Photo: Raysonho @ Open Grid Scheduler / Grid Engine · CC0 · Wikimedia Commons
MarkhamReport this photo · linked, not stored
MarkhamReport this photo · linked, not stored
Climate guideThirty-year normals for Markham
Markham climate by month
Warm-summer humid continental · DfbBest May–Jun · Sep
Annual mean9°day and night
Seasonal swing27°warmest vs coolest
Precipitation901 mm154 wet days a year
43.87° N, 79.27° WElevation 168 mUTC−4 · Eastern Daylight Time
When to goMarkham · weather score
Best timeMay–Jun · Sep
October: high / low14° / 6°
iSummary
What the weather is like
Markham has a warm-summer humid continental climate (Köppen Dfb): warm summers, cold winters and precipitation in every season.
The warmest month is July, when afternoons average 27° and nights 17°. January is the coolest month, with highs of -1° and lows of -9°. The difference between the warmest and the coolest month is about 27°, a large swing typical of continental interiors.
About 901 mm of precipitation falls in an average year. December is the wettest month (67 mm, 16 wet days) and May the driest (85 mm, 11 wet days). Cloud cover ranges from 28% in July to 53% in January.
Compared with Ottawa, the capital, Markham is 0.2° warmer on a July afternoon and receives less precipitation over the year.
Year in figures
- Hottest afternoons
- 27° · July
- Coldest nights
- -9° · January
- Wettest month
- December
- Driest month
- May
- Clearest skies
- July · 28% cloud
- Longest day
- 15 h 27 min
- Shortest day
- 8 h 56 min
iiCharts
Twelve months at a glance
Temperature and precipitation
Daily high/low range bars, monthly precipitation columnsTemperature curve
Average high, lowDaylight
Hours between sunrise and sunset on the 15th of each monthiiiData table
Climate normals month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | -1° | 0° | 5° | 12° | 20° | 25° | 27° | 26° | 22° | 14° | 8° | 2° |
| Average low | -9° | -8° | -3° | 3° | 9° | 14° | 17° | 16° | 12° | 6° | 0° | -5° |
| Precipitation | 66 mm | 58 mm | 59 mm | 75 mm | 85 mm | 80 mm | 86 mm | 87 mm | 79 mm | 73 mm | 86 mm | 67 mm |
| Wet days (≥1 mm) | 13.5 | 10.8 | 12 | 11.5 | 10.7 | 13.3 | 14.2 | 14 | 11.8 | 13.7 | 12.8 | 15.5 |
| Cloud cover | 53% | 46% | 43% | 42% | 39% | 33% | 28% | 29% | 34% | 40% | 49% | 53% |
| Daylight | 9h 16 | 10h 30 | 11h 53 | 13h 26 | 14h 44 | 15h 27 | 15h 09 | 14h 01 | 12h 32 | 11h 03 | 9h 40 | 8h 56 |
| Month score | 17 | 26 | 24 | 37 | 71 | 67 | 59 | 63 | 71 | 44 | 20 | 15 |
ivMonth by month
Markham in every month
January17
-1° / -9°
66 mm · 13.5 wet days
February26
0° / -8°
58 mm · 10.8 wet days
March24
5° / -3°
59 mm · 12 wet days
April37
12° / 3°
75 mm · 11.5 wet days
May71
20° / 9°
85 mm · 10.7 wet days
June67
25° / 14°
80 mm · 13.3 wet days
July59
27° / 17°
86 mm · 14.2 wet days
August63
26° / 16°
87 mm · 14 wet days
September71
22° / 12°
79 mm · 11.8 wet days
October44
14° / 6°
73 mm · 13.7 wet days
November20
8° / 0°
86 mm · 12.8 wet days
December15
2° / -5°
67 mm · 15.5 wet days