Monthly climate averages for Markham, Canada. Based on 10-year ERA5 reanalysis data.
Dfa Hot-Summer Continental
Climate OverviewMarkham, Canada in June has warm conditions, with highs averaging 23.1°C (74°F). Rain falls on about 11 days this month.
This month falls at the beginning of Summer.
Daily highs in June gradually rise from around 21°C (71°F) at the start to 25°C (77°F) by month's end.
Rainfall is heaviest during the last third of the month, while the middle tends to be drier.
The warmest days tend to fall around the 30th, averaging 25.3°C (78°F).
Compared to May, this month is about 6°C warmer with 1 fewer rainy days. Temperatures will rise further into July.
Daily averages based on historical data (2016–2025)
Daytime temperatures around 23°C (74°F) are ideal for full-day outdoor exploration.
Rain usually comes in shorter passing showers rather than all-day rain.
Recent yearly records for June have stayed close to the 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 |
Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions.
A waterproof jacket or compact umbrella is recommended for occasional showers.
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