National Weather Service forecast

Decatur, Illinois Weather

57°Overnight: Light Rain Likely
Wind SSW 13 to 16 mph
7-DayHourlyRadar

Decatur 7-Day Forecast

  1. Overnight
    57°F
    Light Rain Likely
    55% chance of precipitation

    Rain likely. Mostly cloudy, with a low around 57. South southwest wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

  2. Wednesday
    61°F
    Patchy Drizzle
    11% chance of precipitation

    Patchy drizzle. Mostly cloudy, with a high near 61. Southwest wind around 14 mph, with gusts as high as 22 mph.

  3. Wednesday Night
    46°F
    Patchy Drizzle then Mostly Cloudy
    10% chance of precipitation

    Patchy drizzle before 10pm. Mostly cloudy, with a low around 46. West southwest wind around 12 mph, with gusts as high as 20 mph.

  4. Thursday
    61°F
    Mostly Cloudy
    12% chance of precipitation

    Mostly cloudy, with a high near 61. West wind 10 to 14 mph, with gusts as high as 22 mph.

  5. Thursday Night
    43°F
    Mostly Cloudy
    4% chance of precipitation

    Mostly cloudy, with a low around 43. Northwest wind 5 to 9 mph.

  6. Friday
    53°F
    Partly Sunny
    7% chance of precipitation

    Partly sunny, with a high near 53. North northwest wind around 13 mph, with gusts as high as 17 mph.

  7. Friday Night
    33°F
    Partly Cloudy

    Partly cloudy, with a low around 33. North northwest wind 2 to 9 mph.

  8. Saturday
    53°F
    Mostly Sunny

    Mostly sunny, with a high near 53.

  9. Saturday Night
    32°F
    Partly Cloudy
    1% chance of precipitation

    Partly cloudy, with a low around 32.

  10. Sunday
    58°F
    Sunny
    1% chance of precipitation

    Sunny, with a high near 58.

  11. Sunday Night
    34°F
    Clear
    1% chance of precipitation

    Clear, with a low around 34.

  12. Monday
    63°F
    Sunny

    Sunny, with a high near 63.

  13. Monday Night
    39°F
    Clear

    Clear, with a low around 39.

  14. Tuesday
    66°F
    Sunny
    1% chance of precipitation

    Sunny, with a high near 66.

Issued by the National Weather Service (ILX office), updated .

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About Decatur

Population (2020 Census)
70,522
Coordinates
39.856, -88.934
Elevation
682 ft
NWS forecast office
ILX
Time zone
America/Chicago
Sunrise today
6:27 AM CST
Sunset today
4:50 PM CST
Daylight today
10 h 23 min

Decatur Weather Questions

What is the weather forecast for Decatur, Illinois?

Overnight: Rain likely. Mostly cloudy, with a low around 57. South southwest wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible. Wednesday: Patchy drizzle. Mostly cloudy, with a high near 61. Southwest wind around 14 mph, with gusts as high as 22 mph.

Will it rain or snow in Decatur this week?

The best chance of precipitation is Overnight at 55%. Periods with a 30% chance or more: Overnight (55%).

How warm and how cold will it get in Decatur this week?

The warmest day is Tuesday, with a high near 66°F. The coldest night is Saturday Night, with a low near 32°F.

What time are sunrise and sunset in Decatur today?

Sunrise is at 6:27 AM CST and sunset is at 4:50 PM CST, for 10 h 23 min of daylight.

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