Climate Insights for Markham

York Region, Greater Toronto, Canada

Hottest
July
24°C peak75°F peak
Coldest
January
-5°C low23°F low
Wettest
April
107 mm rain4.2 in rain
Best to Visit
June, July, August
Mild temps & low rain

Climate Overview

The climate in Markham is cool. The average annual temperature is 9°C and approximately 976 mm of precipitation falls per year. Markham receives a notable amount of rainfall throughout the year, including during its driest month. Markham is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, September. The coldest months are January, February, December, when temperatures can drop to -5°C. Snowfall occurs from January to December, with around 137cm accumulating over the season.The climate in Markham is cool. The average annual temperature is 48°F and approximately 38.4 in of precipitation falls per year. Markham receives a notable amount of rainfall throughout the year, including during its driest month. Markham is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, September. The coldest months are January, February, December, when temperatures can drop to 23°F. Snowfall occurs from January to December, with around 54in accumulating over the season.

Temperature

-10°0°10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecJanMax: 0°Average: -3°Min: -5°FebMax: 1°Average: -2°Min: -5°MarMax: 4°Average: 1°Min: -1°AprMax: 8°Average: 5°Min: 3°MayMax: 13°Average: 11°Min: 8°JunMax: 19°Average: 17°Min: 14°JulMax: 24°Average: 21°Min: 19°AugMax: 24°Average: 21°Min: 19°SepMax: 21°Average: 18°Min: 16°OctMax: 15°Average: 12°Min: 10°NovMax: 8°Average: 5°Min: 3°DecMax: 3°Average: 0°Min: -2°
Max
Average
Min
0°F10°F20°F30°F40°F50°F60°F70°F80°FJanFebMarAprMayJunJulAugSepOctNovDecJanMax: 32°FAverage: 27°FMin: 23°FFebMax: 34°FAverage: 28°FMin: 23°FMarMax: 39°FAverage: 34°FMin: 30°FAprMax: 46°FAverage: 41°FMin: 37°FMayMax: 56°FAverage: 51°FMin: 47°FJunMax: 67°FAverage: 62°FMin: 58°FJulMax: 75°FAverage: 70°FMin: 66°FAugMax: 75°FAverage: 70°FMin: 66°FSepMax: 69°FAverage: 65°FMin: 61°FOctMax: 59°FAverage: 54°FMin: 50°FNovMax: 46°FAverage: 41°FMin: 37°FDecMax: 37°FAverage: 32°FMin: 29°F
Max
Average
Min

Temperatures in Markham vary considerably across the year, with a 29°C difference between the coldest and warmest months. July is the warmest month, though highs remain moderate at 24°C with a mean of 21°C. The coldest month is January, when overnight lows fall to -5°C and the daily average is -3°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows. The sharpest temperature change occurs between October and November, with a 7°C shift in average temperatures.Temperatures in Markham vary considerably across the year, with a 52°F difference between the coldest and warmest months. July is the warmest month, though highs remain moderate at 75°F with a mean of 70°F. The coldest month is January, when overnight lows fall to 23°F and the daily average is 27°F. Daily temperature variation is modest, with an average difference of 9°F between highs and lows. The sharpest temperature change occurs between October and November, with a 13°F shift in average temperatures.

Precipitation

0mm25mm50mm75mm100mm125mm150mmJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 84mmSnow: 31mmFebPrecipitation: 76mmSnow: 39mmMarPrecipitation: 91mmSnow: 17mmAprPrecipitation: 107mmSnow: 7mmMayPrecipitation: 82mmSnow: 0mmJunPrecipitation: 74mmSnow: 0mmJulPrecipitation: 73mmSnow: 0mmAugPrecipitation: 68mmSnow: 0mmSepPrecipitation: 59mmSnow: 0mmOctPrecipitation: 91mmSnow: 0mmNovPrecipitation: 76mmSnow: 10mmDecPrecipitation: 95mmSnow: 32mm
Precipitation
Snow
0in2in4in6in8in10in12in14inJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 3.3inSnow (in): 12inFebPrecipitation: 3inSnow (in): 15inMarPrecipitation: 3.6inSnow (in): 7inAprPrecipitation: 4.2inSnow (in): 3inMayPrecipitation: 3.2inSnow (in): 0inJunPrecipitation: 2.9inSnow (in): 0inJulPrecipitation: 2.9inSnow (in): 0inAugPrecipitation: 2.7inSnow (in): 0inSepPrecipitation: 2.3inSnow (in): 0inOctPrecipitation: 3.6inSnow (in): 0inNovPrecipitation: 3inSnow (in): 4inDecPrecipitation: 3.7inSnow (in): 13in
Precipitation
Snow (in)

