Weather in Decatur, Illinois, United States

7-Day Detailed Weather Forecast for Decatur

This Afternoon

Temperature: 27°F

Wind Speed: 9 to 16 mph

Wind Direction: SSW

Forecast: Patchy blowing snow before 3pm. Sunny, with a high near 27. South southwest wind 9 to 16 mph, with gusts as high as 26 mph.

Tonight

Temperature: 19°F

Wind Speed: 8 mph

Wind Direction: SSW

Forecast: Mostly clear, with a low around 19. South southwest wind around 8 mph.

Tuesday

Temperature: 37°F

Wind Speed: 7 to 10 mph

Wind Direction: SSW

Forecast: Sunny, with a high near 37. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.

Tuesday Night

Temperature: 28°F

Wind Speed: 6 to 10 mph

Wind Direction: SW

Forecast: Mostly cloudy, with a low around 28. Southwest wind 6 to 10 mph, with gusts as high as 17 mph.

Wednesday

Temperature: 39°F

Wind Speed: 3 to 9 mph

Wind Direction: SW

Forecast: Mostly sunny, with a high near 39. Southwest wind 3 to 9 mph.

Wednesday Night

Temperature: 35°F

Wind Speed: 10 to 18 mph

Wind Direction: SSE

Forecast: A chance of rain after midnight. Mostly cloudy, with a low around 35. South southeast wind 10 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

Thursday

Temperature: 49°F

Wind Speed: 21 mph

Wind Direction: WSW

Forecast: Rain before noon, then a chance of rain and snow. Mostly cloudy, with a high near 49. West southwest wind around 21 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Temperature: 14°F

Wind Speed: 8 to 18 mph

Wind Direction: WNW

Forecast: Partly cloudy, with a low around 14.

Friday

Temperature: 31°F

Wind Speed: 7 to 12 mph

Wind Direction: SW

Forecast: Mostly sunny, with a high near 31.

Friday Night

Temperature: 26°F

Wind Speed: 14 mph

Wind Direction: S

Forecast: Mostly cloudy, with a low around 26.

Saturday

Temperature: 47°F

Wind Speed: 10 to 14 mph

Wind Direction: SSW

Forecast: A slight chance of rain after noon. Partly sunny, with a high near 47.

Saturday Night

Temperature: 30°F

Wind Speed: 9 mph

Wind Direction: WNW

Forecast: A slight chance of rain before midnight. Mostly cloudy, with a low around 30.

Sunday

Temperature: 42°F

Wind Speed: 8 mph

Wind Direction: NNE

Forecast: Partly sunny, with a high near 42.

Sunday Night

Temperature: 29°F

Wind Speed: 7 mph

Wind Direction: ESE

Forecast: A slight chance of rain. Mostly cloudy, with a low around 29.