Climate in Thorncliffe Park · ECCC 1991–2020 normals

Frosty mornings in Thorncliffe Park are scarcer than in 89% of Canadian towns

Expect July afternoons of about 27.0°C. Temperatures cover 34°C across the year, low to high. Its July heat outdoes that of 86% of Canadian towns. About 104 days a year bring 1 mm of precipitation or more.

July afternoons: warmer than 86% of Canadian towns

January nights: milder than 87% of Canadian towns

Rain and snow a year: drier than 58% of Canadian towns

Environment and Climate Change Canada’s 1991–2020 normals at its Toronto (City) station, 5.8 km south-west.

July high

27.0°C

Typical Canadian town 25.5°C

January low

−6.7°C

Typical Canadian town −13.5°C

Rain & snow a year

823 mm

Typical Canadian town 883 mm

Snowfall a year

146 cm

Typical Canadian town 141 cm

Frost days

101

a year at 0°C or below

Frost-free days

208

11 Apr to 6 Nov

A year in Thorncliffe Park at a glance

Each month’s typical high and low, in °C.

Jan0°C−7°CColdest nightsSnowiest

Feb1°C−6°C

Mar5°C−2°C

Apr12°C4°CLast frost ~11 Apr

May19°C10°C

Jun24°C15°CWettest

Jul27°C18°CWarmest

Aug26°C18°C

Sep22°C14°C

Oct15°C8°C

Nov now8°C2°CFirst frost ~6 Nov

Dec3°C−3°C

What stands out about Thorncliffe Park’s climate

Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.

Milder than 87% of Canadian townsJanuary nights average −6.7°C, the coldest of the year.Warmer than 86% of Canadian townsJuly afternoons average 27.0°C, the warmest of the year.A narrower year than 84% of Canadian townsFrom January nights to July afternoons, the year spans 33.7°C.

A normal year

What a year in Thorncliffe Park feels like

Each season’s and each month’s usual high and low, 1991–2020.

Winter

1°C / −5°C

176 mm, with 107 cm of snow

Spring

12°C / 4°C

207 mm, with 27 cm of snow

Summer

26°C / 17°C

230 mm of rain and snow, the wettest season

Autumn

15°C / 8°C

209 mm, with 12 cm of snow

−15°

−10°

−5°

0°

5°

10°

15°

20°

25°

30°

35°

0°C−7°C

1°C−6°C

5°C−2°C

12°C4°C

19°C10°C

24°C15°C

27°C18°C

26°C18°C

22°C14°C

15°C8°C

8°C2°C

3°C−3°C

JanFebMarAprMayJunJulAugSepOctNovDec

Best months to be outsideMayJunJulAugSepHighs of 17–27°C and nights of 8°C or more

Frost & warm days

101 frost days and 124 days above 20°C a year

The frost season runs November to April, peaking in January at about 26 nights. Heat of 30°C or more comes on about 14 days a year.

208 frost-free days · average dates, 1991–2020

11 Apr 6 Nov

JanFebMarAprMayJunJulAugSepOctNovDec

101

Frost days a year (0°C or below)

Fewer frosts than 89% of Canadian towns

Days that stay below 0°C

Nights a year below −20°C

124

Days a year above 20°C

Days a year above 30°C

Frost days by month

Average days at 0°C or below

JFMAMJJASOND

Days above 20°C by month

Average days

JFMAMJJASOND

Rain & snow

About 823 mm of rain and snow a year

The most falls in June, the least in March.

823 mm

Rain and snow a year

Drier than 58% of Canadian towns

82 mm

June, the wettest month

53 mm

March, the driest month

Rain and snow by month

Millimetres

82 mm

JFMAMJJASOND

Snow

About 146 cm of snow a year

Snow falls from November to April, most of all in January (about 40 cm).

146 cm

Snowfall a year

Snowier than 54% of Canadian towns

Days a year with 0.2 cm of snow or more

Snowfall by month

Centimetres

40 cm

JFMAMJJASOND

ECCC’s Toronto (City) normals leave snowfall out; the figures here come from Toronto Buttonville (Airport), 18 km away.

Heating

Heating a home in Thorncliffe Park

94% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.

3,434 heating degree days (below 18°C)a year, 1991–2020

2,583 growing degree days (above 5°C)a year, 1991–2020

Think of it as a year’s worth of daily shortfalls below 18°C, added up. Homes here need less heating than 90% of Canadian towns.

Living here

Living with Thorncliffe Park’s climate

What the normals mean for a garden, a day outside and the depth of winter.

The garden window

A normal year gives the garden about 208 frost-free days, roughly 11 April to 6 November.

Get outside

The outdoor season by the averages is May, Jun, Jul, Aug and Sep, with highs of 17–27°C and lows of 8°C or more.

Parks & trails →

Humidex

The air feels heavier than 30 on the humidex for about 59 days a year.

Storms and extremes

Extremes don’t show in averages: floods, wildfire smoke and ice storms are on Thorncliffe Park’s hazards page.

