Photo: Hero122 · CC BY-SA 3.0Stirling is among the driest of Canadian towns: 373 mm of rain and snow a year
Expect July afternoons of about 26.3°C. June is the wettest month, February the driest. Summer afternoons here are warmer than in 63% of Canadian towns. Frost comes on about 175 days a year, so leave time to clear the car.
No ECCC station in Stirling has 1991–2020 normals; the page reads Lethbridge, 25 km north-west, instead.
A year in Stirling at a glance
Each month’s typical high and low, in °C.
What stands out about Stirling’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Alberta beside it.
What a year in Stirling feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
175 frost days and 112 days above 20°C a year
Frost comes from September to May; in December almost every night freezes. On about 22 nights a year the air falls below −20°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
About 373 mm of rain and snow a year
On about 69 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 108 cm of snow a year
Snow falls from August to May, most of all in March (about 18 cm).
Snowfall by month
Centimetres
Heating a home in Stirling
88% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
The count adds up, day by day, how far the mean temperature falls short of 18°C.
Living with Stirling’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
About 118 days a year pass without frost, from an average last frost of 21 May to a first of 17 September.
Highs of 17–27°C with nights of 8°C or more come in Jun, Jul and Aug.
Parks & trails →A wind chill below −20 is part of about 41 days a year here.
A humidex above 30 marks about 24 days in a normal year.
Thirty years of averages say little about one bad storm; Stirling’s hazards page does.
Flood & hazards →ECCC’s normals location: Lethbridge
ECCC builds the Lethbridge normals from 4 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 25 km north-west |
| Station altitude | 929 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −41.9°C |
| Hottest reading, 1991–2020 | 40.1°C |
| Average wind | 17.1 km/h on average, most often from the west |
| Next-nearest location | Milk River, 54 km |
How Stirling 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
Nearby places read from a different ECCC location (places on Stirling’s own would show the same figures). Stirling has few close neighbours with figures, so the list reaches 34–59 km out.
Stirling 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 | 0.1°C | −12.1°C | −6.0°C | 11 mm | 13 cm |
| February | 1.7°C | −11.0°C | −4.6°C | 10 mm | 15 cm |
| March | 6.4°C | −6.8°C | −0.2°C | 17 mm | 18 cm |
| April | 12.6°C | −1.3°C | 5.7°C | 28 mm | 13 cm |
| May | 18.2°C | 3.9°C | 11.1°C | 57 mm | 5 cm |
| June | 21.8°C | 8.3°C | 15.1°C | 93 mm | 0 cm |
| July | 26.3°C | 10.5°C | 18.4°C | 40 mm | 0 cm |
| August | 26.3°C | 9.4°C | 17.9°C | 33 mm | 1 cm |
| September | 21.0°C | 5.3°C | 13.2°C | 32 mm | 1 cm |
| October | 13.3°C | −0.6°C | 6.4°C | 24 mm | 10 cm |
| November | 5.5°C | −6.6°C | −0.5°C | 16 mm | 16 cm |
| December | 0.7°C | −11.2°C | −5.3°C | 12 mm | 15 cm |
| Year | 12.8°C | −1.0°C | 5.9°C | 373 mm | 108 cm |
The most changeable month: February, give or take 4.8°C; the steadiest, June
Records from 1991 to 2020: no month spans more than March, between −38.0°C (2002) and 26.8°C (2004).
Where Stirling’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 Canadian Climate Normals at Lethbridge, the closest ECCC location with twelve months of temperature normals.
- 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, 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 Stirling’s climate
How warm does Stirling get in summer?
At its warmest, in July, the normal high is 26.3°C.
How cold does Stirling get in winter?
The year’s coldest nights belong to January, at about −12.1°C.
How much rain and snow does Stirling get?
The yearly total is about 373 mm. June gets 93 mm, the most of any month; February gets 10 mm, the least.
Are these figures for Stirling itself?
No, the station behind them is Lethbridge, beyond Stirling’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Stirling →
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).