Photo: Robert Taylor from Stirling, ON, Canada · CC BY 2.0The climate in Stirling sits close to the middle of Canadian towns
A typical January night drops to −11.2°C and a July afternoon reaches 26.5°C; 941 mm of rain and snow falls in a year. Precipitation peaks in September and eases off in February. Frosty nights are scarcer than in 68% of Canadian towns. Frost comes on about 146 days a year, so leave time to clear the car.
Stirling has no ECCC normals station of its own: every figure here comes from Trenton, 22 km south.
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 Ontario beside it.
What a year in Stirling feels like
Each season’s and each month’s usual high and low, 1991–2020.
About 146 frosts and 124 warm days a year
The frost season runs October to May, and January freezes nearly every night. Some 9 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
941 mm of precipitation in a typical year
Some 116 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 155 cm of snow a year
From November to April snow is likely; January is the peak, at about 44 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Stirling
92% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Warm days count for nothing; each colder day adds how far its mean sits below 18°C. A house here needs less heating than 70% of Canadian towns.
Living with Stirling’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
Gardens get from about 1 May to 10 October without frost, around 161 days in all.
Warm afternoons without cold nights, 17–27°C and 8°C or more, mark Jun, Jul, Aug and Sep.
Parks & trails →Plan for about 28 days a year with a wind chill below −20.
Humid summer days, the humidex above 30, number about 51 a year.
Storms, floods and heat waves sit outside these normals; Stirling’s hazards page covers them.
Flood & hazards →ECCC’s normals location: Trenton
Trenton is one of the 450 places where ECCC publishes 1991–2020 normals.
| Distance from the town | 22 km south |
| Station altitude | 86 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | Yes |
| Coldest reading, 1991–2020 | −35.1°C |
| Hottest reading, 1991–2020 | 35.6°C |
| Average wind | 12.7 km/h on average, most often from the south-west |
| Next-nearest location | Centreville, 55 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 Ontario.
Nearby towns’ climate
The nearest places on a normals location of their own: those that share Stirling’s would only repeat its figures. The nearest places to Stirling with figures are 27–39 km away.
Stirling weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −1.6°C | −11.2°C | −6.4°C | 78 mm | 44 cm |
| February | −0.7°C | −10.6°C | −5.7°C | 60 mm | 39 cm |
| March | 4.4°C | −5.5°C | −0.6°C | 64 mm | 22 cm |
| April | 11.6°C | 0.9°C | 6.3°C | 84 mm | 6 cm |
| May | 18.9°C | 7.3°C | 13.1°C | 81 mm | 0 cm |
| June | 23.9°C | 12.7°C | 18.3°C | 83 mm | 0 cm |
| July | 26.5°C | 15.4°C | 21.0°C | 75 mm | 0 cm |
| August | 25.6°C | 14.4°C | 20.0°C | 70 mm | 0 cm |
| September | 21.6°C | 10.1°C | 15.8°C | 92 mm | 0 cm |
| October | 14.2°C | 4.2°C | 9.2°C | 91 mm | 1 cm |
| November | 7.4°C | −1.5°C | 3.0°C | 84 mm | 10 cm |
| December | 1.4°C | −6.9°C | −2.8°C | 77 mm | 33 cm |
| Year | 12.8°C | 2.4°C | 7.6°C | 941 mm | 155 cm |
January varies most from one year to the next (3.0°C), June least
Over 1991–2020, March saw both −25.6°C (2003) and 25.4°C (1998), the widest span of any month.
Where Stirling’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 normals from ECCC for Trenton, its nearest location with complete temperatures.
- 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, which none of ECCC’s 450 locations publishes for 1991–2020, and the town’s own height above sea level, so no figure is adjusted for altitude.
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?
Afternoons average 26.5°C in July, the warmest time of year.
How cold does Stirling get in winter?
Winter bottoms out in January, with lows near −11.2°C.
How much rain and snow does Stirling get?
Count on roughly 941 mm a year, heaviest in September (92 mm) and lightest in February (60 mm).
How long does snow stay on the ground?
Count on about 75 days of snow cover a year, 1 cm or deeper.
Are these figures for Stirling itself?
They describe Trenton, the nearest normals location, rather than Stirling itself.
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).