Weather in Decatur, Illinois, United States

7-Day Detailed Weather Forecast for Decatur

This Afternoon

Temperature: 35°F

Wind Speed: 8 to 13 mph

Wind Direction: NNW

Forecast: Sunny, with a high near 35. North northwest wind 8 to 13 mph, with gusts as high as 22 mph.

Tonight

Temperature: 19°F

Wind Speed: 0 to 6 mph

Wind Direction: NNW

Forecast: Clear, with a low around 19. North northwest wind 0 to 6 mph.

Sunday

Temperature: 41°F

Wind Speed: 3 mph

Wind Direction: WSW

Forecast: Sunny, with a high near 41. West southwest wind around 3 mph.

Sunday Night

Temperature: 29°F

Wind Speed: 2 to 9 mph

Wind Direction: SSE

Forecast: Partly cloudy, with a low around 29. South southeast wind 2 to 9 mph, with gusts as high as 16 mph.

Monday

Temperature: 51°F

Wind Speed: 9 to 14 mph

Wind Direction: SSE

Forecast: A slight chance of rain before noon. Partly sunny, with a high near 51. South southeast wind 9 to 14 mph, with gusts as high as 23 mph.

Monday Night

Temperature: 43°F

Wind Speed: 14 mph

Wind Direction: SSE

Forecast: A chance of rain after midnight. Mostly cloudy, with a low around 43. South southeast wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

Tuesday

Temperature: 57°F

Wind Speed: 14 to 18 mph

Wind Direction: SSE

Forecast: Rain and a slight chance of thunderstorms. Mostly cloudy, with a high near 57. South southeast wind 14 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

Tuesday Night

Temperature: 42°F

Wind Speed: 14 to 18 mph

Wind Direction: S

Forecast: Rain and a slight chance of thunderstorms. Mostly cloudy, with a low around 42. Chance of precipitation is 100%.

Wednesday

Temperature: 48°F

Wind Speed: 14 to 23 mph

Wind Direction: W

Forecast: Rain. Mostly cloudy, with a high near 48. Chance of precipitation is 90%.

Wednesday Night

Temperature: 28°F

Wind Speed: 13 to 22 mph

Wind Direction: WNW

Forecast: Mostly cloudy, with a low around 28.

Thursday

Temperature: 44°F

Wind Speed: 6 to 12 mph

Wind Direction: WNW

Forecast: Sunny, with a high near 44.

Thursday Night

Temperature: 33°F

Wind Speed: 7 mph

Wind Direction: SSW

Forecast: A slight chance of rain after midnight. Mostly cloudy, with a low around 33.

Friday

Temperature: 49°F

Wind Speed: 7 to 10 mph

Wind Direction: SSW

Forecast: A chance of rain. Partly sunny, with a high near 49.

Friday Night

Temperature: 31°F

Wind Speed: 9 mph

Wind Direction: N

Forecast: A chance of rain. Mostly cloudy, with a low around 31.