Weather & Climate in Tehkummah, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Tehkummah has a cool climate with an average annual temperature of 42°F (6°C). Winters average 19°F in January while summers reach 64°F in July. Annual precipitation totals 34.7 inches. The area receives 10.6 inches of snow annually. The city sits at an elevation of 715 feet.
Temperature
19°F Jan (-7°C)
64°F Jul (18°C)
| Annual Average | 42.3°F |
| 22% below US avg | |
| January Average | 19°F (-7°C) |
| July Average | 64°F (18°C) |
Geography
| Elevation | 715 ft (218 m) |
| Area | 50.9 sq mi (131.7 km²) |
| Population Density | 9/sq mi |
| Coordinates | 45.6560°N, 82.0141°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
6 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.9.
| Mar 9, 1998 | Ontario, Canada | M3.9 | 118 km | 1 km |
| Aug 5, 2014 | 6 km NNW of Lively, Canada | M3.8 | 112 km | 5 km |
| Mar 13, 2005 | 5 km N of Greater Sudbury, Canada | M3.6 | 127 km | 18 km |
| May 25, 1998 | 3 km NW of Lively, Canada | M3.4 | 110 km | 1 km |
| Aug 5, 2014 | 5 km NNW of Lively, Canada | M3.3 | 111 km | 12 km |
| Feb 8, 2019 | 7 km SW of Azilda, Canada | M3.1 | 115 km | 2 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 2.7 m (9 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1855 | OWEN SOUND, LAKE HURON | Unknown | 2.7 m | - | 108 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 19°F (-7°C) | 2.9 in | Coldest |
| February | 20°F (-7°C) | 1.9 in | Driest |
| March | 27°F (-3°C) | 2.3 in | |
| April | 39°F (4°C) | 2.6 in | |
| May | 49°F (9°C) | 2.8 in | |
| June | 58°F (14°C) | 2.4 in | |
| July | 64°F (18°C) | 2.1 in | Warmest |
| August | 64°F (18°C) | 2.9 in | |
| September | 58°F (14°C) | 3.6 in | |
| October | 47°F (9°C) | 4.0 in | Wettest |
| November | 37°F (3°C) | 3.5 in | |
| December | 26°F (-4°C) | 3.5 in |
Tehkummah has a seasonal temperature swing of 46°F / from 19°F in January to 64°F in July. Total annual precipitation is 34.6 inches, with October being the wettest month (4.0") and February the driest (1.9").