St Marys South Weather Forecast

Today 12 Sep
- 6
- 25
Sunny
Sun 13 Sep
- 9
- 28
Mostly sunny
Mon 14 Sep
- 10
- 29
Shower or two
Tue 15 Sep
- 11
- 28
Sunny
Wed 16 Sep
- 9
- 19
Partly cloudy
Thu 17 Sep
- 8
- 21
Partly cloudy
Fri 18 Sep
- 7
- 27
Sunny

Today 12 Sep
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
8. 10 pm
Sun 13 Sep
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
8. 10 pm
Mon 14 Sep
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
8. 10 pm
Tue 15 Sep
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
8. 10 pm
Wed 16 Sep
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
8. 10 pm
Thu 17 Sep
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
8. 10 pm
Fri 18 Sep
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
8. 10 pm

Today 12 Sep Sydney

Mostly sunny. Light winds becoming northeasterly 15 to 25 km/h in the early afternoon then becoming light in the evening.

St Marys South Temperature Statistics View More

September Temperature

Horsley Park (11km)

Lowest 25 July, 2026
1.2 °C
Average 2026
17.2 °C
Highest 10 January, 2026
41.5 °C
Lowest 5 August, 2026
1.5 °C
Average August
12.9 °C
Highest 24 August, 2026
24.5 °C
Lowest 9 September, 2026
5.8 °C
Average September
16.1 °C
Highest 5 September, 2026
32.3 °C

Climate (2021–2026)

Horsley Park (11km)

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Average Low 2021–2026
12.5 °C
Average 2021–2026
17.4 °C
Average High 2021–2026
23.8 °C

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