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Mundelein (IL) Weather and Climate: A Comprehensive Guide

The temperature in Mundelein can vary greatly throughout the year. The temperatures shift from warm to very cold. It also has a relatively rain/snowy climate with high levels of precipitation. Let's now guide you through the climate details for a complete overview.

Average maximum day and minimum night temperature

Depending on the time of the year, temperatures range from comfortable to very cold in Mundelein. On average, daytime temperatures range from a comfortable 28°C in July to a very cold -1°C in February.

Nighttime temperatures can drop, with average lows reaching -10°C in February. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Mundelein has a relatively rain/snowy climate with high precipitation levels, averaging 1009 mm of rain/snowfall annually. The seasons in Mundelein, bring significant changes in precipitation. The wettest month, June, receives high rainfall, with an average of 114 mm of precipitation. This rainfall is distributed across 13 rainy days.

In contrast, the driest month, January, experiences much less snowfall, totaling 41 mm over 10 snowy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Mundelein Precipitation page.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

In Mundelein, summer days are longer and more sunny, with daily sunshine hours peaking at 10.6 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 3.6 hours per average day. Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Chicago, the United States of America (32 KM, 20 Miles).

Daily hours of sunshine

Data from: Chicago, the United States of America (32 KM, 20 Miles).

Forecast for Mundelein (IL)

Wed   Dec 25
4°C | -2°C
E 4 m/s
broken clouds and no rain

broken clouds and no rain

Thu   Dec 26
9°C | 2°C
S 3 m/s
0.3 mm
overcast and small chance of slight rain

overcast and small chance of slight rain

Fri   Dec 27
10°C | 5°C
SE 4 m/s
4.8 mm
overcast and rain

overcast and rain

The best time of year to visit Mundelein in the United States of America

During the months of May, June and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • When is winter in Mundelein?
    The coldest season / winter is in the following months: January, February and December.
  • Which is the warmest month in Mundelein?
    July has an average maximum temperature of 28°C and is the warmest month of the year.
  • Which is the coldest month in Mundelein?
    The coldest month is February with an average maximum temperature of -1°C.
  • Which is the wettest month in Mundelein?
    June tops the wettest month list with 114 mm of rainfall.
  • Which is the driest month in Mundelein?
    January is the driest month with 41 mm of precipitation.
  • Which is the sunniest month in Mundelein?
    July is the sunniest month with an average of 319 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.