Illinois weather live forecast

Tomorrow's maximum temperature in Illinois is expected to be 9°C.

  • Wednesday
    12th Mar
    Scattered clouds
  • Thursday
    13th Mar
    Clear skies
  • Friday
    14th Mar
    Broken clouds
  • Saturday
    15th Mar
    Mostly cloudy with light rain (2-5 mm of rainfall expected)
  • Sunday
    16th Mar
    Broken clouds

5-day weather forecast updated at 04:00 on Wednesday 12th March 2025 GMT

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

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Illinois weather forecast by day

Below are the detailed weather forecasts for Illinois for the next 5 days. The forecasts shown are for Chicago and may not represent the whole of Illinois. Browse more destinations in Illinois to view more weather forecasts.

Illinois weather for Wednesday 12th March 2025

Expect scattered clouds in Illinois with a maximum temperature of 9°C, maximum UV of 5 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the east.

  • 9°C maximum temperature9
    °C maximum temperature
  • 4°C minimum temperature4
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 11 hours of bright sunshine11
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 8°C wind chill8
    °C wind chill
  • Light breeze of 8 kph from the East8
    kph wind from E

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Illinois weather for Thursday 13th March 2025

Expect clear skies in Illinois with a maximum temperature of 12°C, maximum UV of 6 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the north-east.

  • 12°C maximum temperature12
    °C maximum temperature
  • 4°C minimum temperature4
    °C minimum temperature
  • Clear skies
    clear skies
  • 11 hours of bright sunshine11
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 12°C wind chill12
    °C wind chill
  • Little or no wind of 5 kph from the North-East5
    kph wind from NE

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Illinois weather for Friday 14th March 2025

Expect broken clouds in Illinois with a maximum temperature of 22°C, maximum UV of 4 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the south-east.

  • 22°C maximum temperature22
    °C maximum temperature
  • 10°C minimum temperature10
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 22°C wind chill22
    °C wind chill
  • Gentle breeze of 18 kph from the South-East18
    kph wind from SE

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Illinois weather for Saturday 15th March 2025

Expect mostly cloudy with light rain in Illinois with a maximum temperature of 17°C, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 29% chance of some rain and a moderate breeze of 26 kph from the south.

  • 17°C maximum temperature17
    °C maximum temperature
  • 8°C minimum temperature8
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 29% chance of some rain29
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Moderate breeze of 26 kph from the South26
    kph wind from S

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Illinois weather for Sunday 16th March 2025

Expect broken clouds in Illinois with a maximum temperature of 7°C, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the west.

  • 7°C maximum temperature7
    °C maximum temperature
  • 1°C minimum temperature1
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 4°C wind chill4
    °C wind chill
  • Gentle breeze of 15 kph from the West15
    kph wind from W

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

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