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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. The area gets 266 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 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) |
| Sunny Days | 266 days/yr |
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").