Freeport (IL) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Freeport.
Climate overview of Freeport
Freeport, Illinois, United States of America, sees big temperature differences between seasons, with July peaking at 28°C (82°F) and January dropping to -2°C (28°F).
Freeport sees a moderate amount of rain/snowfall, totalling around 960 mm (38 in) per year. It experiences a distinct dry season from January to February, creating some seasonal variation. The most sunshine falls in June, with an average of 10.2 hours of daily sunshine.
Freeport Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Freeport — and find the best time to visit.
Monthly Temperature in Freeport
Visitors to Freeport can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a comfortable 28°C (82°F) in July, the warmest time of the year, to a very cold -2°C (28°F) during cooler months like January.
At night, you can expect temperatures ranging from 17°C (63°F) in July to around -12°C (10°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Freeport
Generally, Freeport experiences moderate precipitation patterns, averaging 960 mm (38 in) yearly. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, June it receives high rainfall, averaging 131 mm (5.2 in) of precipitation, recorded across 13 rainy days. In contrast, the driest month January brings less snowfall, with 31 mm (1.2 in) over 9 snowy days. For more details, please visit our Freeport 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 Freeport
Seasonal changes in sunshine hours are quite dramatic in Freeport. While June receives considerable daily sunshine with up to 10.2 hours, December marks the darkest time of the year, where sunshine is scarce with only 3.6 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit Freeport
The weather does bring rainfall during this period, between 70 mm (2.8 in) and 131 mm (5.2 in). Need help choosing your next travel destination? We offer a specialized tool that matches you with locations based on your weather preferences. Explore destinations that suit your climate preferences.
Frequently asked questions about the climate in Freeport
What is the best time to visit Freeport?
May and September typically offer the most optimal weather in Freeport. In contrast, January, February, March, November and December tend to have less optimal conditions. Freeport has a distinct dry season from January to February.
What temperatures can I expect in Freeport?
Daytime highs range from -2°C (28°F) in January to 28°C (82°F) in July. Nighttime lows range from -12°C (10°F) to 17°C (63°F). Temperatures vary considerably through the year.
How much rain does Freeport get?
Annual rainfall is around 960 mm (38 in). June is the wettest month with 131 mm (5.2 in), while January is the driest with 31 mm (1.2 in).
How sunny is Freeport?
Freeport receives around 2,464 hours of sunshine per year. June is the sunniest month with 307 hours, while December is the cloudiest with just 107 hours. Overall, Freeport enjoys abundant sunshine.
Freeport 3-Day Forecast
Freeport (IL) 3-Day Forecast
Freeport on the map
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