Weather in Decatur, Illinois, United States

7-Day Detailed Weather Forecast for Decatur

Today

Temperature: 55°F

Wind Speed: 17 mph

Wind Direction: NW

Forecast: A slight chance of rain showers before 9am. Partly sunny, with a high near 55. Northwest wind around 17 mph, with gusts as high as 29 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

Tonight

Temperature: 37°F

Wind Speed: 6 to 15 mph

Wind Direction: W

Forecast: Patchy frost after 5am. Mostly clear, with a low around 37. West wind 6 to 15 mph, with gusts as high as 25 mph.

Sunday

Temperature: 60°F

Wind Speed: 6 to 17 mph

Wind Direction: W

Forecast: Patchy frost before 8am. Sunny, with a high near 60. West wind 6 to 17 mph, with gusts as high as 29 mph.

Sunday Night

Temperature: 34°F

Wind Speed: 3 to 13 mph

Wind Direction: N

Forecast: Patchy frost after 4am. Mostly clear, with a low around 34. North wind 3 to 13 mph, with gusts as high as 22 mph.

Monday

Temperature: 60°F

Wind Speed: 3 to 7 mph

Wind Direction: ESE

Forecast: Patchy frost before 8am. Sunny, with a high near 60. East southeast wind 3 to 7 mph.

Monday Night

Temperature: 47°F

Wind Speed: 8 to 13 mph

Wind Direction: SSE

Forecast: Mostly clear, with a low around 47. South southeast wind 8 to 13 mph, with gusts as high as 21 mph.

Tuesday

Temperature: 76°F

Wind Speed: 12 to 17 mph

Wind Direction: SW

Forecast: Mostly sunny, with a high near 76. Southwest wind 12 to 17 mph, with gusts as high as 28 mph.

Tuesday Night

Temperature: 57°F

Wind Speed: 9 to 13 mph

Wind Direction: SW

Forecast: A slight chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 57.

Wednesday

Temperature: 79°F

Wind Speed: 9 mph

Wind Direction: WSW

Forecast: Mostly sunny, with a high near 79.

Wednesday Night

Temperature: 59°F

Wind Speed: 9 mph

Wind Direction: SSW

Forecast: Mostly clear, with a low around 59.

Thursday

Temperature: 82°F

Wind Speed: 9 to 17 mph

Wind Direction: S

Forecast: Sunny, with a high near 82.

Thursday Night

Temperature: 62°F

Wind Speed: 16 mph

Wind Direction: S

Forecast: A slight chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 62.

Friday

Temperature: 75°F

Wind Speed: 14 to 17 mph

Wind Direction: SSW

Forecast: Showers and thunderstorms likely. Partly sunny, with a high near 75.

Friday Night

Temperature: 48°F

Wind Speed: 12 to 15 mph

Wind Direction: W

Forecast: Showers and thunderstorms likely. Mostly cloudy, with a low around 48.