Winston Heights/Mountview is drier than 82% of Canadian towns: 445 mm of rain and snow a year
Midsummer highs settle at about 23.5°C. The year is lopsided: June gets about 11 times what January does. Summers stay cool: July afternoons here are cooler than in 80% of Canadian towns. Wet days, with 1 mm of rain or snow or more, come about 72 times a year.
Figures: ECCC’s 1991–2020 normals for Calgary (Airport) (5.8 km north-east).
A year in Winston Heights/Mountview at a glance
Each month’s typical high and low, in °C.
What stands out about Winston Heights/Mountview’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Alberta beside it.
What a year in Winston Heights/Mountview feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
193 frost days and 87 days above 20°C a year
Frost comes from September to May; in December almost every night freezes. Deep cold, under −20°C, comes on about 22 nights a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
Rain and melted snow: about 445 mm a year
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Snowfall: about 139 cm in a normal year
Expect snow from September to May, with about 24 cm in March, the snowiest month.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Winston Heights/Mountview
85% of a year’s heating need falls between October and April. Months averaging under 10°C: October to May.
Each day the mean sits under 18°C adds its shortfall; a year’s total is its heating degree days. That means homes here need more heating than 68% of Canadian towns.
Living with Winston Heights/Mountview’s climate
What the normals mean for a garden, a day outside and the depth of winter.
About 119 days a year pass without frost, from an average last frost of 21 May to a first of 18 September.
Highs of 17–27°C with nights of 8°C or more come in Jul and Aug.
Parks & trails →On some 42 days a year the wind chill drops past −20; mitts and a scarf earn their place.
The humidex tops 30 on about 9 days a year: muggy days to plan around.
Extremes don’t show in averages: floods, wildfire smoke and ice storms are on Winston Heights/Mountview’s hazards page.
Flood & hazards →ECCC’s normals location: Calgary (Airport)
Behind the 1991–2020 normals for Calgary (Airport) are 2 stations, which ECCC combines into one record.
| Distance from the town | 5.8 km north-east |
| 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 | Sundre, 90 km |
How Winston Heights/Mountview compares
Compared with 2,611 towns and neighbourhoods of 2,500 or more across Canada; the dots mark the other normals locations in Alberta.
Nearby towns’ climate
Places around Winston Heights/Mountview whose figures come from another normals location. Winston Heights/Mountview has few close neighbours with figures, so the list reaches 53–72 km out.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Winston Heights/Mountview Calgary (Airport) | 23.5°C | −13.5°C | 445 mm |
| Carstairs 53 km · Sundre | 22.8°C 0.7°C cooler | −18.0°C 4.5°C colder | 496 mm |
| Stoney 142, 143, 144 57 km · Banff | 22.5°C 1.0°C cooler | −13.5°C about the same | 454 mm |
| Wheatland County 58 km · Queenstown | 25.0°C 1.5°C warmer | −13.7°C about the same | 412 mm |
Winston Heights/Mountview weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and 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 |
The month with the widest range: December, −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.
Where Winston Heights/Mountview’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 Canadian Climate Normals at Calgary (Airport), the closest ECCC location with twelve months of temperature normals.
- Comparisons: all Canadian places of 2,500 or more except city totals and reserves, each read the same way.
- 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 Winston Heights/Mountview’s climate
How warm does Winston Heights/Mountview get in summer?
Expect highs near 23.5°C in July, the hottest month on average.
How cold does Winston Heights/Mountview get in winter?
On a normal January night the air drops to −13.5°C, the coldest of the year.
How much rain and snow does Winston Heights/Mountview get?
445 mm a year counting snow as water. The wettest month is June (113 mm); the driest, January (10 mm).
How long does snow stay on the ground?
In a normal winter there are about 93 days with at least 1 cm of snow lying.
Are these figures for Winston Heights/Mountview itself?
Close to it: they are ECCC’s 1991–2020 normals for Calgary (Airport), just outside Winston Heights/Mountview’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Winston Heights/Mountview →
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).