What is the hottest month in Markham?

July — average highs around 81° with lows near 64°.

What is the coldest month in Markham?

February, when nights typically drop to 17° and days top out near 33°.

What is the rainiest month in Markham?

April, averaging about 4.2 in of precipitation; the driest is November at roughly 2.5 in.

How warm is Markham over the year?

The annual mean is 48°, with about 38 in of precipitation in a typical year (1991-2020 normals).

Markham Climate — Monthly Normals 1991-2020

Climate in Markham

The typical year in Markham (Ontario), from 1991-2020 normals. For what's happening now, see the current forecast; a month ahead — the 30-day outlook.

Annual mean temp

9.1°C

average across 12 months

Annual precipitation

972 mm

yearly total

Warmest month

Jul

⌀ max 27°C

Coldest month

Feb

⌀ min -8°C

Temperatures by month

typical high (orange) · typical low (blue)

Jan

-8° … -1°

Feb

-8° … 1°

Mar

-3° … 6°

Apr

2° … 11°

May

9° … 19°

Jun

15° … 24°

Jul

18° … 27°

Aug

17° … 26°

Sep

14° … 22°

Oct

7° … 15°

Nov

0° … 7°

Dec

-4° … 3°

Precipitation by month

monthly totals across the year

Jan

74 mm

Feb

69 mm

Mar

67 mm

Apr

107 mm

May

81 mm

Jun

91 mm

Jul

84 mm

Aug

90 mm

Sep

71 mm

Oct

90 mm

Nov

63 mm

Dec

85 mm

The short version

RegionOntario

Latitude43.8668°N

Annual mean9.1°C

Annual precipitation972 mm

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Weather map — Markham

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Source · 1991-2020 normals

Markham, ON Climate