What is the hottest month in Guelph?

July — average highs around 81° with lows near 62°.

What is the coldest month in Guelph?

February, when nights typically drop to 16° and days top out near 33°.

What is the rainiest month in Guelph?

June, averaging about 3.9 in of precipitation; the driest is November at roughly 2.5 in.

How warm is Guelph over the year?

The annual mean is 47°, with about 37 in of precipitation in a typical year (1991-2020 normals).

Guelph Climate — Monthly Normals 1991-2020

Climate in Guelph

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

Annual mean temp

8.6°C

average across 12 months

Annual precipitation

933 mm

yearly total

Warmest month

Jul

⌀ max 27°C

Coldest month

Feb

⌀ min -9°C

Temperatures by month

typical high (orange) · typical low (blue)

Jan

-9° … -2°

Feb

-9° … 0°

Mar

-4° … 6°

Apr

1° … 12°

May

8° … 19°

Jun

14° … 25°

Jul

17° … 27°

Aug

16° … 26°

Sep

13° … 22°

Oct

7° … 15°

Nov

0° … 7°

Dec

-5° … 2°

Precipitation by month

monthly totals across the year

Jan

74 mm

Feb

70 mm

Mar

67 mm

Apr

94 mm

May

72 mm

Jun

99 mm

Jul

86 mm

Aug

78 mm

Sep

68 mm

Oct

80 mm

Nov

64 mm

Dec

81 mm

The short version

RegionOntario

Latitude43.5459°N

Annual mean8.6°C

Annual precipitation933 mm

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Weather map — Guelph

Guelph →

Source · 1991-2020 normals

Guelph, ON Climate