Castleridge is drier than 82% of Canadian towns: 445 mm of rain and snow a year
Midwinter brings lows of about −13.5°C. June is the wettest month here, with about 11 times the rain and snow of January. In July, afternoons here are cooler than in 80% of Canadian towns. The furnace earns its keep from October to May, the months that average under 10°C.
1991–2020 normals from ECCC’s Calgary (Airport) location, 3.9 km north-west.
A year in Castleridge at a glance
Each month’s typical high and low, in °C.
What stands out about Castleridge’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Alberta beside it.
What a year in Castleridge feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
About 193 frosts and 87 warm days a year
Frost comes from September to May; in December almost every night freezes. Some 22 nights a year drop under −20°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
445 mm of precipitation in a typical year
Some 72 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Snowfall: about 139 cm in a normal year
The snow season runs September to May; March brings the most, about 24 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Castleridge
85% of a year’s heating need falls between October and April. Months averaging under 10°C: October to May.
Behind the figure: the degrees each day’s mean falls under 18°C, summed for the year. Over a year, a home here needs more heating than 68% of Canadian towns.
Living with Castleridge’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
From about 21 May to 18 September the garden is usually clear of frost, some 119 days.
Afternoons of 17–27°C and nights of at least 8°C arrive in Jul and Aug.
Parks & trails →Plan for about 42 days a year with a wind chill below −20.
On some 9 days a year the humidex climbs past 30.
What averages leave out, the floods and ice storms, is on Castleridge’s hazards page.
Flood & hazards →ECCC’s normals location: Calgary (Airport)
ECCC builds the Calgary (Airport) normals from 2 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 3.9 km north-west |
| 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, 88 km |
How Castleridge compares
Placed among 2,611 Canadian towns and neighbourhoods of 2,500+, each on its nearest normals location; each dot is another location used in Alberta.
Nearby towns’ climate
Places around Castleridge whose figures come from another normals location. The nearest places to Castleridge with figures are 51–68 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Castleridge Calgary (Airport) | 23.5°C | −13.5°C | 445 mm |
| Carstairs 51 km · Sundre | 22.8°C 0.7°C cooler | −18.0°C 4.5°C colder | 496 mm |
| Wheatland County 52 km · Queenstown | 25.0°C 1.5°C warmer | −13.7°C about the same | 412 mm |
| Stoney 142, 143, 144 63 km · Banff | 22.5°C 1.0°C cooler | −13.5°C about the same | 454 mm |
Castleridge weather by month
Average daily high and low, mean temperature, rain and snow (as water) and snowfall by month, 1991–2020.
| 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 |
In December, anything from −38.2°C to 19.5°C
Two years in three, February’s average falls within 4.1°C of its normal of −5.9°C; June keeps to within 1.1°C.
Where Castleridge’s numbers come from
Averages over 30 years, not a forecast.
- Normals: Environment and Climate Change Canada’s 1991–2020 normals, Calgary (Airport): the nearest of its locations with every month’s temperatures.
- 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, absent from every 1991–2020 location, and an altitude correction, for want of the town’s own elevation.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Castleridge’s climate
How warm does Castleridge get in summer?
The year’s warmest days come in July, with highs averaging 23.5°C.
How cold does Castleridge get in winter?
At its coldest, in January, the normal low is −13.5°C.
How much rain and snow does Castleridge get?
Rain and snow, with snow counted as water, total 445 mm a year; June leads with 113 mm and January trails with 10 mm.
How long does snow stay on the ground?
There is 1 cm of snow or more on the ground on roughly 93 days a year.
Are these figures for Castleridge itself?
Close to it: they are ECCC’s 1991–2020 normals for Calgary (Airport), just outside Castleridge’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Castleridge →
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).