Weather & Climate in Joly, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Joly has a cool climate with an average annual temperature of 39°F (4°C). Winters average 11°F in January while summers reach 64°F in July. Annual precipitation totals 39.5 inches. The area receives 14.4 inches of snow annually. The city sits at an elevation of 1,460 feet.
Temperature
11°F Jan (-12°C)
64°F Jul (18°C)
| Annual Average | 39.0°F |
| 28% below US avg | |
| January Average | 11°F (-12°C) |
| July Average | 64°F (18°C) |
Geography
| Elevation | 1,460 ft (445 m) |
| Area | 74.9 sq mi (193.9 km²) |
| Population Density | 4/sq mi |
| Coordinates | 45.7886°N, 79.2479°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
7 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.7.
| Jan 1, 2000 | 17 km NNE of Notre-Dame-du-Lac, Canada | M4.7 | 125 km | 18 km |
| Oct 20, 2013 | 34 km SSW of Petawawa, Canada | M3.6 | 141 km | 18 km |
| Oct 10, 1995 | southern Quebec, Canada | M3.5 | 79 km | 18 km |
| May 14, 2016 | 8 km NW of Petawawa, Canada | M3.5 | 148 km | 18 km |
| May 2, 2015 | 12 km NE of Notre-Dame-du-Lac, Canada | M3.3 | 118 km | 18 km |
| Jul 29, 2012 | 17 km SSW of Parry Sound, Canada | M2.5 | 93 km | 5 km |
| May 17, 2010 | 19 km WNW of Gravenhurst, Canada | M2.5 | 90 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 11°F (-12°C) | 2.9 in | Coldest |
| February | 13°F (-11°C) | 2.2 in | Driest |
| March | 23°F (-5°C) | 2.4 in | |
| April | 37°F (3°C) | 2.6 in | |
| May | 51°F (10°C) | 3.5 in | |
| June | 59°F (15°C) | 3.4 in | |
| July | 64°F (18°C) | 3.6 in | Warmest |
| August | 63°F (17°C) | 3.7 in | |
| September | 55°F (13°C) | 4.4 in | Wettest |
| October | 44°F (6°C) | 4.0 in | |
| November | 31°F (-0°C) | 3.9 in | |
| December | 18°F (-8°C) | 3.1 in |
Joly has a seasonal temperature swing of 54°F / from 11°F in January to 64°F in July. Total annual precipitation is 39.5 inches, with September being the wettest month (4.4") and February the driest (2.2").