The 5 most beautiful lakes in Canada
Explore Canada's stunning lakes: Lake Louise, Lake Superior, Maligne Lake, Emerald Lake, and Lake Okanagan, each offering unique beauty and activities.
Thornbury (ON) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Thornbury.
–
Climate overview of Thornbury
Thornbury, Ontario, Canada, sees big temperature differences between seasons, with July peaking at 24°C (75°F) and February dropping to -2°C (28°F).
With around 1102 mm (43 in) of annual rain/snowfall, Thornbury 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 November.
Thornbury Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Thornbury - and find the best time to visit.
Monthly Temperature in Thornbury
Visitors to Thornbury can expect significant temperature changes throughout the year. Average daytime temperatures reach a comfortable 24°C (75°F) in July. In February, the coolest month of the year, temperatures drop to a very cold -2°C (28°F).
At night, temperatures range from around 17°C (63°F) in July to -10°C (14°F) in February.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Thornbury
Thornbury is known for its substantial rain/snowfall, with annual precipitation reaching 1102 mm (43 in). Despite minor fluctuations, Thornbury enjoys fairly consistent precipitation throughout the year. In November, you can expect around 109 mm (4.3 in) of precipitation, while in March, Thornbury receives about 71 mm (2.8 in). For more details, please visit our Thornbury 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 Thornbury
Conditions in Thornbury are generally most comfortable in June, July, August and September. They are typically least comfortable in January, February, March, April, November and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
very cold
Feb
very cold
Mar
cold
Apr
cold
May
good
Jun
excellent
Jul
excellent
Aug
excellent
Sep
excellent
Oct
mixed
Nov
wet
Dec
cold
- Best overall: June, July, August and September
- Warmest weather: July and August
- Fewest rainy days: April, May, July and August
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: February, with freezing nights around -10°C (14°F).
Frequently asked questions about the climate in Thornbury
What is the best time to visit Thornbury?
June, July, August and September typically offer the most optimal weather in Thornbury. In contrast, January, February, March, April, November and December tend to have less optimal conditions. Thornbury has warm summers and very cold winters.
What temperatures can I expect in Thornbury?
Daytime highs range from -2°C (28°F) in February to 24°C (75°F) in July. Nighttime lows range from -10°C (14°F) to 17°C (63°F). Temperatures vary considerably through the year.
How much rain does Thornbury get?
Annual rainfall is around 1102 mm (43 in). November is the wettest month with 109 mm (4.3 in), while March is the driest with 71 mm (2.8 in).
Thornbury 3-Day Forecast
Thornbury on the map
Thornbury is highlighted - select any city to see its climate.
Popular in September
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) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
The 5 most beautiful lakes in Canada
Canada in September: Where Is the Best Weather?
Compare September weather in Toronto, Montreal, Vancouver, Quebec City and Osoyoos to find Canada's warmest, driest and sunniest destinations.
Canoeing the south Nahannii
The South Nahanni in the northwest of Canada is one of the most impressive wilderness rivers in the world. Canoeing the south Nahanni is something you must add to your bucket list.
See Polar Bears in Churchill Canada
Thousands of bears gather at the small town of Churchill. In the evening the northern lights give a light show against the dark evening sky. An unforgettable experience.