Climate Insights for Belleville

The climate in Belleville is cool. The average annual temperature is 10°C and approximately 980mm of precipitation falls per year. Belleville receives a notable amount of rainfall throughout the year, including during its driest month. Belleville is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: Luglio, Giugno, Agosto. The coldest months are Gennaio, Febbraio, Dicembre, when temperatures can drop to -8°C. Snowfall occurs from January to December, with around 82cm accumulating over the season.

Belleville has a wide annual temperature range, spanning 36°C from the coldest to warmest months. The warmest month is Luglio, when average highs reach 28°C and the mean temperature sits around 23°C. The coldest month is Gennaio, when overnight lows fall to -8°C and the daily average is -5°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 8°C shift in average temperatures.

Belleville is a moderately rainy area, receiving approximately 980mm of precipitation annually, which averages out to around 82mm per month. The wettest month is May, averaging 116mm of rainfall. June and September also tend to see above-average precipitation. The driest month is February, with just 41mm. That's 76mm less than May, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall. Snowfall is a regular feature from January to December, with around 82cm accumulating over the season. January typically sees the most snow at around 24cm.

Belleville is mildly breezy, with an average annual wind speed of 18km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 21km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in August, with average winds dropping to 15km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 19km/h in winter, 20km/h in spring, 16km/h in summer, 18km/h in autumn.

It is currently winter in Belleville, which began on December 21, 2026. Belleville is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in Luglio at around 28°C, while the coldest stretch bottoms out in Gennaio near -8°C. Spring is next, beginning on March 20, 2026 — 2 days from now.

The best time to visit Belleville is during Luglio and Agosto, when the weather is most comfortable for travellers. During these months, average temperatures hover around 23°C with modest rainfall averaging 92mm per month. By contrast, Gennaio can be quite cold with temperatures dropping to -8°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Belleville based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.