Yosemite National Park is definitely worth a visit
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Peoria (IL) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Peoria.
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Climate overview of Peoria
The climate in Peoria, Illinois, United States of America, is marked by large temperature swings across the seasons, ranging from 30°C (86°F) in July to 1°C (34°F) in January.
With around 1031 mm (41 in) of annual rain/snowfall, Peoria has a notably wet climate. However, this rain/snowfall is not evenly distributed, the city has warm summers and very cold winters. The wettest month is June. The most sunshine falls in July, with an average of 10.4 hours of daily sunshine.
Peoria Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Peoria - and find the best time to visit.
Monthly Temperature in Peoria
In Peoria, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a comfortable 30°C (86°F) in July. In January, the coolest month of the year, temperatures drop to a very cold 1°C (34°F).
At night, temperatures range from around 19°C (66°F) in July to -9°C (16°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Peoria
Peoria experiences significant rain/snowfall throughout the year, averaging 1031 mm (41 in) of precipitation annually. Peoria can be quite wet during June, receiving approximately 134 mm (5.3 in) of precipitation over 13 rainy days.
In contrast, during the driest month (January), you will experience much drier conditions, with 53 mm (2.1 in) of precipitation 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
The average number of days each month with precipitation
Sunshine Hours in Peoria
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
Daily percentage of sunshine
Humidity in Peoria by Month
The relative humidity is high throughout the year in Peoria.
The city experiences its highest humidity in December, reaching 77%. In April, the humidity drops to its lowest level at 65%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Peoria
The most comfortable overall weather for exploring Peoria is usually found in August and September. Conditions are generally least comfortable in January, February and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
cold
Feb
cold
Mar
mixed
Apr
good
May
very good
Jun
very good
Jul
good
Aug
excellent
Sep
excellent
Oct
very good
Nov
mixed
Dec
cold
- Best overall: August and September
- Warmest weather: July and August
- Most sunshine: June and July
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -9°C (16°F).
Frequently asked questions about the climate in Peoria
What is the best time to visit Peoria?
August and September typically offer the most optimal weather in Peoria. In contrast, January, February and December tend to have less optimal conditions. Peoria has warm summers and very cold winters.
What temperatures can I expect in Peoria?
Daytime highs range from 1°C (34°F) in January to 30°C (86°F) in July. Nighttime lows range from -9°C (16°F) to 19°C (66°F). Temperatures vary considerably through the year.
How much rain does Peoria get?
Annual rainfall is around 1031 mm (41 in). June is the wettest month with 134 mm (5.3 in), while January is the driest with 53 mm (2.1 in).
How sunny is Peoria?
Peoria receives around 2,570 hours of sunshine per year. July is the sunniest month with 311 hours, while December is the cloudiest with just 117 hours. Overall, Peoria enjoys abundant sunshine.
Peoria 3-Day Forecast
Peoria on the map
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