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Tecumseh, Ontario climate
Cfa Humid subtropical
Tecumseh has a strongly seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is July with an average daily high near 85°F, while the coldest is January averaging around 21°F at night. Precipitation is fairly even year-round, totalling about 37 inches. Winters bring significant snowfall (42 inches of snow per year on average).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation split into rain and snow · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Tecumseh climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 33 | 36 | 46 | 59 | 71 | 81 | 85 | 82 | 76 | 63 | 49 | 38 |
| Avg temp (°F) | 27 | 29 | 38 | 49 | 60 | 71 | 75 | 73 | 66 | 54 | 42 | 32 |
| Avg low (°F) | 21 | 22 | 29 | 39 | 50 | 61 | 65 | 64 | 57 | 46 | 35 | 27 |
| Precipitation (in) | 2.8 | 2.4 | 2.7 | 3.4 | 3.7 | 3.2 | 3.4 | 3.7 | 3.7 | 2.7 | 2.8 | 2.5 |
| Snowfall (in) | 13.0 | 10.4 | 6.3 | 1.7 | 0.1 | — | — | — | — | — | 2.0 | 8.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 33 | 36 | 46 | 59 | 71 | 81 |
| Avg temp (°F) | 27 | 29 | 38 | 49 | 60 | 71 |
| Avg low (°F) | 21 | 22 | 29 | 39 | 50 | 61 |
| Precipitation (in) | 2.8 | 2.4 | 2.7 | 3.4 | 3.7 | 3.2 |
| Snowfall (in) | 13.0 | 10.4 | 6.3 | 1.7 | 0.1 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 85 | 82 | 76 | 63 | 49 | 38 |
| Avg temp (°F) | 75 | 73 | 66 | 54 | 42 | 32 |
| Avg low (°F) | 65 | 64 | 57 | 46 | 35 | 27 |
| Precipitation (in) | 3.4 | 3.7 | 3.7 | 2.7 | 2.8 | 2.5 |
| Snowfall (in) | — | — | — | — | 2.0 | 8.4 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 73 | 72 | 72 | 68 | 67 | 61 | 53 | 55 | 54 | 64 | 71 | 75 |
| Relative humidity (%) | 88 | 85 | 79 | 75 | 75 | 76 | 74 | 74 | 74 | 77 | 82 | 86 |
| Wind speed (mph) | 9.7 | 9.4 | 8.9 | 8.6 | 7.2 | 6.1 | 5.6 | 5.5 | 6.3 | 7.7 | 8.5 | 8.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 73 | 72 | 72 | 68 | 67 | 61 |
| Relative humidity (%) | 88 | 85 | 79 | 75 | 75 | 76 |
| Wind speed (mph) | 9.7 | 9.4 | 8.9 | 8.6 | 7.2 | 6.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 53 | 55 | 54 | 64 | 71 | 75 |
| Relative humidity (%) | 74 | 74 | 74 | 77 | 82 | 86 |
| Wind speed (mph) | 5.6 | 5.5 | 6.3 | 7.7 | 8.5 | 8.8 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 27 years of daily observations at Windsor Riverside, a weather station, about 4 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.