Climate Insights for Cowansville

The climate in Cowansville is cool. The average annual temperature is 7°C and approximately 1319mm of precipitation falls per year. Cowansville receives a notable amount of rainfall throughout the year, including during its driest month. Cowansville is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, February, December, when temperatures can drop to -11°C. Cowansville experiences heavy snowfall, typically from January through December.

Cowansville has a wide annual temperature range, spanning 37°C from the coldest to warmest months. The warmest month is July, when average highs reach 26°C and the mean temperature sits around 21°C. The coldest month is January, when overnight lows fall to -11°C and the daily average is -7°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 8°C shift in average temperatures.

Cowansville is a fairly wet location, receiving approximately 1319mm of precipitation annually, which averages out to around 110mm per month. The wettest month is October, averaging 137mm of rainfall. June and August also tend to see above-average precipitation. The driest month is September, with just 81mm. That's 56mm less than October, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Cowansville receives heavy snowfall, accumulating around 251cm annually from January through December. The snowiest month is January, with approximately 59cm. Winter travel should account for significant snow cover.

Cowansville is relatively calm, with an average annual wind speed of 11km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 13km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 10km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h 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 12km/h in winter, 12km/h in spring, 10km/h in summer, 11km/h in autumn.

It is currently autumn in Cowansville, which began on September 23, 2026. Cowansville 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 July at around 26°C, while the coldest stretch bottoms out in January near -11°C. Winter is next, beginning on December 21, 2026 (87 days from now).

The best time to visit Cowansville is during September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 81mm per month. By contrast, July can be uncomfortably hot with highs reaching 26°C, while January is the coldest period with lows dropping to -11°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 Cowansville 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.