Decatur weather live forecast

Tomorrow's maximum temperature in Decatur is expected to be 6°C.

  • Thursday
    30th Jan
    Mostly cloudy with light rain (2-5 mm of rainfall expected)
  • Friday
    31st Jan
    Mostly cloudy with rain (5-10 mm of rainfall expected)
  • Saturday
    1st Feb
    Scattered clouds
  • Sunday
    2nd Feb
    Broken clouds
  • Monday
    3rd Feb
    Broken clouds

5-day weather forecast updated at 04:01 on Thursday 30th January 2025 GMT

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The 5-day weather forecast for Illinois (Decatur) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Decatur weather forecast by day

Below are the detailed weather forecasts for Decatur for the next 5 days.

Decatur weather for Thursday 30th January 2025

Expect mostly cloudy with light rain in Decatur, Illinois with a maximum temperature of 6°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 71% chance of some rain and a light breeze of 9 kph from the south.

  • 6°C maximum temperature6
    °C maximum temperature
  • -1°C minimum temperature-1
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 71% chance of some rain71
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • 4°C wind chill4
    °C wind chill
  • Light breeze of 9 kph from the South9
    kph wind from S

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Decatur weather for Friday 31st January 2025

Expect mostly cloudy with rain in Decatur, Illinois with a maximum temperature of 7°C and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 49% chance of some rain and a light breeze of 11 kph from the north-west.

  • 7°C maximum temperature7
    °C maximum temperature
  • 0°C minimum temperature0
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • No hours of bright sunshine0
    hours of sunshine
  • No UV (maximum) index0
    UV index (None)
  • 49% chance of some rain49
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • 5°C wind chill5
    °C wind chill
  • Light breeze of 11 kph from the North-West11
    kph wind from NW

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Decatur weather for Saturday 1st February 2025

Expect scattered clouds in Decatur, Illinois with a maximum temperature of 7°C, maximum UV of 3 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south-east.

  • 7°C maximum temperature7
    °C maximum temperature
  • -3°C minimum temperature-3
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 4°C wind chill4
    °C wind chill
  • Gentle breeze of 14 kph from the South-East14
    kph wind from SE

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Decatur weather for Sunday 2nd February 2025

Expect broken clouds in Decatur, Illinois with a maximum temperature of 13°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south-west.

  • 13°C maximum temperature13
    °C maximum temperature
  • 2°C minimum temperature2
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 14 kph from the South-West14
    kph wind from SW

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Decatur weather for Monday 3rd February 2025

Expect broken clouds in Decatur, Illinois with a maximum temperature of 7°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the north.

  • 7°C maximum temperature7
    °C maximum temperature
  • 0°C minimum temperature0
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 5°C wind chill5
    °C wind chill
  • Light breeze of 7 kph from the North7
    kph wind from N

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Metric (°C / mm)  |  Imperial (°F / inches)

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