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Weather & Climate in Port Rowan, ON
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Port Rowan experiences four distinct seasons with an average annual temperature of 47°F (9°C). Winters average 24°F in January while summers reach 70°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 38.5 inches. The area receives 11.5 inches of snow annually. The city sits at an elevation of 607 feet.
Temperature
24°F Jan (-4°C)
70°F Jul (21°C)
| Annual Average | 47.4°F |
| 12% below US avg | |
| January Average | 24°F (-4°C) |
| July Average | 70°F (21°C) |
| Sunny Days | 266 days/yr |
Geography
| Elevation | 607 ft (185 m) |
| Area | 616.9 sq mi (1,597.7 km²) |
| Population Density | 2/sq mi |
| Coordinates | 42.6168°N, 80.4664°W |
| Timezone | America/Toronto |
Precipitation & Snow
Air Quality
Earthquake History
36 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.5.
| Sep 25, 1998 | 2 km SW of Adamsville, Pennsylvania | M4.5 | 125 km | 5 km |
| Jun 10, 2019 | 1 km NW of Timberlake, Ohio | M4.0 | 132 km | 2 km |
| Jan 26, 2001 | 8 km NNW of Edgewood, Ohio | M3.9 | 80 km | 5 km |
| Feb 6, 2023 | 1 km NE of West Seneca, New York | M3.8 | 140 km | 6 km |
| Aug 28, 2023 | 7 km SE of Madison, Ohio | M3.6 | 107 km | 5 km |
| Oct 16, 1993 | 8 km SSE of Madison, Ohio | M3.6 | 112 km | 5 km |
| Jun 30, 2003 | 6 km NW of Perry, Ohio | M3.6 | 109 km | 5 km |
| Mar 15, 1992 | 15 km NW of North Perry, Ohio | M3.5 | 101 km | 5 km |
| Jun 20, 2006 | 9 km WNW of North Perry, Ohio | M3.5 | 107 km | 5 km |
| Jan 26, 1991 | 1 km NNE of Mayfield Heights, Ohio | M3.4 | 145 km | 5 km |
| Jun 3, 2001 | 3 km N of Edgewood, Ohio | M3.4 | 83 km | 5 km |
| Jun 30, 2004 | 2 km WNW of Madison, Ohio | M3.3 | 106 km | 5 km |
| Jul 1, 2013 | 5 km NNW of Fairport Harbor, Ohio | M3.2 | 114 km | 5 km |
| Jan 9, 2008 | 6 km WNW of Mentor-on-the-Lake, Ohio | M3.1 | 128 km | 5 km |
| Mar 11, 2006 | 8 km NNW of Mentor-on-the-Lake, Ohio | M3.1 | 120 km | 5 km |
| May 25, 1995 | 3 km NW of Amherst, New York | M3.0 | 140 km | 5 km |
| Apr 25, 2010 | 2 km WNW of Madison, Ohio | M3.0 | 106 km | 5 km |
| Jun 16, 2004 | 11 km NNW of Angola on the Lake, New York | M2.9 | 115 km | 6 km |
| Feb 23, 1995 | 3 km W of Ashtabula, Ohio | M2.9 | 88 km | 5 km |
| Jan 4, 2022 | 3 km NW of Timberlake, Ohio | M2.8 | 132 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 2.7 m (9 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1823 | LAKE ERIE | Unknown | 2.7 m | - | 57 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-4°C) | 2.6 in | Coldest |
| February | 25°F (-4°C) | 2.2 in | Driest |
| March | 33°F (0°C) | 3.1 in | |
| April | 44°F (6°C) | 3.4 in | |
| May | 55°F (13°C) | 3.0 in | |
| June | 65°F (18°C) | 3.5 in | |
| July | 70°F (21°C) | 3.1 in | Warmest |
| August | 69°F (21°C) | 3.4 in | |
| September | 62°F (17°C) | 3.7 in | Wettest |
| October | 51°F (11°C) | 3.2 in | |
| November | 41°F (5°C) | 3.7 in | |
| December | 31°F (-1°C) | 3.7 in |
Port Rowan has a seasonal temperature swing of 45°F / from 24°F in January to 70°F in July. Total annual precipitation is 38.5 inches, with September being the wettest month (3.7") and February the driest (2.2").