Weather in Decatur, Illinois, United States
7-Day Forecast Summary
7-Day Detailed Weather Forecast for Decatur
Overnight |
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Temperature: 36°F Wind Speed: 15 to 22 mph Wind Direction: S Forecast: A chance of drizzle. Cloudy. Low around 36, with temperatures rising to around 48 overnight. South wind 15 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible. |
Thursday |
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Temperature: 51°F Wind Speed: 12 to 24 mph Wind Direction: SW Forecast: Rain likely before 8am, then rain showers likely between 8am and 9am, then showers and thunderstorms. Mostly cloudy. High near 51, with temperatures falling to around 39 in the afternoon. Southwest wind 12 to 24 mph, with gusts as high as 43 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible. |
Thursday Night |
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Temperature: 18°F Wind Speed: 18 to 24 mph Wind Direction: W Forecast: A slight chance of rain before 8pm, then a chance of snow between 8pm and midnight. Mostly cloudy, with a low around 18. Wind chill values as low as 2. West wind 18 to 24 mph, with gusts as high as 37 mph. Chance of precipitation is 30%. New snow accumulation of less than half an inch possible. |
Friday |
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Temperature: 31°F Wind Speed: 9 to 18 mph Wind Direction: WSW Forecast: Sunny, with a high near 31. Wind chill values as low as 2. West southwest wind 9 to 18 mph, with gusts as high as 26 mph. |
Friday Night |
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Temperature: 26°F Wind Speed: 9 to 17 mph Wind Direction: S Forecast: Partly cloudy. Low around 26, with temperatures rising to around 33 overnight. South wind 9 to 17 mph, with gusts as high as 25 mph. |
Saturday |
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Temperature: 48°F Wind Speed: 12 to 17 mph Wind Direction: SW Forecast: Partly sunny, with a high near 48. Southwest wind 12 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: NW Forecast: Partly cloudy, with a low around 22. Northwest wind 7 to 10 mph, with gusts as high as 17 mph. |
Sunday |
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Temperature: 37°F Wind Speed: 6 mph Wind Direction: NW Forecast: Sunny, with a high near 37. |
Sunday Night |
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Temperature: 25°F Wind Speed: 7 mph Wind Direction: ENE Forecast: Mostly cloudy, with a low around 25. |
Monday |
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Temperature: 42°F Wind Speed: 9 mph Wind Direction: SE Forecast: Partly sunny, with a high near 42. |
Monday Night |
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Temperature: 36°F Wind Speed: 9 mph Wind Direction: S Forecast: Mostly cloudy, with a low around 36. |
Tuesday |
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Temperature: 51°F Wind Speed: 9 mph Wind Direction: SW Forecast: Partly sunny, with a high near 51. |
Tuesday Night |
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Temperature: 34°F Wind Speed: 7 mph Wind Direction: N Forecast: Mostly cloudy, with a low around 34. |
Wednesday |
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Temperature: 51°F Wind Speed: 8 mph Wind Direction: SE Forecast: Partly sunny, with a high near 51. |