Weather & Climate in Leeds and the Thousand Islands, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Leeds and the Thousand Islands has a cool climate with an average annual temperature of 44°F (7°C). Winters average 16°F in January while summers reach 69°F in July. Annual precipitation totals 38.4 inches. The area receives 11.0 inches of snow annually. The city sits at an elevation of 358 feet.
Temperature
16°F Jan (-9°C)
69°F Jul (21°C)
| Annual Average | 44.0°F |
| 19% below US avg | |
| January Average | 16°F (-9°C) |
| July Average | 69°F (21°C) |
Geography
| Elevation | 358 ft (109 m) |
| Area | 234.8 sq mi (608.1 km²) |
| Population Density | 42/sq mi |
| Coordinates | 44.4601°N, 76.0710°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
49 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.1.
| May 17, 2013 | 20 km NNE of Shawville, Canada | M5.1 | 146 km | 13 km |
| Apr 18, 1998 | 4 km N of Plantagenet, Canada | M4.1 | 150 km | 18 km |
| Feb 25, 2006 | 4 km NE of Thurso, Canada | M4.0 | 147 km | 11 km |
| Sep 18, 2011 | 1 km E of Thurso, Canada | M3.8 | 143 km | 5 km |
| Apr 8, 2003 | 17 km ESE of Saint Regis Falls, New York | M3.7 | 138 km | 10 km |
| May 17, 2013 | 20 km NNE of Shawville, Canada | M3.6 | 146 km | 11 km |
| Apr 23, 2023 | New York | M3.6 | 67 km | 9 km |
| May 28, 2002 | 11 km WNW of Shawville, Canada | M3.4 | 137 km | 18 km |
| Jun 29, 2024 | 14 km W of Ellisburg, New York | M3.3 | 84 km | 5 km |
| Jun 11, 2008 | 6 km NNE of Buckingham, Canada | M3.3 | 142 km | 18 km |
| Jul 31, 1997 | 0 km WSW of Lyons Falls, New York | M3.2 | 109 km | 5 km |
| Aug 24, 2011 | 13 km ENE of Saint Regis Falls, New York | M3.2 | 137 km | 5 km |
| Sep 9, 2015 | 20 km NNE of Shawville, Canada | M3.2 | 147 km | 10 km |
| May 17, 2013 | 21 km NNE of Shawville, Canada | M3.1 | 147 km | 18 km |
| Jun 30, 2013 | 19 km NNE of Shawville, Canada | M3.1 | 145 km | 14 km |
| Feb 24, 2002 | 7 km WSW of Casselman, Canada | M3.1 | 116 km | 18 km |
| May 8, 2009 | 9 km E of Constance Bay, Canada | M3.1 | 115 km | 21 km |
| Oct 13, 1997 | 18 km NW of Cranberry Lake, New York | M3.0 | 88 km | 4 km |
| Mar 2, 1995 | 3 km ENE of Tupper Lake, New York | M3.0 | 133 km | 4 km |
| Nov 7, 2002 | 13 km SSW of Belleville, Canada | M3.0 | 117 km | 18 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 16°F (-9°C) | 2.9 in | Coldest |
| February | 19°F (-8°C) | 2.6 in | |
| March | 29°F (-2°C) | 2.4 in | Driest |
| April | 42°F (6°C) | 3.1 in | |
| May | 54°F (12°C) | 3.2 in | |
| June | 63°F (17°C) | 3.2 in | |
| July | 69°F (21°C) | 3.0 in | Warmest |
| August | 67°F (20°C) | 3.6 in | |
| September | 59°F (15°C) | 4.1 in | Wettest |
| October | 48°F (9°C) | 3.5 in | |
| November | 37°F (3°C) | 3.8 in | |
| December | 24°F (-4°C) | 3.1 in |
Leeds and the Thousand Islands has a seasonal temperature swing of 53°F / from 16°F in January to 69°F in July. Total annual precipitation is 38.3 inches, with September being the wettest month (4.1") and March the driest (2.4").