Markham is a moderately rainy area, receiving approximately 976 mm of precipitation annually, which averages out to around 81 mm per month. The wettest month is April, averaging 107 mm of rainfall. December and March also tend to see above-average precipitation. The driest month is September, with just 59 mm. That's 47 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 137cm accumulating over the season. February typically sees the most snow at around 39cm.Markham is a moderately rainy area, receiving approximately 38.4 in of precipitation annually, which averages out to around 3.2 in per month. The wettest month is April, averaging 4.2 in of rainfall. December and March also tend to see above-average precipitation. The driest month is September, with just 2.3 in. That's 1.9 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 54in accumulating over the season. February typically sees the most snow at around 15in.

Wind

0km/h5km/h10km/h15km/h20km/h25km/hJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 22km/hFebWind Speed: 22km/hMarWind Speed: 20km/hAprWind Speed: 18km/hMayWind Speed: 14km/hJunWind Speed: 14km/hJulWind Speed: 13km/hAugWind Speed: 14km/hSepWind Speed: 15km/hOctWind Speed: 19km/hNovWind Speed: 20km/hDecWind Speed: 22km/h
Wind Speed
0mph5mph10mph15mphJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 13mphFebWind Speed: 13mphMarWind Speed: 12mphAprWind Speed: 11mphMayWind Speed: 9mphJunWind Speed: 9mphJulWind Speed: 8mphAugWind Speed: 9mphSepWind Speed: 9mphOctWind Speed: 12mphNovWind Speed: 13mphDecWind Speed: 13mph
Wind Speed

Markham is mildly breezy, with an average annual wind speed of 18km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 22km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in July, with average winds dropping to 13km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 9km/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 22km/h in winter, 17km/h in spring, 14km/h in summer, 18km/h in autumn.Markham is moderately windy, with an average annual wind speed of 11mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is January, averaging 13mph, which can feel quite blustery and may affect outdoor activities. The calmest conditions occur in July, with average winds dropping to 8mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5mph 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 13mph in winter, 11mph in spring, 8mph in summer, 11mph in autumn.

Best Time to Visit

Jan-3°27°F
Feb-2°28°F
Mar1°34°F
Apr5°41°F
May11°51°F
Jun17°62°F
Jul21°70°F
Aug21°70°F
Sep18°65°F
Oct12°54°F
Nov5°41°F
Dec0°32°F

The best time to visit Markham 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 69 mm per month. By contrast, January can be quite cold with temperatures dropping to -5°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.The best time to visit Markham is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 67°F with modest rainfall averaging 2.7 in per month. By contrast, January can be quite cold with temperatures dropping to 23°F. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

Monthly Climate Data

The table below shows monthly climate averages for Markham 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 Markham 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
-5 °C23 °F
0 °C32 °F
22 km/h13 mph
84 mm3.3 in
31 cm12 in
Feb
-5 °C23 °F
1 °C34 °F
22 km/h13 mph
76 mm3 in
39 cm15 in
Mar
-1 °C30 °F
4 °C39 °F
20 km/h12 mph
91 mm3.6 in
17 cm7 in
Apr
3 °C37 °F
8 °C46 °F
18 km/h11 mph
107 mm4.2 in
7 cm3 in
May
8 °C47 °F
13 °C56 °F
14 km/h9 mph
82 mm3.2 in
0 cm0 in
Jun
14 °C58 °F
19 °C67 °F
14 km/h9 mph
74 mm2.9 in
0 cm0 in
Jul
19 °C66 °F
24 °C75 °F
13 km/h8 mph
73 mm2.9 in
0 cm0 in
Aug
19 °C66 °F
24 °C75 °F
14 km/h9 mph
68 mm2.7 in
0 cm0 in
Sep
16 °C61 °F
21 °C69 °F
15 km/h9 mph
59 mm2.3 in
0 cm0 in
OctCurrent
10 °C50 °F
15 °C59 °F
19 km/h12 mph
91 mm3.6 in
0 cm0 in
Nov
3 °C37 °F
8 °C46 °F
20 km/h13 mph
76 mm3 in
10 cm4 in
Dec
-2 °C29 °F
3 °C37 °F
22 km/h13 mph
95 mm3.7 in
32 cm13 in