Tecumseh climate by month
What the weather is like
Tecumseh has a hot-summer humid continental climate (Köppen Dfa): warm summers, cold winters and precipitation in every season.
The warmest month is July, when afternoons average 28° and nights 18°. January is the coolest month, with highs of 0° and lows of -8°. The difference between the warmest and the coolest month is about 27°, a large swing typical of continental interiors.
About 971 mm of precipitation falls in an average year. July is the wettest month (95 mm, 17 wet days) and February the driest (60 mm, 11 wet days). Cloud cover ranges from 28% in July to 52% in January.
The sea reaches about 23° in August. Sea temperatures lag the air by a month or two, so late summer is usually warmer for swimming than early summer.
Compared with Ottawa, the capital, Tecumseh is 1.4° warmer on a July afternoon and receives more precipitation over the year.
Year in figures
- Hottest afternoons
- 28° · July
- Coldest nights
- -8° · January
- Wettest month
- July
- Driest month
- February
- Clearest skies
- July · 28% cloud
- Warmest sea
- 23° · August
- Longest day
- 15 h 16 min
- Shortest day
- 9 h 06 min
Twelve months at a glance
Temperature and precipitation
Daily high/low range bars, monthly precipitation columns, sea temperature lineTemperature curve
Average high, low and seaDaylight
Hours between sunrise and sunset on the 15th of each monthClimate normals month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | 0° | 1° | 6° | 14° | 20° | 26° | 28° | 27° | 23° | 16° | 9° | 3° |
| Average low | -8° | -7° | -3° | 3° | 10° | 15° | 18° | 17° | 13° | 7° | 1° | -4° |
| Precipitation | 59 mm | 60 mm | 67 mm | 88 mm | 92 mm | 95 mm | 95 mm | 86 mm | 98 mm | 75 mm | 81 mm | 75 mm |
| Wet days (≥1 mm) | 11.8 | 10.7 | 12.2 | 13.9 | 17.2 | 16 | 17.4 | 15.3 | 12.8 | 14 | 11.7 | 12.3 |
| Cloud cover | 52% | 49% | 45% | 42% | 38% | 32% | 28% | 29% | 31% | 37% | 47% | 52% |
| Sea temperature | 1° | 0° | 1° | 5° | 11° | 18° | 22° | 23° | 20° | 14° | 8° | 4° |
| Daylight | 9h 26 | 10h 35 | 11h 54 | 13h 22 | 14h 35 | 15h 16 | 14h 59 | 13h 55 | 12h 31 | 11h 06 | 9h 48 | 9h 06 |
| Month score | 21 | 25 | 23 | 39 | 64 | 63 | 54 | 59 | 69 | 54 | 23 | 20 |