St Marys South Weather Forecast

Today 22 May
- 12
- 20
Possible shower
Sat 23 May
- 12
- 21
Showers increasing
Sun 24 May
- 13
- 22
Shower or two
Mon 25 May
- 13
- 22
Shower or two
Tue 26 May
- 14
- 21
Showers
Wed 27 May
- 14
- 22
Showers
Thu 28 May
- 14
- 21
Shower or two

Today 22 May
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
8. 10 pm
Sat 23 May
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 24 May
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 25 May
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 26 May
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 27 May
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 28 May
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 22 May Sydney

Partly cloudy. Medium chance of showers. Winds southerly 20 to 30 km/h decreasing to 15 to 20 km/h in the evening.

St Marys South Temperature Statistics View More

May Temperature

Horsley Park (11km)

Lowest 8 May, 2026
4.1 °C
Average 2026
20.2 °C
Highest 10 January, 2026
41.5 °C
Lowest 12 April, 2026
6.9 °C
Average April
17.7 °C
Highest 7 April, 2026
31.1 °C
Lowest 8 May, 2026
4.1 °C
Average May
15.7 °C
Highest 3 May, 2026
25.4 °C

Climate (2021–Present)

Horsley Park (11km)

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Average Low 2021–2026
12.3 °C
Average 2021–2026
17.3 °C
Average High 2021–2026
23.8 °C

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