Devonshire has some of the warmest summer afternoons among Canadian towns
The depth of winter brings overnight lows near −7.1°C. Winter and summer sit 35°C apart. Frosty nights are scarcer than in 86% of Canadian towns. Picnics, hikes and garden evenings suit May, June, August and September, with highs of 21–27°C.
1991–2020 normals from ECCC’s Windsor location, 2.2 km north-east.
A year in Devonshire at a glance
Each month’s typical high and low, in °C.
What stands out about Devonshire’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Devonshire feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
About 115 frosts and 141 warm days a year
From November to April frost is routine, and in January it comes on almost every night. About 24 days a year top 30°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
Rain and melted snow: about 954 mm a year
July brings the most rain and snow; February, the least. About 110 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 140 cm of snow a year
Expect snow from November to April, with about 43 cm in January, the snowiest month.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Devonshire
95% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.
Every day colder than 18°C on average adds its gap in degrees to the year’s heating total. That means homes here need less heating than 93% of Canadian towns.
Living with Devonshire’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
A normal year gives the garden about 197 frost-free days, roughly 17 April to 1 November.
Afternoons of 17–27°C and nights of at least 8°C arrive in May, Jun, Aug and Sep.
Parks & trails →Bitter wind chill, under −20, comes on about 13 days a year.
Count on some 74 humid days a year with the humidex past 30.
A normal year has no blizzard, flood or heat wave in it; Devonshire’s hazards page looks at those.
Flood & hazards →ECCC’s normals location: Windsor
Windsor is a composite: ECCC joins 3 stations’ readings to make its 1991–2020 normals.
| Distance from the town | 2.2 km north-east |
| Station altitude | 190 m |
| Completeness | at least 25 years |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −29.1°C |
| Hottest reading, 1991–2020 | 38.3°C |
| Average wind | 15.6 km/h on average, most often from the south-west |
| Next-nearest location | Windsor Riverside, 8.0 km |
How Devonshire 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
Nearby places read from a different ECCC location (places on Devonshire’s own would show the same figures). The nearest places to Devonshire with figures are 9–23 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Devonshire Windsor | 28.3°C | −7.1°C | 954 mm |
| Tecumseh 9.5 km · Windsor Riverside | 29.2°C 0.9°C warmer | −6.3°C 0.8°C milder | 935 mm |
| Amherstburg 20 km · Harrow | 27.6°C 0.7°C cooler | −7.0°C about the same | 827 mm |
Devonshire weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | 0.0°C | −7.1°C | −3.6°C | 71 mm | 43 cm |
| February | 1.3°C | −6.4°C | −2.6°C | 60 mm | 33 cm |
| March | 6.8°C | −2.1°C | 2.4°C | 71 mm | 23 cm |
| April | 14.0°C | 3.5°C | 8.8°C | 92 mm | 6 cm |
| May | 20.7°C | 9.8°C | 15.3°C | 97 mm | 0 cm |
| June | 26.0°C | 15.5°C | 20.8°C | 83 mm | 0 cm |
| July | 28.3°C | 18.0°C | 23.2°C | 99 mm | 0 cm |
| August | 27.0°C | 17.1°C | 22.1°C | 76 mm | 0 cm |
| September | 23.1°C | 13.0°C | 18.1°C | 88 mm | 0 cm |
| October | 16.1°C | 6.9°C | 11.6°C | 74 mm | under 1 cm |
| November | 8.9°C | 1.4°C | 5.2°C | 73 mm | 5 cm |
| December | 2.7°C | −3.5°C | −0.4°C | 69 mm | 30 cm |
| Year | 14.6°C | 5.5°C | 10.1°C | 954 mm | 140 cm |
March has run from −22.0°C to 28.4°C in thirty years
The month to count on least is January: one year in three its average strays more than 2.8°C from −3.6°C. June moves least, typically by 1.2°C.
Where Devonshire’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 Canadian Climate Normals at Windsor, the closest ECCC location with twelve months of temperature normals.
- Comparisons: every place of 2,500+ in Canada but the city hubs and the reserves, each on its nearest ECCC location.
- 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 Devonshire’s climate
How warm does Devonshire get in summer?
Midsummer means July, with afternoons near 28.3°C on a typical day.
How cold does Devonshire get in winter?
A typical January night falls to −7.1°C, the year’s low point.
How much rain and snow does Devonshire get?
The year adds up to 954 mm. July is the peak month (99 mm) and February the low one (60 mm).
How long does snow stay on the ground?
About 53 days a year count as snow-covered, with 1 cm or more.
Are these figures for Devonshire itself?
Close to it: they are ECCC’s 1991–2020 normals for Windsor, just outside Devonshire’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Devonshire →
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).