Less rain and snow fall on Royal Oak than on 82% of Canadian towns: 445 mm a year
The warmest part of a July day comes in at 23.5°C on average. 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 heating season runs October to May: each of those months averages under 10°C.
Figures: ECCC’s 1991–2020 normals for Calgary (Airport) (15 km east).
A year in Royal Oak at a glance
Each month’s typical high and low, in °C.
What stands out about Royal Oak’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Alberta beside it.
What a year in Royal Oak feels like
Each season’s and each month’s usual high and low, 1991–2020.
Frost on 193 days, 20°C on 87
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
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
139 cm of snow in a typical 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 Royal Oak
85% of a year’s heating need falls between October and April. Months averaging under 10°C: October to May.
Heating degree days total each day’s gap between its mean temperature and 18°C. A house here needs more heating than 68% of Canadian towns.
Living with Royal Oak’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Tender plants are usually safe from around 21 May until frost returns near 18 September: about 119 days.
Warm afternoons without cold nights, 17–27°C and 8°C or more, mark Jul and Aug.
Parks & trails →Winter brings about 42 days with a wind chill below −20.
Humid heat, a humidex over 30, comes on about 9 days a year.
Averages smooth over blizzards, ice storms, floods and heat waves; Royal Oak’s hazards page covers the risks.
Flood & hazards →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 | 15 km 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, 77 km |
How Royal Oak 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
Nearby places read from a different ECCC location (places on Royal Oak’s own would show the same figures). Royal Oak has few close neighbours with figures, so the list reaches 44–66 km out.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Royal Oak Calgary (Airport) | 23.5°C | −13.5°C | 445 mm |
| Stoney 142, 143, 144 44 km · Banff | 22.5°C 1.0°C cooler | −13.5°C about the same | 454 mm |
| Carstairs 46 km · Sundre | 22.8°C 0.7°C cooler | −18.0°C 4.5°C colder | 496 mm |
Royal Oak 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 |
A February here can run warm or cold, its average moving by about 4.1°C; the steadiest month is June
Records from 1991 to 2020: no month spans more than December, between −38.2°C (1996) and 19.5°C (1999).
Where Royal Oak’s numbers come from
Averages over 30 years, not a forecast.
- Normals: 1991–2020 normals for Calgary (Airport) from ECCC’s climate data site, the nearest location with every month of temperature.
- Comparisons: every Canadian town and neighbourhood of 2,500 or more, each read from its own nearest location; city totals and reserves are left out.
- Not on this page: sunshine, not in ECCC’s 1991–2020 normals, and the effect of the town’s height, for which there is no figure.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Royal Oak’s climate
How warm does Royal Oak get in summer?
Summer peaks in July: a typical afternoon reaches 23.5°C.
How cold does Royal Oak get in winter?
The coldest nights come in January, averaging −13.5°C.
How much rain and snow does Royal Oak 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?
About 93 days a year have 1 cm of snow or more on the ground.
Are these figures for Royal Oak itself?
They are the normals for Calgary (Airport), measured just outside Royal Oak itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Royal Oak →
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).