph becoming southeast after midnight.

Sunday

Sunny, with a high near 78. East wind around 5 mph becoming northwest in the afternoon.

Sunday Night

Mostly clear, with a low around 57.

Monday

Mostly sunny, with a high near 87.

Monday Night

Partly cloudy, with a low around 66.

Tuesday

A 30 percent chance of showers after 1pm. Mostly cloudy, with a high near 86.

Tuesday Night

Showers and possibly a thunderstorm. Low around 64. Chance of precipitation is 80%.

Wednesday

Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy, with a high near 75. Chance of precipitation is 60%.

Wednesday Night

A 30 percent chance of showers. Mostly cloudy, with a low around 56.

Thursday

A 30 percent chance of showers. Mostly sunny, with a high near 72.

Thursday Night

Partly cloudy, with a low around 55.

Friday

Mostly sunny, with a high near 77.