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Weather & Climate in Casterton, Australia
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Casterton enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 66°F in January while summers reach 48°F in July / relatively mild seasonal variation. The area gets 289 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 25.8 inches (drier than the 38-inch national average). The city sits at an elevation of 161 feet.
Temperature
66°F Jan (19°C)
48°F Jul (9°C)
| Annual Average | 57.0°F |
| 6% above US avg | |
| January Average | 66°F (19°C) |
| July Average | 48°F (9°C) |
| Sunny Days | 289 days/yr |
Geography
| Elevation | 161 ft (49 m) |
| Area | 2,594.8 sq mi (6,720.6 km²) |
| Population Density | 1/sq mi |
| Coordinates | -37.5849°N, 141.4030°W |
| Timezone | Australia/Melbourne |
Precipitation & Snow
Air Quality
Earthquake History
4 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.8.
| Jun 1, 2011 | 45 km NE of Hamilton, Australia | M3.8 | 91 km | 2 km |
| Jan 5, 2002 | 44 km S of Moorak, Australia | M3.6 | 98 km | 10 km |
| Feb 6, 1999 | 44 km S of Moorak, Australia | M3.6 | 100 km | 10 km |
| Apr 19, 2006 | 50 km SW of Millicent, Australia | M2.8 | 137 km | 22 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Nearby Volcanoes
1 volcano within 200 km. Closest: Newer Volcanics Province (99 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Newer Volcanics Province | Shield(s) | 1,011 m (3,317 ft) | -2900 | 99 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 66°F (19°C) | 1.1 in | |
| February | 67°F (20°C) | 0.8 in | Warmest, Driest |
| March | 64°F (18°C) | 1.4 in | |
| April | 58°F (15°C) | 1.9 in | |
| May | 54°F (12°C) | 2.4 in | |
| June | 49°F (10°C) | 2.8 in | |
| July | 48°F (9°C) | 3.3 in | Coldest |
| August | 50°F (10°C) | 3.4 in | Wettest |
| September | 52°F (11°C) | 3.0 in | |
| October | 55°F (13°C) | 2.4 in | |
| November | 59°F (15°C) | 1.9 in | |
| December | 63°F (17°C) | 1.5 in |
Casterton has a seasonal temperature swing of 19°F / from 48°F in July to 67°F in February. Total annual precipitation is 25.8 inches, with August being the wettest month (3.4") and February the driest (0.8").