Photo: TheWxResearcher · CC0Few Canadian towns have warmer summer afternoons than Windsor
Nights in January average −7.1°C. A year here swings 35°C from midwinter lows to midsummer highs. Only about 115 nights a year bring a frost, fewer than in 86% of Canadian towns. Expect about 115 frosty starts a year, days when the air falls to freezing.
1991–2020 normals from ECCC’s Windsor station, 3.3 km south-east.
A year in Windsor at a glance
Each month’s typical high and low, in °C.
What stands out about Windsor’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Windsor feels like
Each season’s and each month’s usual high and low, 1991–2020.
About 115 frosts and 141 warm days a year
Frost comes from November to April; in January almost every night freezes. Some 24 days a year climb past 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. On about 110 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 140 cm of snow a year
From November to April snow is likely; January is the peak, at about 43 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Windsor
95% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.
Think of it as a year’s worth of daily shortfalls below 18°C, added up. In heating terms, homes need less heating than 93% of Canadian towns.
Living with Windsor’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
Count on about 197 frost-free days: the last frost averages 17 April, the first 1 November.
For long days outdoors, May, Jun, Aug and Sep bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →Roughly 13 days a year feel colder than −20 in the wind.
The humidex tops 30 on about 74 days a year: muggy days to plan around.
Ice storms, floods and heat waves are risks, not averages: they are on Windsor’s hazards page.
Flood & hazards →ECCC’s normals location: Windsor
Behind the 1991–2020 normals for Windsor are 3 stations, which ECCC combines into one record.
| Distance from the town | 3.3 km south-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, 6.4 km |
How Windsor compares
Placed among 2,611 Canadian towns and neighbourhoods of 2,500+, each on its nearest normals location; each dot is another location used in Ontario.
Nearby towns’ climate
Nearby places read from a different ECCC location (places on Windsor’s own would show the same figures). Windsor has few close neighbours with figures, so the list reaches 9–26 km out.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Windsor | 28.3°C | −7.1°C | 954 mm |
| Tecumseh 9.4 km · Windsor Riverside | 29.2°C 0.9°C warmer | −6.3°C 0.8°C milder | 935 mm |
| Amherstburg 22 km · Harrow | 27.6°C 0.7°C cooler | −7.0°C about the same | 827 mm |
Windsor 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 | 0.0°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 |
The most changeable month: January, give or take 2.8°C; the steadiest, June
Records from 1991 to 2020: no month spans more than March, between −22.0°C (2015) and 28.4°C (2012).
Where Windsor’s numbers come from
Averages over 30 years, not a forecast.
- Normals: Environment and Climate Change Canada’s 1991–2020 normals, Windsor: the nearest of its locations with every month’s temperatures.
- Comparisons: the towns and neighbourhoods of 2,500+ across Canada, each on its nearest normals location, without the city totals or the reserves.
- 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 Windsor’s climate
How warm does Windsor get in summer?
A normal July afternoon tops out at about 28.3°C, the year’s high point.
How cold does Windsor get in winter?
Deep winter means January, when nights average −7.1°C.
How much rain and snow does Windsor get?
A normal year brings 954 mm, snow included as water: July is wettest at 99 mm, February driest at 60 mm.
How long does snow stay on the ground?
Count on about 53 days of snow cover a year, 1 cm or deeper.
Are these figures for Windsor itself?
Yes: ECCC’s normals station is inside Windsor itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Windsor →
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).