Weather in Decatur, Illinois, United States
7-Day Forecast Summary
7-Day Detailed Weather Forecast for Decatur
Tonight |
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Temperature: 15°F Wind Speed: 17 to 23 mph Wind Direction: WNW Forecast: A slight chance of rain showers before 8pm, then a chance of snow showers between 9pm and 1am. Mostly cloudy, with a low around 15. Wind chill values as low as -3. West northwest wind 17 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 60%. New snow accumulation of less than half an inch possible. |
Friday |
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Temperature: 30°F Wind Speed: 8 to 21 mph Wind Direction: WSW Forecast: Mostly sunny, with a high near 30. Wind chill values as low as 0. West southwest wind 8 to 21 mph, with gusts as high as 33 mph. |
Friday Night |
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Temperature: 25°F Wind Speed: 6 to 17 mph Wind Direction: S Forecast: Partly cloudy. Low around 25, with temperatures rising to around 33 overnight. South wind 6 to 17 mph, with gusts as high as 25 mph. |
Saturday |
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Temperature: 47°F Wind Speed: 10 to 17 mph Wind Direction: SW Forecast: Partly sunny. High near 47, with temperatures falling to around 42 in the afternoon. Southwest wind 10 to 17 mph, with gusts as high as 25 mph. |
Saturday Night |
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Temperature: 22°F Wind Speed: 7 to 10 mph Wind Direction: WNW Forecast: Mostly clear, with a low around 22. West northwest wind 7 to 10 mph, with gusts as high as 16 mph. |
Sunday |
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Temperature: 35°F Wind Speed: 2 to 6 mph Wind Direction: NNW Forecast: Sunny, with a high near 35. North northwest wind 2 to 6 mph. |
Sunday Night |
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Temperature: 24°F Wind Speed: 2 to 8 mph Wind Direction: SE Forecast: Partly cloudy, with a low around 24. Southeast wind 2 to 8 mph. |
Monday |
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Temperature: 42°F Wind Speed: 10 mph Wind Direction: SSE Forecast: Partly sunny, with a high near 42. |
Monday Night |
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Temperature: 36°F Wind Speed: 10 mph Wind Direction: S Forecast: Mostly cloudy, with a low around 36. |
Tuesday |
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Temperature: 54°F Wind Speed: 9 mph Wind Direction: SW Forecast: Partly sunny, with a high near 54. |
Tuesday Night |
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Temperature: 41°F Wind Speed: 6 mph Wind Direction: SSE Forecast: Mostly cloudy, with a low around 41. |
Wednesday |
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Temperature: 60°F Wind Speed: 6 to 10 mph Wind Direction: SE Forecast: Mostly cloudy, with a high near 60. |
Wednesday Night |
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Temperature: 51°F Wind Speed: 10 mph Wind Direction: S Forecast: A slight chance of rain before midnight. Mostly cloudy, with a low around 51. |
Christmas Day |
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Temperature: 63°F Wind Speed: 12 mph Wind Direction: SSW Forecast: Partly sunny, with a high near 63. |