Less rain and snow fall on Rundle than on 82% of Canadian towns: 445 mm a year
Midwinter brings lows of about −13.5°C. A year here swings 37°C from midwinter lows to midsummer highs. Summers stay cool: July afternoons here are cooler than in 80% of Canadian towns. Windshields need scraping on about 193 mornings a year, the days the air reaches 0°C or below.
Environment and Climate Change Canada’s 1991–2020 normals at its Calgary (Airport) station, 5.6 km north-west.
A year in Rundle at a glance
Each month’s typical high and low, in °C.
What stands out about Rundle’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Alberta beside it.
What a year in Rundle feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
About 193 frosts and 87 warm days a year
The frost season runs September to May, and December freezes nearly every night. 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
About 445 mm of rain and snow a year
June brings the most rain and snow; January, the least. About 72 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Snowfall: about 139 cm in a normal year
Snow falls from September to May, most of all in March (about 24 cm).
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Rundle
85% of a year’s heating need falls between October and April. Months averaging under 10°C: October to May.
The total grows by a degree for every degree a day’s mean sits under 18°C. In heating terms, homes need more heating than 68% of Canadian towns.
Living with Rundle’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
Wait until about 21 May to plant out; frost tends to come back around 18 September, about 119 days later.
Mild days and mild nights together (17–27°C by day, 8°C or more at night) belong to Jul and Aug.
Parks & trails →Expect around 42 days a year when the wind chill sinks below −20.
Roughly 9 days a year feel hotter than 30 once humidity is counted.
Thirty-year normals hide the storms and the extremes: the hazards page has Rundle’s risks.
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 | 5.6 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, 87 km |
How Rundle 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
The nearest places on a normals location of their own: those that share Rundle’s would only repeat its figures. No closer places have figures: these lie 52–67 km from Rundle.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Rundle Calgary (Airport) | 23.5°C | −13.5°C | 445 mm |
| Wheatland County 52 km · Queenstown | 25.0°C 1.5°C warmer | −13.7°C about the same | 412 mm |
| Carstairs 54 km · Sundre | 22.8°C 0.7°C cooler | −18.0°C 4.5°C colder | 496 mm |
| Stoney 142, 143, 144 62 km · Banff | 22.5°C 1.0°C cooler | −13.5°C about the same | 454 mm |
Rundle 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 |
February strays furthest from its normal year to year, by 4.1°C; June the least
The thirty-year records stretch furthest in December: a low of −38.2°C in 1996 and a high of 19.5°C in 1999.
Where Rundle’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: Canadian towns and neighbourhoods of at least 2,500, each placed by its nearest location (city totals and reserves excluded).
- Not on this page: sunshine (no 1991–2020 normals exist for it) and any altitude adjustment, since there is no elevation for the town itself.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Rundle’s climate
How warm does Rundle get in summer?
The warmest month is July, when afternoons average 23.5°C.
How cold does Rundle get in winter?
At its coldest, in January, the normal low is −13.5°C.
How much rain and snow does Rundle 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?
Expect snow on the ground, at least 1 cm, for about 93 days a year.
Are these figures for Rundle itself?
Nearly: Calgary (Airport), the location behind them, sits just beyond Rundle’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Rundle →
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).