Illinois weather in January 2022

  • -1°C maximum daytime temperature in January in Illinois (Chicago)-1
    -1°C max day temperature
  • 4 hours of sunshine per day
  • 12 days with some rainfall in January in Illinois (Chicago)12
    12 days with some rainfall
  • -10°C minimum night-time temperature in January in Illinois (Chicago)-10
    -10°C min night temperature
  • 10 hours of daylight per day in January in Illinois (Chicago)10
    10 hours of daylight per day
  • No heat & humidity in January in Illinois (Chicago)0
    No heat & humidity
  • 44 mm monthly rainfall in January in Illinois (Chicago)44
    44 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in January in Illinois (Chicago)1
    1 (Low) UV index
  • 4°C sea temperature in January in Illinois (Chicago)4
    4°C sea temperature

Below are average maximum temperatures at popular destinations in Illinois in January. Select a destination to see more weather parameters.

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Recommended for Illinois

The January weather guide for Illinois (Chicago) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

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

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More about the USA

How cold is it in Illinois in January?

Daytime temperatures usually reach -1°C in Chicago, Illinois in January, falling to -10°C at night.

How sunny is it in Illinois in January?

There are normally 4 hours of bright sunshine each day in Chicago, Illinois in January - that's 45% of daylight hours.

Is the sea cold around Illinois in January?

The average sea temperature around Chicago, Illinois in January is 4°C.

Does it rain in Illinois in January?

There are usually 12 days with some rain in Chicago, Illinois in January and the average monthly rainfall is 44mm. Rain may fall as snow in this month.

Illinois January sunrise & sunset times

Browse the sunrise and sunset times for Illinois in January 2022. Select a month to view Illinois sunrise and sunset times for the next 12 months. The Illinois sunrise and sunset times shown below are for Chicago.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Saturday, 1st January 2022 07:18 16:30
Sunday, 16th January 2022 07:15 16:46
Monday, 31st January 2022 07:04 17:05

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