Illinois weather live forecast

Today's maximum temperature in Illinois is expected to be -2°C. Select a day from the live weather forecast for Illinois (Chicago), USA for more weather parameters.

  • Sunday
    1st Mar
    Broken clouds
  • Monday
    2nd Mar
    Broken clouds
  • Tuesday
    3rd Mar
    Mostly cloudy with light rain (2-5 mm of rainfall expected)
  • Wednesday
    4th Mar
    Mostly cloudy with rain (10-20 mm of rainfall expected)
  • Thursday
    5th Mar
    Mostly cloudy with rain (5-10 mm of rainfall expected)

5-day weather forecast updated at 04:01 on Sunday 1st March 2026 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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Below are temperatures expected today at popular countries, regions and places in Illinois. Select a destination to see the detailed weather forecast for today, tomorrow and the outlook for the next five days.

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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 Sunday 1st March 2026

Expect broken clouds in Illinois with a maximum temperature of -2°C, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 13 kph from the north-east.

  • -2°C maximum temperature-2
    °C maximum temperature
  • -3°C minimum temperature-3
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 0 cm of snow expected0
    cm of snow expected
  • -6°C wind chill-6
    °C wind chill
  • Gentle breeze of 13 kph from the North-East13
    kph wind from NE

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Illinois weather for Monday 2nd March 2026

Expect broken clouds in Illinois with a maximum temperature of 5°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the south-east.

  • 5°C maximum temperature5
    °C maximum temperature
  • -3°C minimum temperature-3
    °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
  • 3°C wind chill3
    °C wind chill
  • Light breeze of 9 kph from the South-East9
    kph wind from SE

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Illinois weather for Tuesday 3rd March 2026

Expect mostly cloudy with light rain in Illinois with a maximum temperature of 5°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 64% chance of some rain and little or no wind of 6 kph from the north-east.

  • 5°C maximum temperature5
    °C maximum temperature
  • 2°C minimum temperature2
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 64% chance of some rain64
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • 3°C wind chill3
    °C wind chill
  • Little or no wind of 6 kph from the North-East6
    kph wind from NE

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Illinois weather for Wednesday 4th March 2026

Expect mostly cloudy with rain in Illinois with a maximum temperature of 8°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 55% chance of some rain and a light breeze of 8 kph from the north-east.

  • 8°C maximum temperature8
    °C maximum temperature
  • 1°C minimum temperature1
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 55% chance of some rain55
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • 6°C wind chill6
    °C wind chill
  • Light breeze of 8 kph from the North-East8
    kph wind from NE

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Illinois weather for Thursday 5th March 2026

Expect mostly cloudy with rain in Illinois with a maximum temperature of 11°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 50% chance of some rain and little or no wind of 5 kph from the north.

  • 11°C maximum temperature11
    °C maximum temperature
  • 6°C minimum temperature6
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 50% chance of some rain50
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Little or no wind of 5 kph from the North5
    kph wind from N

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

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