Flood & hazards →

Weather station

ECCC’s normals location: Toronto (City)

Behind the 1991–2020 normals for Toronto (City) are 2 stations, which ECCC combines into one record.

Distance from the town	5.8 km south-west
Station altitude	113 m
Completeness	meets the WMO “3 and 5” rule
WMO standard normals	No
Snowfall from	Toronto Buttonville (Airport), 18 km
Coldest reading, 1991–2020	−25.9°C
Hottest reading, 1991–2020	38.2°C
Next-nearest location	Toronto (Island), 9.3 km

Compared with other towns

How Thorncliffe Park compares

Against the 2,611 Canadian towns and neighbourhoods of 2,500 or more, each read from its own normals location; the dots are the other locations those towns use in Ontario.

July afternoons27.0°C

Thorncliffe ParkMedian Canadian town

20°C22°C24°C26°C28°C30°C

Warmer than 86% of Canadian towns

January nights−6.7°C

Thorncliffe ParkMedian Canadian town

−25°C−20°C−15°C−10°C−5°C

Milder than 87% of Canadian towns

Rain and snow a year823 mm

Thorncliffe ParkMedian Canadian town

05001,0001,5002,000

Drier than 58% of Canadian towns

Snowfall a year146 cm

Thorncliffe ParkMedian Canadian town

0100200300400

Snowier than 54% of Canadian towns

Next door

Nearby towns’ climate

Places around Thorncliffe Park whose figures come from another normals location. The nearest places to Thorncliffe Park with figures are 18–29 km away.

Town	July high	January low	Rain & snow
Thorncliffe Park Toronto (City)	27.0°C	−6.7°C	823 mm
Markham 18 km · Toronto Buttonville (Airport)	27.3°C about the same	−10.1°C 3.4°C colder	862 mm
Pickering 24 km · Oshawa	25.7°C 1.3°C cooler	−8.9°C 2.2°C colder	906 mm
Mississauga 29 km · Toronto Pearson (Airport)	27.4°C about the same	−8.9°C 2.2°C colder	807 mm

Month by month

Thorncliffe Park weather by month

Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.

Month	High	Low	Mean	Rain & snow	Snow
January	−0.3°C	−6.7°C	−3.5°C	65 mm	40 cm
February	0.6°C	−6.0°C	−2.7°C	54 mm	34 cm
March	5.1°C	−1.8°C	1.7°C	53 mm	20 cm
April	11.7°C	3.9°C	7.8°C	78 mm	7 cm
May	18.8°C	10.0°C	14.5°C	76 mm	under 1 cm
June	24.2°C	15.3°C	19.8°C	82 mm	0 cm
July	27.0°C	18.1°C	22.5°C	77 mm	0 cm
August	26.1°C	17.7°C	21.9°C	72 mm	0 cm
September	22.0°C	13.8°C	17.9°C	69 mm	0 cm
October	14.6°C	7.7°C	11.2°C	69 mm	1 cm
November	8.1°C	2.3°C	5.2°C	71 mm	12 cm
December	2.6°C	−2.7°C	−0.1°C	58 mm	33 cm
Year	13.4°C	6.0°C	9.7°C	823 mm	146 cm

Year to year

A March here can run from −23.1°C to 25.7°C

Two years in three, January’s average falls within 2.7°C of its normal of −3.5°C; June keeps to within 1.2°C.

−30°

−20°

−10°

0°

10°

20°

30°

40°

50°

JanFebMarAprMayJunJulAugSepOctNovDec

Record low to record high, 1991–2020Normal

Sources

Where Thorncliffe Park’s numbers come from

Averages over 30 years, not a forecast.

Normals: the 1991–2020 Canadian Climate Normals at Toronto (City), the closest ECCC location with twelve months of temperature normals.
Other locations: ECCC blanks a month that fails its completeness rule, so the precipitation or snowfall here comes from the next location with all twelve months.
Comparisons: the 2,500-plus towns and neighbourhoods of Canada, each read from its closest normals location; whole cities and reserves aren’t counted.
Not on this page: sunshine, which none of ECCC’s 450 locations publishes for 1991–2020, and the town’s own height above sea level, so no figure is adjusted for altitude.

Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada

Questions about Thorncliffe Park’s climate

How warm does Thorncliffe Park get in summer?

July is the warmest month, with average highs of 27.0°C.

How cold does Thorncliffe Park get in winter?

Lows sink to −6.7°C on an average January night.

How much rain and snow does Thorncliffe Park get?

Over twelve months, rain and melted snow come to 823 mm; the range runs from 53 mm in March to 82 mm in June.

Are these figures for Thorncliffe Park itself?

Nearly: Toronto (City), the location behind them, sits just beyond Thorncliffe Park’s boundary.

Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Thorncliffe Park →

Adapted from Statistics Canada (Census of Population 2021, population estimates 2025, 2021 census boundaries) under the Statistics Canada Open Licence; this does not constitute an endorsement by Statistics Canada. Neighbourhood names in some cities © OpenStreetMap contributors (ODbL).