Climate Insights for Thornton

Simcoe County, Ontario, Canada

Hottest
July
27°C peak80°F peak
Coldest
January
-9°C low15°F low
Wettest
April
93 mm rain3.7 in rain
Best to Visit
June, July, August
Mild temps & low rain

Climate Overview

The climate in Thornton is cool. The average annual temperature is 8°C and approximately 895 mm of precipitation falls per year. Thornton receives a notable amount of rainfall throughout the year, including during its driest month. Thornton 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 -9°C. Snowfall occurs from January to December, with around 174cm accumulating over the season.The climate in Thornton is cool. The average annual temperature is 46°F and approximately 35.3 in of precipitation falls per year. Thornton receives a notable amount of rainfall throughout the year, including during its driest month. Thornton 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 15°F. Snowfall occurs from January to December, with around 68in accumulating over the season.

Temperature

-10°0°10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecJanMax: -2°Average: -6°Min: -9°FebMax: 0°Average: -5°Min: -9°MarMax: 5°Average: 0°Min: -4°AprMax: 11°Average: 6°Min: 1°MayMax: 19°Average: 13°Min: 8°JunMax: 24°Average: 18°Min: 13°JulMax: 27°Average: 21°Min: 16°AugMax: 25°Average: 20°Min: 15°SepMax: 22°Average: 16°Min: 12°OctMax: 15°Average: 10°Min: 6°NovMax: 7°Average: 3°Min: -1°DecMax: 1°Average: -2°Min: -5°
Max
Average
Min
0°F10°F20°F30°F40°F50°F60°F70°F80°FJanFebMarAprMayJunJulAugSepOctNovDecJanMax: 29°FAverage: 22°FMin: 15°FFebMax: 32°FAverage: 24°FMin: 16°FMarMax: 41°FAverage: 32°FMin: 25°FAprMax: 52°FAverage: 42°FMin: 35°FMayMax: 66°FAverage: 56°FMin: 46°FJunMax: 75°FAverage: 65°FMin: 56°FJulMax: 80°FAverage: 70°FMin: 61°FAugMax: 78°FAverage: 68°FMin: 60°FSepMax: 72°FAverage: 61°FMin: 53°FOctMax: 59°FAverage: 50°FMin: 43°FNovMax: 44°FAverage: 37°FMin: 31°FDecMax: 34°FAverage: 28°FMin: 22°F
Max
Average
Min

Thornton has a wide annual temperature range, spanning 36°C from the coldest to warmest months. The warmest month is July, when average highs reach 27°C and the mean temperature sits around 21°C. The coldest month is January, when overnight lows fall to -9°C and the daily average is -6°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 7°C shift in average temperatures.Thornton has a wide annual temperature range, spanning 65°F from the coldest to warmest months. The warmest month is July, when average highs reach 80°F and the mean temperature sits around 70°F. The coldest month is January, when overnight lows fall to 15°F and the daily average is 22°F. On average, daily temperatures fluctuate by about 17°F between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 13°F shift in average temperatures.

Precipitation

0mm25mm50mm75mm100mmJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 65mmSnow: 37mmFebPrecipitation: 61mmSnow: 42mmMarPrecipitation: 70mmSnow: 22mmAprPrecipitation: 93mmSnow: 12mmMayPrecipitation: 78mmSnow: 0mmJunPrecipitation: 89mmSnow: 0mmJulPrecipitation: 82mmSnow: 0mmAugPrecipitation: 84mmSnow: 0mmSepPrecipitation: 61mmSnow: 0mmOctPrecipitation: 78mmSnow: 2mmNovPrecipitation: 61mmSnow: 19mmDecPrecipitation: 73mmSnow: 40mm
Precipitation
Snow
0in2in4in6in8in10in12in14in16inJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 2.5inSnow (in): 15inFebPrecipitation: 2.4inSnow (in): 16inMarPrecipitation: 2.8inSnow (in): 9inAprPrecipitation: 3.7inSnow (in): 5inMayPrecipitation: 3.1inSnow (in): 0inJunPrecipitation: 3.5inSnow (in): 0inJulPrecipitation: 3.2inSnow (in): 0inAugPrecipitation: 3.3inSnow (in): 0inSepPrecipitation: 2.4inSnow (in): 0inOctPrecipitation: 3.1inSnow (in): 1inNovPrecipitation: 2.4inSnow (in): 7inDecPrecipitation: 2.9inSnow (in): 16in
Precipitation
Snow (in)

