Illinois weather live forecast

Tomorrow's maximum temperature in Illinois is expected to be 13°C.

  • Wednesday
    30th Apr
    Isolated thunderstorms (0-2 mm of rainfall expected)
  • Thursday
    1st May
    Isolated thunderstorms (30-40 mm of rainfall expected)
  • Friday
    2nd May
    Mostly cloudy with light rain (2-5 mm of rainfall expected)
  • Saturday
    3rd May
    Scattered clouds
  • Sunday
    4th May
    Scattered clouds

5-day weather forecast updated at 04:00 on Wednesday 30th April 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 30th April 2025

Expect isolated thunderstorms in Illinois with a maximum temperature of 13°C, maximum UV of 7 (High) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 93% chance of some rain and little or no wind of 6 kph from the east.

  • 13°C maximum temperature13
    °C maximum temperature
  • 8°C minimum temperature8
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 93% chance of some rain93
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 13°C wind chill13
    °C wind chill
  • Little or no wind of 6 kph from the East6
    kph wind from E

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Illinois weather for Thursday 1st May 2025

Expect isolated thunderstorms in Illinois with a maximum temperature of 16°C, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 30-40 mm of rainfall expected with 99% chance of some rain and little or no wind of 6 kph from the north.

  • 16°C maximum temperature16
    °C maximum temperature
  • 11°C minimum temperature11
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 99% chance of some rain99
    % chance of some rain
  • 30-40 mm of rainfall expected<40
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Little or no wind of 6 kph from the North6
    kph wind from N

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Illinois weather for Friday 2nd May 2025

Expect mostly cloudy with light rain in Illinois with a maximum temperature of 16°C, maximum UV of 6 (High) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 56% chance of some rain and little or no wind of 4 kph from the west.

  • 16°C maximum temperature16
    °C maximum temperature
  • 10°C minimum temperature10
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 56% chance of some rain56
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • 16°C wind chill16
    °C wind chill
  • Little or no wind of 4 kph from the West4
    kph wind from W

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Illinois weather for Saturday 3rd May 2025

Expect scattered clouds in Illinois with a maximum temperature of 12°C, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the north.

  • 12°C maximum temperature12
    °C maximum temperature
  • 7°C minimum temperature7
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 8 hours of bright sunshine8
    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 7 kph from the North7
    kph wind from N

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Illinois weather for Sunday 4th May 2025

Expect scattered clouds in Illinois with a maximum temperature of 18°C, maximum UV of 7 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the north-east.

  • 18°C maximum temperature18
    °C maximum temperature
  • 9°C minimum temperature9
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 10 hours of bright sunshine10
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 18°C wind chill18
    °C wind chill
  • Little or no wind of 5 kph from the North-East5
    kph wind from NE

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

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