National Weather Service

News Headlines

Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

82°F

28°C

Humidity	88%
Wind Speed	Vrbl 3 mph
Barometer	29.93 in (1012.8 mb)
Dewpoint	78°F (26°C)
Visibility	7.00 mi
Heat Index	91°F (33°C)
Last update	26 Jul 1:54 pm CDT

More Information:

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

Extended Forecast for

2 Miles NNW Blue Mound IL

Heat Advisory July 26, 02:40pm until July 27, 09:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory July 26, 02:40pm until July 27, 09:00pm
NOW until 9:00pm Mon
Heat Advisory
This Afternoon
High: 91 °F
Slight Chance
T-storms
Tonight
Low: 75 °F
Slight Chance
T-storms then
Partly Cloudy
Monday
High: 93 °F
Mostly Sunny
Monday Night
Low: 75 °F
Partly Cloudy
Tuesday
High: 87 °F
Decreasing
Clouds
Tuesday Night
Low: 63 °F
Mostly Clear
Wednesday
High: 84 °F
Sunny
Wednesday Night
Low: 63 °F
Clear

Detailed Forecast

This Afternoon

A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 91. Heat index values as high as 106. West southwest wind around 7 mph.

Tonight

A 20 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 75. South wind 3 to 5 mph.

Monday

Mostly sunny, with a high near 93. Heat index values as high as 110. South wind 5 to 13 mph, with gusts as high as 20 mph.

Monday Night

Partly cloudy, with a low around 75. South southwest wind 8 to 11 mph becoming northwest after midnight. Winds could gust as high as 16 mph.

Tuesday

Mostly cloudy, then gradually becoming sunny, with a high near 87. North wind 9 to 13 mph, with gusts as high as 17 mph.

Tuesday Night

Mostly clear, with a low around 63. North wind 5 to 10 mph becoming light north northeast after midnight. Winds could gust as high as 15 mph.

Wednesday

Sunny, with a high near 84. North northeast wind 5 to 9 mph.