Louiseville (QC) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Louiseville.
Climate overview of Louiseville
The climate in Louiseville, Quebec, Canada, is marked by large temperature swings across the seasons, ranging from 27°C (81°F) in July to -5°C (23°F) in January.
With around 1137 mm (45 in) of annual rain/snowfall, Louiseville has a notably wet climate. However, this rain/snowfall is not evenly distributed, the city has warm summers and very cold winters. The wettest month is October.
Louiseville Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Louiseville - and find the best time to visit.
Monthly Temperature in Louiseville
In Louiseville, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a comfortable 27°C (81°F) in July. In January, the coolest month of the year, temperatures drop to a very cold -5°C (23°F).
At night, temperatures range from around 16°C (61°F) in July to -15°C (5°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Louiseville
Louiseville experiences significant rain/snowfall throughout the year, averaging 1137 mm (45 in) of precipitation annually. Despite minor fluctuations, Louiseville enjoys fairly consistent precipitation throughout the year. In October, you can expect around 111 mm (4.4 in) of precipitation, while in February, Louiseville receives about 72 mm (2.8 in). For more details, please visit our Louiseville Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Louiseville
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May and September
- Warmest weather: July and August
- Fewer rainy days: January, February, March, April and September
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -15°C (5°F).
Frequently asked questions about the climate in Louiseville
What is the best time to visit Louiseville?
May and September typically offer the most optimal weather in Louiseville. In contrast, January, February, March, April, October, November and December tend to have less optimal conditions. Louiseville has warm summers and very cold winters.
What temperatures can I expect in Louiseville?
Daytime highs range from -5°C (23°F) in January to 27°C (81°F) in July. Nighttime lows range from -15°C (5°F) to 16°C (61°F). Temperatures vary considerably through the year.
How much rain does Louiseville get?
Annual rainfall is around 1137 mm (45 in). October is the wettest month with 111 mm (4.4 in), while February is the driest with 72 mm (2.8 in).
Louiseville 3-Day Forecast
Louiseville on the map
Louiseville is highlighted - select any city to see its climate.
Popular this month
Where to go in September - average daytime high across popular destinations.
Toronto
22°C (72°F) Niagara Falls23°C (73°F) Montréal
22°C (72°F) Ottawa22°C (72°F) Quebec City
20°C (68°F) Vancouver19°C (66°F) Calgary19°C (66°F) Whistler15°C (59°F) 
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