Photo: P199 · CC BY-SA 3.0Tecumseh sits near the top of Canadian towns for July heat
The depth of winter brings overnight lows near −6.3°C. None of the 871 towns of 2,500+ in Ontario has milder January nights. Precipitation peaks in May and eases off in February. Wet days, with 1 mm of rain or snow or more, come about 109 times a year.
ECCC publishes no normals for Tecumseh itself; the figures are those of Windsor Riverside, 4.7 km north-west.
A year in Tecumseh at a glance
Each month’s typical high and low, in °C.
What stands out about Tecumseh’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Tecumseh feels like
Each season’s and each month’s usual high and low, 1991–2020.
Frost on 113 days, 20°C on 148
The frost season runs October to April, peaking in January at about 27 nights. About 33 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
935 mm of precipitation in a typical year
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Snowfall: about 107 cm in a normal year
Snow falls from November to April, most of all in January (about 33 cm).
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Tecumseh
95% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.
A day averaging 10 degrees under 18°C adds 10 to the total; warm days add nothing. A house here needs less heating than 93% of Canadian towns.
Living with Tecumseh’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
About 186 days a year pass without frost, from an average last frost of 24 April to a first of 27 October.
For long days outdoors, May, Jun and Sep bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →What averages leave out, the floods and ice storms, is on Tecumseh’s hazards page.
Flood & hazards →ECCC’s normals location: Windsor Riverside
Every temperature, frost, snow and degree-day figure on this page is the 1991–2020 normal ECCC publishes for Windsor Riverside.
| Distance from the town | 4.7 km north-west |
| Station altitude | 188 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −28.0°C |
| Hottest reading, 1991–2020 | 39.0°C |
| Next-nearest location | Windsor, 7.2 km |
How Tecumseh 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 Tecumseh’s would only repeat its figures.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Tecumseh Windsor Riverside | 29.2°C | −6.3°C | 935 mm |
| East Riverside 3.5 km · Windsor Riverside | 29.2°C about the same | −6.3°C about the same | 935 mm |
| Fontainebleau 6.8 km · Windsor | 28.3°C 0.9°C cooler | −7.1°C 0.8°C colder | 954 mm |
Tecumseh 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 | 0.5°C | −6.3°C | −2.9°C | 70 mm | 33 cm |
| February | 2.3°C | −5.6°C | −1.6°C | 62 mm | 26 cm |
| March | 7.8°C | −1.6°C | 3.1°C | 65 mm | 16 cm |
| April | 14.8°C | 4.0°C | 9.4°C | 88 mm | 5 cm |
| May | 21.5°C | 10.1°C | 15.8°C | 94 mm | under 1 cm |
| June | 27.0°C | 16.0°C | 21.5°C | 80 mm | 0 cm |
| July | 29.2°C | 18.4°C | 23.8°C | 87 mm | 0 cm |
| August | 28.0°C | 17.8°C | 22.9°C | 91 mm | 0 cm |
| September | 24.3°C | 13.9°C | 19.1°C | 94 mm | 0 cm |
| October | 17.0°C | 7.7°C | 12.4°C | 69 mm | 0 cm |
| November | 9.5°C | 1.9°C | 5.7°C | 71 mm | 5 cm |
| December | 3.2°C | −2.9°C | 0.2°C | 65 mm | 21 cm |
| Year | 15.4°C | 6.1°C | 10.8°C | 935 mm | 107 cm |
In March, anything from −20.0°C to 28.5°C
Two years in three, February’s average falls within 2.8°C of its normal of −1.6°C; June keeps to within 0.9°C.
Where Tecumseh’s numbers come from
Averages over 30 years, not a forecast.
- Normals: Environment and Climate Change Canada’s 1991–2020 normals, Windsor Riverside: the nearest of its locations with every month’s temperatures.
- 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 Tecumseh’s climate
How warm does Tecumseh get in summer?
Highs reach 29.2°C on an average July day; no month is warmer.
How cold does Tecumseh get in winter?
January nights average −6.3°C, the coldest of the year.
How much rain and snow does Tecumseh get?
A normal year brings 935 mm, snow included as water: May is wettest at 94 mm, February driest at 62 mm.
How long does snow stay on the ground?
Expect snow on the ground, at least 1 cm, for about 54 days a year.
Are these figures for Tecumseh itself?
They are the closest available: the normals for Windsor Riverside, since Tecumseh has none.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Tecumseh →
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).