Illinois weather live forecast

Tomorrow's maximum temperature in Illinois is expected to be 12°C.

  • Monday
    5th May
    Mostly cloudy with light rain (0-2 mm of rainfall expected)
  • Tuesday
    6th May
    Scattered clouds
  • Wednesday
    7th May
    Scattered clouds
  • Thursday
    8th May
    Scattered clouds
  • Friday
    9th May
    Clear skies

5-day weather forecast updated at 04:00 on Monday 5th May 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 Monday 5th May 2025

Expect mostly cloudy with light rain in Illinois with a maximum temperature of 12°C, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 13% chance of some rain and a light breeze of 10 kph from the north-east.

  • 12°C maximum temperature12
    °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 5 (Moderate)5
    UV index (Moderate)
  • 13% chance of some rain13
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 10 kph from the North-East10
    kph wind from NE

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Illinois weather for Tuesday 6th May 2025

Expect scattered clouds in Illinois with a maximum temperature of 17°C, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 4 kph from the north-west.

  • 17°C maximum temperature17
    °C maximum temperature
  • 8°C minimum temperature8
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 17°C wind chill17
    °C wind chill
  • Little or no wind of 4 kph from the North-West4
    kph wind from NW

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Illinois weather for Wednesday 7th May 2025

Expect scattered clouds in Illinois with a maximum temperature of 15°C, maximum UV of 7 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north.

  • 15°C maximum temperature15
    °C maximum temperature
  • 9°C minimum temperature9
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 12 hours of bright sunshine12
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 11 kph from the North11
    kph wind from N

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Illinois weather for Thursday 8th May 2025

Expect scattered clouds in Illinois with a maximum temperature of 11°C, maximum UV of 6 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north-east.

  • 11°C maximum temperature11
    °C maximum temperature
  • 8°C minimum temperature8
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 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
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 11 kph from the North-East11
    kph wind from NE

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Illinois weather for Friday 9th May 2025

Expect clear skies in Illinois with a maximum temperature of 14°C, maximum UV of 7 (High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 4 kph from the north-east.

  • 14°C maximum temperature14
    °C maximum temperature
  • 6°C minimum temperature6
    °C minimum temperature
  • Clear skies
    clear skies
  • 14 hours of bright sunshine14
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 14°C wind chill14
    °C wind chill
  • Little or no wind of 4 kph from the North-East4
    kph wind from NE

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

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