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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. The area gets 264 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. 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) |
| Sunny Days | 264 days/yr |
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").