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Thorold (ON) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Thorold.
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Climate overview of Thorold
Thorold, Ontario, Canada, experiences significant temperature variation throughout the year. Summers bring daytime highs of 26°C (79°F) in July, while winters cool to 1°C (34°F) in January.
With around 1100 mm (43 in) of annual rain/snowfall, Thorold 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 June. The sunniest month is July, with 10.2 hours of sunshine per day on average.
Thorold Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Thorold - and find the best time to visit.
Monthly Temperature in Thorold
Depending on the time of the year, temperatures range from comfortable to very cold in Thorold. Average daytime temperatures reach a comfortable 26°C (79°F) in July. In January, the coolest month of the year, temperatures drop to a very cold 1°C (34°F).
At night, temperatures range from around 20°C (68°F) in July to -6°C (21°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Thorold
Thorold has a relatively rain/snowy climate with high precipitation levels, averaging 1100 mm (43 in) of rain/snowfall annually. Despite minor fluctuations, Thorold enjoys fairly consistent precipitation throughout the year. In June, you can expect around 105 mm (4.1 in) of precipitation, while in February, Thorold receives about 73 mm (2.9 in). For more details, please visit our Thorold Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Thorold
Thorold can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 10.2 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 2.3 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Buffalo, the United States of America (36 KM, 22 Miles).
Daily hours of sunshine
Data from: Buffalo, the United States of America (36 KM, 22 Miles).
Daily percentage of sunshine
Data from: Buffalo, the United States of America (36 KM, 22 Miles).
Humidity in Thorold by Month
The relative humidity is high throughout the year in Thorold.
The city experiences its highest humidity in December, reaching 77%. In April, the humidity drops to its lowest level at 67%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Data from: Buffalo, the United States of America (36 KM, 22 Miles).
Best Time to Visit Thorold
For comfortable weather, consider visiting Thorold in August and September. Conditions are usually least favourable 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
cold
Feb
cold
Mar
cold
Apr
wet
May
good
Jun
very good
Jul
very good
Aug
excellent
Sep
excellent
Oct
good
Nov
cold
Dec
cold
- Best overall: August and September
- Warmest weather: July and August
- Most sunshine: July
- Fewest rainy days: June, July, August and September
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -6°C (21°F).
Frequently asked questions about the climate in Thorold
What is the best time to visit Thorold?
August and September typically offer the most optimal weather in Thorold. In contrast, January, February, March, April, November and December tend to have less optimal conditions. Thorold has warm summers and very cold winters.
What temperatures can I expect in Thorold?
Daytime highs range from 1°C (34°F) in January to 26°C (79°F) in July. Nighttime lows range from -6°C (21°F) to 20°C (68°F). Temperatures vary considerably through the year.
How much rain does Thorold get?
Annual rainfall is around 1100 mm (43 in). June is the wettest month with 105 mm (4.1 in), while February is the driest with 73 mm (2.9 in).
How sunny is Thorold?
Thorold receives around 2,211 hours of sunshine per year. July is the sunniest month with 307 hours, while December is the cloudiest with just 68 hours. Overall, Thorold enjoys abundant sunshine.
Thorold 3-Day Forecast
Thorold on the map
Thorold is highlighted - select any city to see its climate.
Popular in September
Where to go in September - average daytime high across popular destinations.
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