Pekin (IL) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Pekin.
Climate overview of Pekin
Pekin, Illinois, United States of America, sees big temperature differences between seasons, with July peaking at 30°C (86°F) and January dropping to 1°C (34°F).
Rain/snowfall is high, totalling around 1012 mm (40 in) per year. June is the wettest month and January the driest. The city also experiences warm summers and very cold winters. July is the sunniest month, averaging 10.4 hours of sunshine per day.
Pekin Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Pekin - and find the best time to visit.
Monthly Temperature in Pekin
Visitors to Pekin can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a comfortable 30°C (86°F) in July, the warmest time of the year, to a very cold 1°C (34°F) during cooler months like January.
At night, you can expect temperatures ranging from 19°C (66°F) in July to around -9°C (16°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Pekin
Pekin is known for its substantial rain/snowfall, with annual precipitation reaching 1012 mm (40 in). Significant seasonal changes in precipitation occur throughout the year. In the wettest month, June it receives high rainfall, averaging 137 mm (5.4 in) of precipitation, recorded across 13 rainy days. In contrast, the driest month January brings less snowfall, with 53 mm (2.1 in) over 9 snowy days. For more details, please visit our Pekin 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 Pekin
Seasonal changes in sunshine hours are quite dramatic in Pekin. While July receives considerable daily sunshine with up to 10.4 hours, December marks the darkest time of the year, where sunshine is scarce 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 Pekin by Month
The relative humidity is high throughout the year in Pekin.
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 Pekin
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, August and September
- Warmest weather: June, July and August
- Most sunshine: June and July
- Fewer rainy days: January, February, August, September and November
- 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 Pekin
What is the best time to visit Pekin?
May, August and September typically offer the most optimal weather in Pekin. In contrast, January, February and December tend to have less optimal conditions. Pekin has warm summers and very cold winters.
What temperatures can I expect in Pekin?
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 Pekin get?
Annual rainfall is around 1012 mm (40 in). June is the wettest month with 137 mm (5.4 in), while January is the driest with 53 mm (2.1 in).
How sunny is Pekin?
Pekin 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, Pekin enjoys abundant sunshine.
Pekin 3-Day Forecast
Pekin on the map
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