- Markham ›
- Weather by month
Markham Weather by Month
Average temperatures, rainfall and humidity for Markham, Canada, month by month, built from OpenWeather's historical records. Use it to see what a typical Markham month looks like before you travel — then check the live Markham forecast for the days ahead.
Warmest month
July
27°C average high
Coolest month
February
-8°C average low
Wettest month
April
72 mm of rain
Driest month
February
18 mm of rain
Average temperature and rainfall in Markham by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | -1°C | -8°C | -25°C / 12°C | 40 mm | 79% | 15 km/h |
| February | 0°C | -8°C | -26°C / 16°C | 18 mm | 76% | 16 km/h |
| March | 5°C | -3°C | -20°C / 19°C | 36 mm | 71% | 15 km/h |
| April | 11°C | 3°C | -8°C / 29°C | 72 mm | 68% | 15 km/h |
| May | 19°C | 9°C | -3°C / 32°C | 50 mm | 66% | 12 km/h |
| June | 24°C | 15°C | 6°C / 36°C | 65 mm | 68% | 11 km/h |
| July | 27°C | 17°C | 8°C / 37°C | 46 mm | 70% | 10 km/h |
| August | 26°C | 17°C | 9°C / 34°C | 55 mm | 73% | 10 km/h |
| September | 23°C | 13°C | 2°C / 33°C | 47 mm | 75% | 11 km/h |
| October | 15°C | 8°C | -4°C / 29°C | 57 mm | 77% | 13 km/h |
| November | 8°C | 1°C | -16°C / 23°C | 42 mm | 76% | 14 km/h |
| December | 2°C | -3°C | -25°C / 16°C | 35 mm | 80% | 14 km/h |
Best time to visit Markham
The most comfortable time to visit Markham is generally June and August to September, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around April, totalling about 561 mm a year.
Travellers who prefer heat should aim for July, when highs average 27°C. April is the month to avoid if rain would spoil your plans — it averages 72 mm, roughly 4× the rainfall of February.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Markham forecast for what is happening now.