An Active Start to the Week

A slow moving and large-scale system will produce widespread rain and thunderstorms the next few days across the central and southern Plains into the Mid to Lower Mississippi Valley. Severe storms will be common across Texas through Tuesday before spreading eastward. The locally heavy rain will produce possible flooding and have a similar transition to the east through midweek. Read More >

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Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

65°F

18°C

Humidity	45%
Wind Speed	E 12 mph
Barometer	30.19 in (1022.2 mb)
Dewpoint	43°F (6°C)
Visibility	10.00 mi
Last update	23 May 6:54 pm CDT

More Information:

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

Extended Forecast for

Decatur IL

Tonight

Partly Cloudy
Low: 50 °F
Tuesday

Mostly Sunny
High: 72 °F
Tuesday
Night

Mostly Cloudy
then Showers
Likely
Low: 62 °F
Wednesday

Showers
High: 78 °F
Wednesday
Night

Showers
Likely
Low: 62 °F
Thursday

Chance
T-storms
High: 69 °F
Thursday
Night

Chance
Showers
Low: 55 °F
Friday

Mostly Sunny
High: 70 °F
Friday
Night

Mostly Clear
Low: 55 °F

Detailed Forecast

Tonight

Partly cloudy, with a low around 50. East northeast wind 6 to 8 mph, with gusts as high as 17 mph.

Tuesday

Mostly sunny, with a high near 72. East wind 8 to 13 mph, with gusts as high as 21 mph.

Tuesday Night

Showers likely and possibly a thunderstorm after 1am. Increasing clouds, with a low around 62. East wind 10 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday

Showers, with thunderstorms also possible after 10am. High near 78. South southeast wind 14 to 17 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 62. South wind 8 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Thursday

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 69. South southwest wind 7 to 10 mph, with gusts as high as 21 mph.

Thursday Night

A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 55. West wind around 8 mph, with gusts as high as 18 mph.

Friday

Mostly sunny, with a high near 70.

Friday Night

Mostly clear, with a low around 55.

Saturday

Mostly sunny, with a high near 79.

Saturday Night

Partly cloudy, with a low around 64.