National Weather Service United States Department of Commerce

Severe storms and heavy rain possible from mid-South to Upstate New York on Tuesday

Thunderstorms are expected to develop along and ahead of a cold front from the Tennessee Valley to Upstate New York on Tuesday. The storms will be capable of producing damaging wind gusts and heavy rainfall that could lead to isolated flash flooding.
Read More...

Hazardous Weather Conditions

Current Conditions

En Español

Share |

Decatur IL

7 Day Forecast

For More Weather Information:

Lincoln, IL Local Forecast Office

Overnight

Thunderstorms Chance for Measurable Precipitation 80%

Thunderstorms

Low: 68 °F

Tuesday

Chance Thunderstorms Chance for Measurable Precipitation 50%

Chance
Thunderstorms

High: 85 °F

Tuesday
Night

Mostly Clear

Mostly
Clear

Low: 64 °F

Wednesday

Mostly Sunny

Mostly
Sunny

High: 86 °F

Wednesday
Night

Partly Cloudy

Partly
Cloudy

Low: 71 °F

Thursday

Mostly Sunny

Mostly
Sunny

High: 90 °F

Thursday
Night

Partly Cloudy

Partly
Cloudy

Low: 72 °F

Friday

Chance Thunderstorms

Chance
Thunderstorms

High: 88 °F

Friday
Night

Chance Thunderstorms

Chance
Thunderstorms

Low: 65 °F

Detailed Forecast

  • Overnight Showers and thunderstorms, mainly before 5am. Low around 68. South southwest wind around 8 mph. Chance of precipitation is 80%.
  • Tuesday A 50 percent chance of showers and thunderstorms before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 85. West northwest wind around 7 mph.
  • Tuesday Night Mostly clear, with a low around 64. West northwest wind around 6 mph becoming calm in the evening.
  • Wednesday Mostly sunny, with a high near 86. Light south southeast wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 15 mph.
  • Wednesday Night Partly cloudy, with a low around 71. South southeast wind 7 to 10 mph.
  • Thursday Mostly sunny, with a high near 90.
  • Thursday Night Partly cloudy, with a low around 72.
  • Friday A chance of showers and thunderstorms. Partly sunny, with a high near 88.
  • Friday Night A chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
  • Saturday A chance of showers and thunderstorms. Mostly cloudy, with a high near 77.
  • Saturday Night Mostly cloudy, with a low around 56.
  • Sunday Mostly sunny, with a high near 75.
  • Sunday Night Partly cloudy, with a low around 54.
  • Monday Mostly sunny, with a high near 75.