Thornton is a moderately rainy area, receiving approximately 895 mm of precipitation annually, which averages out to around 75 mm per month. The wettest month is April, averaging 93 mm of rainfall. June and August also tend to see above-average precipitation. The driest month is February, with just 61 mm. That's 33 mm less than April, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Snowfall is a regular feature from January to December, with around 174cm accumulating over the season. February typically sees the most snow at around 42cm.Thornton is a moderately rainy area, receiving approximately 35.3 in of precipitation annually, which averages out to around 3 in per month. The wettest month is April, averaging 3.7 in of rainfall. June and August also tend to see above-average precipitation. The driest month is February, with just 2.4 in. That's 1.3 in less than April, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Snowfall is a regular feature from January to December, with around 68in accumulating over the season. February typically sees the most snow at around 16in.

Wind

0km/h5km/h10km/h15km/hJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 13km/hFebWind Speed: 14km/hMarWind Speed: 14km/hAprWind Speed: 13km/hMayWind Speed: 11km/hJunWind Speed: 11km/hJulWind Speed: 10km/hAugWind Speed: 10km/hSepWind Speed: 10km/hOctWind Speed: 12km/hNovWind Speed: 14km/hDecWind Speed: 13km/h
Wind Speed
0mph5mph10mphJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 8mphFebWind Speed: 9mphMarWind Speed: 9mphAprWind Speed: 8mphMayWind Speed: 7mphJunWind Speed: 7mphJulWind Speed: 6mphAugWind Speed: 6mphSepWind Speed: 6mphOctWind Speed: 8mphNovWind Speed: 8mphDecWind Speed: 8mph
Wind Speed

Thornton is mildly breezy, with an average annual wind speed of 12km/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 14km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 10km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4km/h gap 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 13km/h in winter, 13km/h in spring, 10km/h in summer, 12km/h in autumn.Thornton is moderately windy, with an average annual wind speed of 8mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is March, averaging 9mph, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in July, with average winds dropping to 6mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3mph gap 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 8mph in winter, 8mph in spring, 6mph in summer, 7mph in autumn.

Best Time to Visit

Jan-6°22°F
Feb-5°24°F
Mar0°32°F
Apr6°42°F
May13°56°F
Jun18°65°F
Jul21°70°F
Aug20°68°F
Sep16°61°F
Oct10°50°F
Nov3°37°F
Dec-2°28°F

The best time to visit Thornton is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 79 mm per month. By contrast, January can be quite cold with temperatures dropping to -9°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 Thornton is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 66°F with modest rainfall averaging 3.1 in per month. By contrast, January can be quite cold with temperatures dropping to 15°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.

Monthly Climate Data

The table below shows monthly climate averages for Thornton 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.The table below shows monthly climate averages for Thornton 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. Snow is measured in inches (in) and reflects average monthly snowfall accumulation. 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.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
-9 °C15 °F
-2 °C29 °F
13 km/h8 mph
65 mm2.5 in
37 cm15 in
Feb
-9 °C16 °F
0 °C32 °F
14 km/h9 mph
61 mm2.4 in
42 cm16 in
Mar
-4 °C25 °F
5 °C41 °F
14 km/h9 mph
70 mm2.8 in
22 cm9 in
Apr
1 °C35 °F
11 °C52 °F
13 km/h8 mph
93 mm3.7 in
12 cm5 in
May
8 °C46 °F
19 °C66 °F
11 km/h7 mph
78 mm3.1 in
0 cm0 in
Jun
13 °C56 °F
24 °C75 °F
11 km/h7 mph
89 mm3.5 in
0 cm0 in
Jul
16 °C61 °F
27 °C80 °F
10 km/h6 mph
82 mm3.2 in
0 cm0 in
Aug
15 °C60 °F
25 °C78 °F
10 km/h6 mph
84 mm3.3 in
0 cm0 in
Sep
12 °C53 °F
22 °C72 °F
10 km/h6 mph
61 mm2.4 in
0 cm0 in
OctCurrent
6 °C43 °F
15 °C59 °F
12 km/h8 mph
78 mm3.1 in
2 cm1 in
Nov
-1 °C31 °F
7 °C44 °F
14 km/h8 mph
61 mm2.4 in
19 cm7 in
Dec
-5 °C22 °F
1 °C34 °F
13 km/h8 mph
73 mm2.9 in
40 cm16 in