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Peoria (IL) Weather and Climate: A Comprehensive Guide

The climate in Peoria is marked by big temperature swings throughout the year. Temperatures range from warm during the warmest months to very cold in the cooler months. It also experiences much rain/snowfall throughout the year. Let's now guide you through the climate details for a complete overview.

Average maximum day and minimum night temperature

In Peoria, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a comfortable 30°C in July. In January, the coolest month of the year, temperatures drop to a very cold 1°C.

At night, you can expect cooler temperatures, with averages dropping to around -9°C during this month. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Peoria experiences significant rain/snowfall throughout the year, averaging 1031 mm of precipitation annually. Peoria can be quite wet during June, receiving approximately 134 mm of precipitation over 13 rainy days.

In contrast January, experiences much drier conditions, with 53 mm of snowfall, spread across 9 snowy days. For more details, please visit our Peoria Precipitation page.

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

Sunshine over the year

Peoria can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 10.4 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 3.9 hours of sunlight per day. Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Forecast for Peoria (IL)

Wed   Dec 25
5°C | 1°C
E 5 m/s
1.1 mm
broken clouds and  chance of slight rain

broken clouds and chance of slight rain

Thu   Dec 26
11°C | 4°C
S 5 m/s
0.7 mm
overcast and slight rain

overcast and slight rain

Fri   Dec 27
10°C | 6°C
SE 5 m/s
7.2 mm
overcast and heavy rain

overcast and heavy rain

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

During the months of May 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 summer in Peoria?
    The hottest season / summer takes place in June, July, August and September.
  • Which is the warmest month in Peoria?
    July has an average maximum temperature of 30°C and is the warmest month of the year.
  • Which is the coldest month in Peoria?
    The coldest month is January with an average maximum temperature of 1°C.
  • Which is the wettest month in Peoria?
    June tops the wettest month list with 134 mm of rainfall.
  • Which is the driest month in Peoria?
    January is the driest month with 53 mm of precipitation.
  • Which is the sunniest month in Peoria?
    July is the sunniest month with an average of 311 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.