Weather in Decatur, Illinois, United States

7-Day Detailed Weather Forecast for Decatur

This Afternoon

Temperature: 42°F

Wind Speed: 7 mph

Wind Direction: SW

Forecast: Mostly cloudy, with a high near 42. Southwest wind around 7 mph.

Tonight

Temperature: 35°F

Wind Speed: 5 to 8 mph

Wind Direction: S

Forecast: Mostly cloudy, with a low around 35. South wind 5 to 8 mph.

Sunday

Temperature: 59°F

Wind Speed: 8 to 14 mph

Wind Direction: S

Forecast: Partly sunny. High near 59, with temperatures falling to around 53 in the afternoon. South wind 8 to 14 mph, with gusts as high as 24 mph.

Sunday Night

Temperature: 50°F

Wind Speed: 9 to 14 mph

Wind Direction: SSW

Forecast: A chance of rain. Mostly cloudy. Low around 50, with temperatures rising to around 55 overnight. South southwest wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

Monday

Temperature: 55°F

Wind Speed: 8 to 15 mph

Wind Direction: W

Forecast: A chance of rain. Mostly cloudy. High near 55, with temperatures falling to around 45 in the afternoon. West wind 8 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

Monday Night

Temperature: 25°F

Wind Speed: 8 to 14 mph

Wind Direction: WNW

Forecast: Partly cloudy, with a low around 25. West northwest wind 8 to 14 mph, with gusts as high as 24 mph.

Tuesday

Temperature: 38°F

Wind Speed: 3 to 7 mph

Wind Direction: W

Forecast: Mostly sunny, with a high near 38. West wind 3 to 7 mph.

Tuesday Night

Temperature: 30°F

Wind Speed: 3 mph

Wind Direction: S

Forecast: Mostly cloudy, with a low around 30.

Wednesday

Temperature: 41°F

Wind Speed: 5 to 8 mph

Wind Direction: SE

Forecast: A chance of rain after noon. Partly sunny, with a high near 41. Chance of precipitation is 50%.

Wednesday Night

Temperature: 31°F

Wind Speed: 8 mph

Wind Direction: ENE

Forecast: A chance of rain and snow. Mostly cloudy, with a low around 31. Chance of precipitation is 50%.

Thanksgiving Day

Temperature: 39°F

Wind Speed: 8 to 12 mph

Wind Direction: NNE

Forecast: A chance of rain and snow before noon, then a chance of rain and snow. Mostly cloudy, with a high near 39.

Thursday Night

Temperature: 24°F

Wind Speed: 10 mph

Wind Direction: N

Forecast: A chance of rain and snow. Mostly cloudy, with a low around 24.

Friday

Temperature: 35°F

Wind Speed: 10 to 14 mph

Wind Direction: NW

Forecast: A slight chance of rain before noon. Mostly sunny, with a high near 35.

Friday Night

Temperature: 18°F

Wind Speed: 7 to 10 mph

Wind Direction: NW

Forecast: Partly cloudy, with a low around 18.