Redstone is drier than 82% of Canadian towns: 445 mm of rain and snow a year
The depth of winter brings overnight lows near −13.5°C. Rain or snow is most frequent in June and least in January. In July, afternoons here are cooler than in 80% of Canadian towns. An umbrella or a shovel earns its place on about 72 days a year with 1 mm or more.
Figures: ECCC’s 1991–2020 normals for Calgary (Airport) (6.6 km south-west).
A year in Redstone at a glance
Each month’s typical high and low, in °C.
What stands out about Redstone’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Alberta beside it.
What a year in Redstone feels like
Each season’s and each month’s usual high and low, 1991–2020.
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.
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
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 Redstone
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 Redstone’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
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 →A wind chill below −20 is part of about 42 days a year here.
Roughly 9 days a year feel hotter than 30 once humidity is counted.
A normal year has no blizzard, flood or heat wave in it; Redstone’s hazards page looks at those.
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 | 6.6 km south-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 | Sundre, 85 km |
How Redstone 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.
Nearby towns’ climate
Places around Redstone whose figures come from another normals location. Distances here run 45–68 km: that is how far the nearest places with figures are from Redstone.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Redstone Calgary (Airport) | 23.5°C | −13.5°C | 445 mm |
| Carstairs 45 km · Sundre | 22.8°C 0.7°C cooler | −18.0°C 4.5°C colder | 496 mm |
| Wheatland County 53 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 |
Redstone 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 |
The month with the widest range: December, −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 Redstone’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: 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: 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 Redstone’s climate
How warm does Redstone get in summer?
July is the warmest month, with average highs of 23.5°C.
How cold does Redstone 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 Redstone 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?
About 93 days a year have 1 cm of snow or more on the ground.
Are these figures for Redstone itself?
Nearly: Calgary (Airport), the location behind them, sits just beyond Redstone’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Redstone →
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).