Climate in Erin Woods · ECCC 1991–2020 normals

Dry weather: only 445 mm of rain and snow a year falls on Erin Woods, less than on 82% of Canadian towns

Midsummer highs settle at about 23.5°C. In July, afternoons here are cooler than in 80% of Canadian towns. Winter and summer sit 37°C apart. Heating does most of its work from October to May, in months below 10°C on average.

July afternoons: cooler than 80% of Canadian towns

January nights: milder than 51% of Canadian towns

Rain and snow a year: drier than 82% of Canadian towns

Environment and Climate Change Canada’s 1991–2020 normals at its Calgary (Airport) station, 12 km north.

July high

23.5°C

Typical Canadian town 25.5°C

January low

−13.5°C

Typical Canadian town −13.5°C

Rain & snow a year

445 mm

Typical Canadian town 883 mm

Snowfall a year

139 cm

Typical Canadian town 141 cm

Frost days

193

a year at 0°C or below

Frost-free days

119

21 May to 18 Sep

A year in Erin Woods at a glance

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

Jan−2°C−14°CColdest nights

Feb0°C−12°C

Mar4°C−8°CSnowiest

Apr11°C−2°C

May16°C3°CLast frost ~21 May

Jun20°C8°CWettest

Jul24°C10°CWarmest

Aug23°C9°C

Sep18°C5°CFirst frost ~18 Sep

Oct11°C−1°C

Nov now4°C−8°C

Dec0°C−12°C

What stands out about Erin Woods’s climate

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

Drier than 82% of Canadian townsAbout 445 mm of rain and melted snow a year; June is the wettest month and January the driest.Cooler than 80% of Canadian townsJuly afternoons average 23.5°C, the warmest of the year.

A normal year

What a year in Erin Woods feels like

Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.

Winter

−1°C / −12°C

34 mm, with 50 cm of snow

Spring

10°C / −2°C

108 mm, with 56 cm of snow

Summer

22°C / 9°C

232 mm of rain and snow, the wettest season

Autumn

11°C / −1°C

71 mm, with 33 cm of snow

−20°

−10°

0°

10°

20°

30°

−2°C−14°C

0°C−12°C

4°C−8°C

11°C−2°C

16°C3°C

20°C8°C

24°C10°C

23°C9°C

18°C5°C

11°C−1°C

4°C−8°C

0°C−12°C

JanFebMarAprMayJunJulAugSepOctNovDec

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

Frost & warm days

Frost on 193 days, 20°C on 87

The frost season runs September to May, and December freezes nearly every night. Deep cold, under −20°C, comes on about 22 nights a year.

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

21 May 18 Sep

JanFebMarAprMayJunJulAugSepOctNovDec

193

Frost days a year (0°C or below)

More frosts than 79% of Canadian towns

Days that stay below 0°C

Nights a year below −20°C

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

Rain and melted snow: about 445 mm a year

The most falls in June, the least in January. About 72 days a year bring 1 mm or more.

445 mm

Rain and snow a year

Drier than 82% of Canadian towns

342 mm

Of it as rain alone (77%)

113 mm

June, the wettest month

10 mm

January, the driest month

Rain and snow by month

Millimetres

113 mm

JFMAMJJASOND

Rain alone by month

Millimetres

113 mm

JFMAMJJASOND

Snow

139 cm of snow in a typical year

The snow season runs September to May; March brings the most, about 24 cm.

139 cm

Snowfall a year

Less snowy than 54% of Canadian towns

Days a year with 0.2 cm of snow or more

Days a year with 1 cm or more on the ground

6 cm

Snow on the ground at the end of December, the deepest month

Snowfall by month

Centimetres

24 cm

JFMAMJJASOND

Snow on the ground by month

Centimetres at month’s end

6 cm

JFMAMJJASOND

Heating

Heating a home in Erin Woods

85% of a year’s heating need falls between October and April. Months averaging under 10°C: October to May.

4,994 heating degree days (below 18°C)a year, 1991–2020

1,448 growing degree days (above 5°C)a year, 1991–2020

A day averaging 10 degrees under 18°C adds 10 to the total; warm days add nothing. In heating terms, homes need more heating than 68% of Canadian towns.

Living here

Living with Erin Woods’s climate

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

The garden window

About 119 days a year pass without frost, from an average last frost of 21 May to a first of 18 September.

Get outside

Mild days and mild nights together (17–27°C by day, 8°C or more at night) belong to Jul and Aug.

Parks & trails →

Wind chill

On some 42 days a year the wind chill drops past −20; mitts and a scarf earn their place.

Humidex

Muggy heat with a humidex over 30 arrives on about 9 days a year.

