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Weather & Climate in Napanee, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Napanee experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 27°F in January while summers reach 71°F in July. The area gets 243 sunny days per year, above the national average. Annual precipitation totals 41.1 inches. The area receives 45.7 inches of snow annually, making winter weather a significant factor for residents. The city sits at an elevation of 312 feet.
Temperature
27°F Jan (-3°C)
71°F Jul (22°C)
| Annual Average | 48.5°F |
| 10% below US avg | |
| January Average | 27°F (-3°C) |
| July Average | 71°F (22°C) |
| Sunny Days | 243 days/yr |
Geography
| Elevation | 312 ft (95 m) |
| Area | 278.5 sq mi (721.3 km²) |
| Population Density | 27/sq mi |
| Coordinates | 44.2501°N, 76.9494°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
16 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.6.
| Dec 25, 1998 | 23 km SE of Cobourg, Canada | M3.6 | 91 km | 18 km |
| Apr 23, 2023 | New York | M3.6 | 86 km | 9 km |
| Jun 29, 2024 | 14 km W of Ellisburg, New York | M3.3 | 77 km | 5 km |
| Jul 31, 1997 | 0 km WSW of Lyons Falls, New York | M3.2 | 144 km | 5 km |
| Aug 4, 2004 | 30 km SSW of Cobourg, Canada | M3.0 | 121 km | 5 km |
| Nov 7, 2002 | 13 km SSW of Belleville, Canada | M3.0 | 44 km | 18 km |
| Jul 19, 2007 | 27 km S of Cobourg, Canada | M3.0 | 116 km | 5 km |
| Mar 20, 2008 | 12 km S of Osgoode, Canada | M2.8 | 137 km | 6 km |
| Mar 14, 2021 | 19 km SW of Winchester, Canada | M2.7 | 137 km | 10 km |
| Aug 11, 2007 | 4 km N of Kingston, Canada | M2.6 | 38 km | 4 km |
| Mar 29, 2020 | 11 km N of Lyndonville, New York | M2.6 | 146 km | 5 km |
| Apr 14, 2023 | 1 km W of Adams Center, New York | M2.6 | 86 km | 6 km |
| Apr 11, 2007 | 6 km NNE of Sodus Point, New York | M2.6 | 103 km | 7 km |
| May 10, 2022 | southern Ontario, Canada | M2.5 | 133 km | 11 km |
| Mar 17, 2004 | 12 km SSW of Osgoode, Canada | M2.5 | 135 km | 18 km |
| Feb 13, 2014 | 34 km N of Lyndonville, New York | M2.5 | 134 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 27°F (-3°C) | 3.1 in | |
| February | 19°F (-7°C) | 2.4 in | Coldest, Driest |
| March | 30°F (-1°C) | 2.6 in | |
| April | 43°F (6°C) | 3.0 in | |
| May | 55°F (13°C) | 3.2 in | |
| June | 64°F (18°C) | 3.2 in | |
| July | 71°F (22°C) | 2.4 in | Warmest |
| August | 68°F (20°C) | 2.9 in | |
| September | 60°F (15°C) | 3.7 in | |
| October | 48°F (9°C) | 3.4 in | |
| November | 37°F (3°C) | 3.9 in | Wettest |
| December | 25°F (-4°C) | 3.1 in |
Napanee has a seasonal temperature swing of 52°F / from 19°F in February to 71°F in July. Total annual precipitation is 36.7 inches, with November being the wettest month (3.9") and February the driest (2.4").