Strong Storms and Heavy Rainfall Threats; Dangerous Heat for Southern Plains into the Southwest

Thunderstorms, some severe, will impact areas of the Plains into the Midwest today. Rainfall can be locally heavy as well from these storms with isolated instances of flash flooding. Monsoonal flow will enhance rainfall across the Four Corners into the central Rockies today. Meanwhile, summer heat continues for the southern Plains, Southwest into southern California. Read More >

Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

63°F

17°C

Humidity	90%
Wind Speed	E 5 mph
Barometer	30.08 in (1018.4 mb)
Dewpoint	60°F (16°C)
Visibility	10.00 mi
Last update	25 Aug 6:54 am CDT

More Information:

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

Extended Forecast for

Grafton IL

Today
High: 85 °F
Mostly Sunny
Tonight
Low: 68 °F
Mostly Cloudy
Wednesday
High: 89 °F
Mostly Sunny
then Isolated
T-storms
Wednesday Night
Low: 67 °F
Partly Cloudy
Thursday
High: 86 °F
Sunny
Thursday Night
Low: 64 °F
Mostly Clear
Friday
High: 85 °F
Sunny
Friday Night
Low: 64 °F
Mostly Clear
Saturday
High: 88 °F
Mostly Sunny

Detailed Forecast

Today

Mostly sunny, with a high near 85. Southeast wind around 6 mph.

Tonight

Mostly clear during the early evening, then becoming mostly cloudy, with a low around 68. East wind around 5 mph becoming calm in the evening.

Wednesday

Isolated showers and thunderstorms after 4pm. Mostly sunny, with a high near 89. Calm wind becoming west 5 to 8 mph in the morning. Chance of precipitation is 20%.

Wednesday Night

Partly cloudy, with a low around 67. West wind around 5 mph becoming light and variable after midnight.

Thursday

Sunny, with a high near 86. North wind 5 to 8 mph.

Thursday Night

Mostly clear, with a low around 64.

Friday

Sunny, with a high near 85.

Friday Night

Mostly clear, with a low around 64.

Saturday

Mostly sunny, with a high near 88.