Storms and extremes

Thirty years of averages say little about one bad storm; Erin Woods’s hazards page does.

Flood & hazards →

Weather station

ECCC’s normals location: Calgary (Airport)

Calgary (Airport) is a composite: ECCC joins 2 stations’ readings to make its 1991–2020 normals.

Distance from the town	12 km north
Station altitude	1,099 m
Completeness	at least 20 years
WMO standard normals	No
Coldest reading, 1991–2020	−39.7°C
Hottest reading, 1991–2020	36.5°C
Average wind	13.8 km/h on average, most often from the south
Next-nearest location	Queenstown, 83 km

Compared with other towns

How Erin Woods 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 Alberta.

July afternoons23.5°C

Erin WoodsMedian Canadian town

20°C22°C24°C26°C28°C

Cooler than 80% of Canadian towns

January nights−13.5°C

Erin WoodsMedian Canadian town

−25°C−20°C−15°C−10°C

Milder than 51% of Canadian towns

Rain and snow a year445 mm

Erin WoodsMedian Canadian town

05001,0001,500

Drier than 82% of Canadian towns

Snowfall a year139 cm

Erin WoodsMedian Canadian town

0100200300

Less snowy than 54% of Canadian towns

Next door

Nearby towns’ climate

The nearest places on a normals location of their own: those that share Erin Woods’s would only repeat its figures. No closer places have figures: these lie 51–72 km from Erin Woods.

Town	July high	January low	Rain & snow
Erin Woods Calgary (Airport)	23.5°C	−13.5°C	445 mm
Wheatland County 51 km · Queenstown	25.0°C 1.5°C warmer	−13.7°C about the same	412 mm
Carstairs 60 km · Sundre	22.8°C 0.7°C cooler	−18.0°C 4.5°C colder	496 mm
Stoney 142, 143, 144 64 km · Banff	22.5°C 1.0°C cooler	−13.5°C about the same	454 mm

Month by month

Erin Woods weather by month

Month by month, 1991–2020: the usual high, low and mean, the rain and snow, and the snowfall.

Month	High	Low	Mean	Rain & snow	Snow
January	−1.5°C	−13.5°C	−7.6°C	10 mm	17 cm
February	0.1°C	−11.8°C	−5.9°C	12 mm	17 cm
March	3.8°C	−8.1°C	−2.2°C	18 mm	24 cm
April	10.8°C	−1.9°C	4.5°C	30 mm	23 cm
May	16.4°C	3.4°C	9.9°C	61 mm	10 cm
June	19.7°C	7.7°C	13.7°C	113 mm	under 1 cm
July	23.5°C	10.2°C	16.9°C	66 mm	0 cm
August	23.1°C	9.2°C	16.2°C	54 mm	0 cm
September	18.3°C	4.7°C	11.5°C	37 mm	2 cm
October	11.1°C	−1.3°C	4.9°C	17 mm	12 cm
November	4.1°C	−7.5°C	−1.7°C	16 mm	19 cm
December	−0.4°C	−12.1°C	−6.3°C	13 mm	16 cm
Year	10.8°C	−1.8°C	4.5°C	445 mm	139 cm

Year to year

A December here can run from −38.2°C to 19.5°C

February is the least predictable month: about two years in three its average lands within 4.1°C of the normal, −5.9°C. June is the steadiest, within 1.1°C.

−50°

−40°

−30°

−20°

−10°

0°

10°

20°

30°

40°

JanFebMarAprMayJunJulAugSepOctNovDec

Record low to record high, 1991–2020Normal

Sources

Where Erin Woods’s numbers come from

Averages over 30 years, not a forecast.

Normals: ECCC’s normals for Calgary (Airport), 1991–2020, chosen as the nearest location with a full temperature record.
Comparisons: all Canadian places of 2,500 or more except city totals and reserves, each read the same way.
Not on this page: a sunshine figure (ECCC published none for 1991–2020) and any lapse-rate correction for height, as the town has no elevation here.

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

Questions about Erin Woods’s climate

How warm does Erin Woods get in summer?

At its warmest, in July, the normal high is 23.5°C.

How cold does Erin Woods get in winter?

Lows sink to −13.5°C on an average January night.

How much rain and snow does Erin Woods get?

Over twelve months, rain and melted snow come to 445 mm; the range runs from 10 mm in January to 113 mm in June.

How long does snow stay on the ground?

Roughly 93 days a year start with snow cover of 1 cm or more.

Are these figures for Erin Woods itself?

Close to it: they are ECCC’s 1991–2020 normals for Calgary (Airport), just outside Erin Woods’s boundary.

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

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).