Climate averages 1991–2020
Markham weather
in June.
A warm, moderately wet month: the 3rd warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a warm month in Markham: daytime highs average 22.8°C and nights cool to about 14.1°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 77 mm of rain on roughly 10 days, which makes June a moderately wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 24 min on an average June day.
The nearest other city in this atlas is Pickering (11 km away). In June its highs average 21.6°C, 1.2°C cooler than Markham, with 93 mm of rain.
Among the 86 cities listed in Canada, Markham ranks joint 36th of 86 for the warmest June highs and joint 13th of 86 for the driest June (rainfall, lowest first). The mean June high of those 86 cities is 21.4°C; Markham is 1.3°C warmer than that mean.
From June to July, average highs rise by 2.9°C to 25.7°C, and monthly rainfall falls from 77 mm to 68 mm.
The annual picture
June in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Markham climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -1.7°C-9.5°C | -9.5°C | 81 | 11.8 | 9.39 h |
| February | -0.9°C-9.7°C | -9.7°C | 59 | 8.7 | 10.410 h |
| March | 3.9°C-4.8°C | -4.8°C | 68 | 9.9 | 11.912 h |
| April | 10.7°C1.7°C | 1.7°C | 92 | 11.0 | 13.413 h |
| May | 17.5°C8.2°C | 8.2°C | 78 | 10.4 | 14.715 h |
| June, selected | 22.8°C14.1°C | 14.1°C | 77 | 10.2 | 15.415 h |
| July | 25.7°C17.2°C | 17.2°C | 68 | 9.6 | 15.115 h |
| August | 24.9°C16.9°C | 16.9°C | 67 | 8.9 | 14.014 h |
| September | 21.1°C13.3°C | 13.3°C | 81 | 9.0 | 12.613 h |
| October | 14.0°C7.1°C | 7.1°C | 91 | 11.9 | 11.011 h |
| November | 7.0°C0.9°C | 0.9°C | 88 | 11.2 | 9.710 h |
| December | 1.5°C-4.8°C | -4.8°C | 81 | 12.1 | 9.09 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
June in nearby cities
- Pickering in JuneCanada · 11 kmHigh 21.6°C · Low 14.0°C · 93 mm rain
- Richmond Hill in JuneCanada · 14 kmHigh 23.0°C · Low 13.7°C · 77 mm rain
- Thornhill in JuneCanada · 14 kmHigh 22.4°C · Low 14.2°C · 77 mm rain
- Ajax in JuneCanada · 19 kmHigh 22.1°C · Low 14.8°C · 76 mm rain
- Vaughan in JuneCanada · 19 kmHigh 22.8°C · Low 13.8°C · 77 mm rain
- Toronto in JuneCanada · 21 kmHigh 21.5°C · Low 14.2°C · 77 mm rain
- Newmarket in JuneCanada · 26 kmHigh 23.4°C · Low 13.7°C · 88 mm rain
- Whitby in JuneCanada · 27 kmHigh 22.0°C · Low 14.8°C · 93 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Markham) is explained once on the Markham year overview and on the Sources, method and limits page.