Illinois Weather Forecast

Check the Illinois weather forecast for the next 5 days before you head off on holiday. The 5-day forecast shows the prevailing weather conditions, maximum & minimum temperatures, hours of sunshine per day, wind speed & direction and more. Tomorrow's maximum temperature in Illinois is expected to be 27°C. The weather forecast shown below is for Chicago.

Illinois: 5-day weather forecast

Click on a symbol below to see the daily forecast in detail.

Last updated at 16:07 on Thursday 17th August 2017 GMT

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All months

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

  • Book low fares on flights to Chicago with Virgin Atlantic
  • Flights depart from London Heathrow Airport
  • Join Flying Club & earn miles with every booking

More about Illinois

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All months

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 Thursday 17th August 2017

Below is the Illinois weather forecast for Thursday 17th August 2017. Expect broken clouds in Illinois with a maximum temperature of 28°C and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 29% chance of some rain and a moderate breeze of 27 kph from the south-west.

  • 28
    °C maximum temperature
  • broken clouds
  • 5
    hours of sunshine
  • 29
    % chance of some rain
  • <2
    mm of rainfall expected
  • 27
    kph wind from SW

Back to top

Illinois weather for Friday 18th August 2017

Below is the Illinois weather forecast for Friday 18th August 2017. Expect clear skies in Illinois with a maximum temperature of 27°C, low levels of heat & humidity and 13 hours of bright sunshine. There are 0-2 mm of rainfall expected with 31% chance of some rain and a moderate breeze of 23 kph from the west.

  • 27
    °C maximum temperature
  • 19
    °C minimum temperature
  • clear skies
  • 13
    hours of sunshine
  • 31
    % chance of some rain
  • <2
    mm of rainfall expected
  • L
    low heat & humidity
  • 23
    kph wind from W

Back to top

Illinois weather for Saturday 19th August 2017

Below is the Illinois weather forecast for Saturday 19th August 2017. Expect isolated thunderstorms in Illinois with a maximum temperature of 25°C and 11 hours of bright sunshine. There are 2-5 mm of rainfall expected with 59% chance of some rain and a gentle breeze of 15 kph from the east.

  • 25
    °C maximum temperature
  • 18
    °C minimum temperature
  • isolated thunderstorms
  • 11
    hours of sunshine
  • 59
    % chance of some rain
  • <5
    mm of rainfall expected
  • 0
    no heat & humidity
  • 15
    kph wind from E

Back to top

Illinois weather for Sunday 20th August 2017

Below is the Illinois weather forecast for Sunday 20th August 2017. Expect scattered clouds in Illinois with a maximum temperature of 29°C, moderate levels of heat & humidity and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south.

  • 29
    °C maximum temperature
  • 18
    °C minimum temperature
  • scattered clouds
  • 10
    hours of sunshine
  • 0
    mm of rainfall expected
  • M
    moderate heat & humidity
  • 13
    kph wind from S

Back to top

Illinois weather for Monday 21st August 2017

Below is the Illinois weather forecast for Monday 21st August 2017. Expect broken clouds in Illinois with a maximum temperature of 30°C, moderate levels of heat & humidity and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the south-west.

  • 30
    °C maximum temperature
  • 20
    °C minimum temperature
  • broken clouds
  • 1
    hour of sunshine
  • 0
    mm of rainfall expected
  • M
    moderate heat & humidity
  • 18
    kph wind from SW

Back to top

  • Book low fares on flights to Chicago with Virgin Atlantic
  • Flights depart from London Heathrow Airport
  • Join Flying Club & earn miles with every booking

Back to top

Illinois weather by month

Check Illinois weather for a particular month by selecting from the list below. Monthly weather guides include figures for temperature, rainfall, sunshine hours and sea temperature plus daily sunrise & sunset times.

Back to top

More Illinois destinations

All destinations (A to Z)

Can't see your chosen destination? Use our A to Z search to find your required the holiday weather guide:

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  

More destinations

Related posts

Popular travel offers

Top ^