Belvidere (IL) Weather & Climate: Best Time to Visit

Average temperatures, rainfall, sunshine and the best time to visit Belvidere.

Climate overview of Belvidere

Belvidere, 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).

The city has a wet climate, receiving around 1040 mm (41 in) of rain/snowfall per year. June is the wettest month.

Belvidere Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Belvidere — and find the best time to visit.

Monthly Temperature in Belvidere

Visitors to Belvidere can expect significant temperature changes throughout the year. On average, daytime temperatures range from a comfortable 28°C (82°F) in July to a very cold -2°C (28°F) in January.

Nighttime temperatures range from 17°C (63°F) in July to -11°C (12°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Rainfall in Belvidere

Belvidere is known for its substantial rain/snowfall, with annual precipitation reaching 1040 mm (41 in). The seasons in Belvidere bring significant changes in precipitation. The wettest month, June, receives high rainfall, with an average of 147 mm (5.8 in) of precipitation. This rainfall is distributed across 14 rainy days.

In contrast, the driest month, January, experiences much less snowfall, totaling 40 mm (1.6 in) over 10 snowy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Belvidere Precipitation page.

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

Best Time to Visit Belvidere

During May, June, July, August and September, Belvidere experiences its most favorable weather, with temperatures between 22°C (71°F) and 28°C (83°F). These mild conditions make it an excellent time for a visit.

The weather does bring rainfall during this period, between 77 mm (3 in) and 147 mm (5.8 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 Belvidere

What is the best time to visit Belvidere?

May and September typically offer the most optimal weather in Belvidere. In contrast, January, February, March, November and December tend to have less optimal conditions.

What temperatures can I expect in Belvidere?

Daytime highs range from -2°C (28°F) in January to 28°C (82°F) in July. Nighttime lows range from -11°C (12°F) to 17°C (63°F). Temperatures vary considerably through the year.

How much rain does Belvidere get?

Annual rainfall is around 1040 mm (41 in). June is the wettest month with 147 mm (5.8 in), while January is the driest with 40 mm (1.6 in).

Belvidere 3-Day Forecast

Belvidere (IL) 3-Day Forecast

Belvidere on the map

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