Monthly climate averages for Markham, Canada. Based on 10-year ERA5 reanalysis data.
Dfa Hot-Summer Continental
Climate OverviewMarkham, Canada in July has warm conditions, with highs averaging 26.3°C (79°F). Rain falls on about 13 days this month.
This month falls at the middle of Summer.
Temperatures remain fairly steady throughout July, with daily highs around 26°C (79°F).
Rainfall is heaviest during the middle of the month, while the first third tends to be drier.
Expect around 13.0h of sunshine at the start of July, decreasing to 12.3h by the end.
The warmest days tend to fall around the 5th, averaging 27°C (81°F).
Compared to June, this month is about 3°C warmer with 2 more rainy days.
Daily averages based on historical data (2016–2025)
Daytime temperatures around 26°C (79°F) are ideal for full-day outdoor exploration. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.
Rain usually comes in shorter passing showers rather than all-day rain.
1 of the last 5 yearly records were warmer than this month's long-run average.
| Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | -1°C / -7°C | -5°C / -12°C | 10days (67 mm) Wet | 4.9h Fair | 76% Humid | 1.9 Low | Poor | View Details |
| February | 1°C / -7°C | -4°C / -12°C | 10days (62 mm) Wet | 6.4h Fair | 74% Muggy | 3 Moderate | Poor | View Details |
| March | 5°C / -3°C | 1°C / -8°C | 12days (73 mm) Wet | 7.5h Good | 69% Muggy | 3.9 Moderate | Poor | View Details |
| April | 11°C / 2°C | 8°C / -2°C | 13days (98 mm) Wet | 8.7h Good | 68% Muggy | 4.8 Moderate | Poor | View Details |
| May best | 18°C / 9°C | 16°C / 6°C | 12days (80 mm) Wet | 10.5h Excellent | 69% Muggy | 6 High | Good | View Details |
| June best | 23°C / 15°C | 24°C / 14°C | 11days (95 mm) Wet | 11.8h Excellent | 68% Muggy | 6.4 High | Excellent | View Details |
| July best | 26°C / 18°C | 28°C / 19°C | 13days (89 mm) Wet | 12.2h Excellent | 71% Muggy | 6.8 High | Excellent | View Details |
| August best | 25°C / 18°C | 27°C / 18°C | 10days (90 mm) Wet | 11.2h Excellent | 73% Muggy | 6 High | Excellent | View Details |
| September best | 22°C / 14°C | 22°C / 14°C | 8days (62 mm) Wet | 9.7h Good | 74% Muggy | 5.1 High | Excellent | View Details |
| October | 15°C / 9°C | 13°C / 6°C | 11days (81 mm) Wet | 6.9h Fair | 74% Muggy | 3.3 Moderate | Fair | View Details |
| November | 7°C / 1°C | 4°C / -3°C | 11days (60 mm) Wet | 5.5h Fair | 75% Muggy | 2.1 Moderate | Poor | View Details |
| December | 2°C / -4°C | -2°C / -8°C | 12days (74 mm) Wet | 4.2h Fair | 77% Humid | 1.5 Low | Poor | View Details |
Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces.
A waterproof jacket or compact umbrella is recommended for occasional showers.
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