St Clair, Australia

Full City Profile

2.3 /5.0

C Fair

19,856 Population 9/sq mi density

161 ft Elevation 49 meters

63°F Avg Temperature 17°C

Overall

2.3 / 5.0

Fair overall score based on economy, affordability, safety and education

C+

Economy

2.9 / 5.0

$28,696 median income, 4.4% unemployment

Affordability

1.8 / 5.0

$247,800 home value, $1,239/mo rent

St Clair 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. The area gets 334 sunny days per year. Annual precipitation totals 31.3 inches. The area receives 0.0 inches of snow annually.

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	161 ft (49 m)
Area	2,265.5 sq mi (5,867.6 km²)
Population Density	9/sq mi
Coordinates	-33.7973°N, 150.7847°W
Timezone	Australia/Sydney

Precipitation & Snow

Annual Rainfall 31.3"

18% below US avg

Snowfall 0.0"

Wettest Month (Jan) 4.25"

Driest Month (Jul) 1.54"

Air Quality

Earthquake History

13 earthquakes (M2.5+) within 150 km since 1990. Strongest: M5.3. Most recent: M3.6 on May 28, 2025.

Aug 6, 1994	9 km WSW of Ellalong, Australia	M5.3	102 km
Apr 22, 2025	18 km SW of Singleton, Australia	M5.1	125 km
Feb 14, 2002	1 km NNW of Yerrinbool, Australia	M3.9	66 km
Mar 17, 1999	2 km SE of Picton, Australia	M3.8	45 km
May 28, 2025	3 km WNW of Cobbitty, Australia	M3.6	26 km
Mar 8, 2024	14 km SSW of Woodford, Australia	M3.5	32 km
Aug 18, 2007	10 km NW of Mittagong, Australia	M3.2	75 km
Sep 10, 2012	33 km ESE of Blue Bay, Australia	M3.2	106 km
Jul 27, 2003	36 km NE of Crookwell, Australia	M3.1	106 km
Apr 11, 2007	3 km SE of Stanwell Park, Australia	M3.1	55 km
Jun 18, 2006	8 km W of Oakdale, Australia	M3.0	45 km
Feb 23, 1990	49 km S of Denman, Australia	M3.0	108 km
Aug 18, 2007	11 km NW of Mittagong, Australia	M2.6	74 km

Source: USGS (M2.5+, 1990–2025)

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	70°F (21°C)	4.3 in	Wettest
February	73°F (23°C)	4.2 in	Warmest
March	70°F (21°C)	4.1 in
April	64°F (18°C)	2.8 in
May	59°F (15°C)	2.6 in
June	53°F (12°C)	2.1 in	Coldest
July	54°F (12°C)	1.5 in	Driest
August	54°F (12°C)	1.9 in
September	59°F (15°C)	1.8 in
October	64°F (18°C)	2.5 in
November	67°F (20°C)	3.2 in
December	72°F (22°C)	2.9 in

St Clair has a seasonal temperature swing of 20°F / from 53°F in June to 73°F in February. Total annual precipitation is 33.8 inches, with January being the wettest month (4.3") and July the driest (1.5").

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