Climate Insights for Thornhill

The climate in Thornhill is temperate. The average annual temperature is 15°C and approximately 632 mm of precipitation falls per year. January is the wettest month, receiving around 99 mm of rainfall. Thornhill is in the Southern Hemisphere. The seasons are reversed: summer runs from December to February, while winter falls between June and August. The summer months are: January, December, February. The coldest months are July, August, June, when temperatures can drop to 2°C.The climate in Thornhill is temperate. The average annual temperature is 59°F and approximately 24.9 in of precipitation falls per year. January is the wettest month, receiving around 3.9 in of rainfall. Thornhill is in the Southern Hemisphere. The seasons are reversed: summer runs from December to February, while winter falls between June and August. The summer months are: January, December, February. The coldest months are July, August, June, when temperatures can drop to 35°F.

Temperatures in Thornhill vary considerably across the year, with a 26°C difference between the coldest and warmest months. The warmest month is January, when average highs reach 28°C and the mean temperature sits around 20°C. July is the coolest month, with minimum temperatures around 2°C and an average of 9°C. On average, daily temperatures fluctuate by about 15°C between overnight lows and afternoon highs. The sharpest temperature change occurs between March and April, with a 4°C shift in average temperatures.Temperatures in Thornhill vary considerably across the year, with a 47°F difference between the coldest and warmest months. The warmest month is January, when average highs reach 82°F and the mean temperature sits around 69°F. July is the coolest month, with minimum temperatures around 35°F and an average of 48°F. On average, daily temperatures fluctuate by about 27°F between overnight lows and afternoon highs. The sharpest temperature change occurs between March and April, with a 7°F shift in average temperatures.

Thornhill is a relatively dry area, receiving approximately 632 mm of precipitation annually, which averages out to around 53 mm per month. The wettest month is January, averaging 99 mm of rainfall. February and March also tend to see above-average precipitation. The driest month is August, with just 12 mm. That's 87 mm less than January, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.Thornhill is a relatively dry area, receiving approximately 24.9 in of precipitation annually, which averages out to around 2.1 in per month. The wettest month is January, averaging 3.9 in of rainfall. February and March also tend to see above-average precipitation. The driest month is August, with just 0.5 in. That's 3.4 in less than January, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Thornhill 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 July, averaging 12km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 9km/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.Thornhill is mildly breezy, with an average annual wind speed of 7mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is July, averaging 8mph, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in March, with average winds dropping to 6mph, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2mph between the calmest and windiest months.

The best time to visit Thornhill is during January, February, March, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 78 mm per month. By contrast, July can be quite cold with temperatures dropping to 2°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 best time to visit Thornhill is during January, February, March, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 65°F with modest rainfall averaging 3.1 in per month. By contrast, July can be quite cold with temperatures dropping to 35°F. 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 Thornhill 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. 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.The table below shows monthly climate averages for Thornhill based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.