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Weather & Climate in Mount Vernon, Australia
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mount Vernon enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winters average 70°F in January while summers reach 54°F in July / relatively mild seasonal variation. The area gets 334 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 31.3 inches. The city sits at an elevation of 272 feet.
Temperature
70°F Jan (21°C)
54°F Jul (12°C)
| Annual Average | 63.1°F |
| 17% above US avg | |
| January Average | 70°F (21°C) |
| July Average | 54°F (12°C) |
| Sunny Days | 334 days/yr |
Geography
| Elevation | 272 ft (83 m) |
| Area | 2,265.5 sq mi (5,867.6 km²) |
| Population Density | 1/sq mi |
| Coordinates | -33.8604°N, 150.8101°W |
| Timezone | Australia/Sydney |
Precipitation & Snow
Air Quality
Earthquake History
13 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.3.
| Aug 6, 1994 | 9 km WSW of Ellalong, Australia | M5.3 | 108 km | 10 km |
| Apr 22, 2025 | 18 km SW of Singleton, Australia | M5.1 | 131 km | 10 km |
| Feb 14, 2002 | 1 km NNW of Yerrinbool, Australia | M3.9 | 61 km | 10 km |
| Mar 17, 1999 | 2 km SE of Picton, Australia | M3.8 | 40 km | 10 km |
| May 28, 2025 | 3 km WNW of Cobbitty, Australia | M3.6 | 22 km | 10 km |
| Mar 8, 2024 | 14 km SSW of Woodford, Australia | M3.5 | 34 km | 9 km |
| Aug 18, 2007 | 10 km NW of Mittagong, Australia | M3.2 | 70 km | 18 km |
| Sep 10, 2012 | 33 km ESE of Blue Bay, Australia | M3.2 | 106 km | 2 km |
| Jul 27, 2003 | 36 km NE of Crookwell, Australia | M3.1 | 106 km | 6 km |
| Apr 11, 2007 | 3 km SE of Stanwell Park, Australia | M3.1 | 47 km | 20 km |
| Jun 18, 2006 | 8 km W of Oakdale, Australia | M3.0 | 43 km | 12 km |
| Feb 23, 1990 | 49 km S of Denman, Australia | M3.0 | 115 km | 10 km |
| Aug 18, 2007 | 11 km NW of Mittagong, Australia | M2.6 | 70 km | 9 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 70°F (21°C) | 4.1 in | |
| February | 72°F (22°C) | 4.1 in | Warmest |
| March | 69°F (20°C) | 4.2 in | Wettest |
| April | 64°F (18°C) | 3.0 in | |
| May | 58°F (15°C) | 2.7 in | |
| June | 53°F (12°C) | 2.2 in | Coldest |
| July | 54°F (12°C) | 1.6 in | Driest |
| August | 54°F (12°C) | 1.9 in | |
| September | 58°F (14°C) | 1.7 in | |
| October | 63°F (17°C) | 2.6 in | |
| November | 66°F (19°C) | 3.2 in | |
| December | 70°F (21°C) | 2.9 in |
Mount Vernon has a seasonal temperature swing of 19°F / from 53°F in June to 72°F in February. Total annual precipitation is 34.3 inches, with March being the wettest month (4.2") and July the driest (1.6").