Best time to go to Illinois

  • Max Day Temperature: 22 - 30°C [remove]
  • Hours of Sunshine: 10 hours or more [remove]

The best time to go to Illinois (Chicago) is June and July

Change criteria

Max Day Temperature (°C)

  • -1°C maximum daytime temperature in January in Illinois (Chicago)-1
    Jan
  • 1°C maximum daytime temperature in February in Illinois (Chicago)1
    Feb
  • 8°C maximum daytime temperature in March in Illinois (Chicago)8
    Mar
  • 15°C maximum daytime temperature in April in Illinois (Chicago)15
    Apr
  • 21°C maximum daytime temperature in May in Illinois (Chicago)21
    May
  • 27°C maximum daytime temperature in June in Illinois (Chicago)27
    Jun
  • 29°C maximum daytime temperature in July in Illinois (Chicago)29
    Jul
  • 28°C maximum daytime temperature in August in Illinois (Chicago)28
    Aug
  • 24°C maximum daytime temperature in September in Illinois (Chicago)24
    Sep
  • 17°C maximum daytime temperature in October in Illinois (Chicago)17
    Oct
  • 9°C maximum daytime temperature in November in Illinois (Chicago)9
    Nov
  • 2°C maximum daytime temperature in December in Illinois (Chicago)2
    Dec

Hours of Sunshine (daily)

  • 4 hours of sunshine per day (45% of daylight hours) in January in Illinois4
    Jan
  • 5 hours of sunshine per day (46% of daylight hours) in February in Illinois5
    Feb
  • 6 hours of sunshine per day (50% of daylight hours) in March in Illinois6
    Mar
  • 7 hours of sunshine per day (55% of daylight hours) in April in Illinois7
    Apr
  • 9 hours of sunshine per day (62% of daylight hours) in May in Illinois9
    May
  • 10 hours of sunshine per day (68% of daylight hours) in June in Illinois10
    Jun
  • 10 hours of sunshine per day (69% of daylight hours) in July in Illinois10
    Jul
  • 9 hours of sunshine per day (67% of daylight hours) in August in Illinois9
    Aug
  • 8 hours of sunshine per day (61% of daylight hours) in September in Illinois8
    Sep
  • 6 hours of sunshine per day (56% of daylight hours) in October in Illinois6
    Oct
  • 4 hours of sunshine per day (39% of daylight hours) in November in Illinois4
    Nov
  • 3 hours of sunshine per day (37% of daylight hours) in December in Illinois3
    Dec
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More about Illinois

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

The best time to go guide for Illinois, represented by Chicago, shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia) & the Met Office. Find out more about our data sources.

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

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Best time to go to Illinois, USA

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