Weather in Decatur, Illinois, United States

7-Day Detailed Weather Forecast for Decatur

Today

Temperature: 38°F

Wind Speed: 12 mph

Wind Direction: SSW

Forecast: Sunny, with a high near 38. South southwest wind around 12 mph, with gusts as high as 21 mph.

Tonight

Temperature: 29°F

Wind Speed: 7 to 13 mph

Wind Direction: SW

Forecast: Patchy freezing fog after 4am. Mostly cloudy, with a low around 29. Southwest wind 7 to 13 mph, with gusts as high as 21 mph.

Wednesday

Temperature: 40°F

Wind Speed: 2 to 8 mph

Wind Direction: WNW

Forecast: Patchy freezing fog before 10am. Mostly sunny. High near 40, with temperatures falling to around 35 in the afternoon. West northwest wind 2 to 8 mph.

Wednesday Night

Temperature: 34°F

Wind Speed: 9 to 18 mph

Wind Direction: SSE

Forecast: A chance of rain after midnight. Mostly cloudy. Low around 34, with temperatures rising to around 44 overnight. South southeast wind 9 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.

Thursday

Temperature: 49°F

Wind Speed: 16 to 22 mph

Wind Direction: SW

Forecast: Rain before 3pm, then a chance of rain and snow. Mostly cloudy. High near 49, with temperatures falling to around 37 in the afternoon. Southwest wind 16 to 22 mph, with gusts as high as 35 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Temperature: 15°F

Wind Speed: 13 to 23 mph

Wind Direction: WNW

Forecast: Mostly cloudy, with a low around 15. West northwest wind 13 to 23 mph, with gusts as high as 31 mph.

Friday

Temperature: 31°F

Wind Speed: 6 to 12 mph

Wind Direction: WSW

Forecast: Mostly sunny, with a high near 31. West southwest wind 6 to 12 mph, with gusts as high as 17 mph.

Friday Night

Temperature: 25°F

Wind Speed: 10 to 15 mph

Wind Direction: S

Forecast: Mostly cloudy, with a low around 25.

Saturday

Temperature: 48°F

Wind Speed: 9 to 15 mph

Wind Direction: SW

Forecast: Partly sunny, with a high near 48.

Saturday Night

Temperature: 27°F

Wind Speed: 8 mph

Wind Direction: WNW

Forecast: Mostly cloudy, with a low around 27.

Sunday

Temperature: 39°F

Wind Speed: 7 mph

Wind Direction: N

Forecast: Mostly sunny, with a high near 39.

Sunday Night

Temperature: 27°F

Wind Speed: 6 mph

Wind Direction: ENE

Forecast: Mostly cloudy, with a low around 27.

Monday

Temperature: 41°F

Wind Speed: 7 mph

Wind Direction: ESE

Forecast: Partly sunny, with a high near 41.

Monday Night

Temperature: 32°F

Wind Speed: 7 mph

Wind Direction: SSE

Forecast: Mostly cloudy, with a low around 32.