St Marys Weather Forecast

Today 9 May
- 7
- 22
Sunny
Sun 10 May
- 7
- 23
Mostly sunny
Mon 11 May
- 12
- 23
Shower or two
Tue 12 May
- 13
- 22
Showers
Wed 13 May
- 13
- 21
Showers
Thu 14 May
- 13
- 21
Showers
Fri 15 May
- 12
- 23
Shower or two

Today 9 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 10 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 11 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 12 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 13 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 14 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
Fri 15 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 9 May Sydney

Sunny. Winds south to southeasterly 15 to 20 km/h becoming light in the evening.

St Marys Temperature Statistics View More

May Temperature

Penrith Lakes (10km)

Lowest 8 May, 2026
4.5 °C
Average 2026
21.2 °C
Highest 9 January, 2026
42.5 °C
Lowest 19 April, 2026
7.4 °C
Average April
17.8 °C
Highest 7 April, 2026
32.6 °C
Lowest 8 May, 2026
4.5 °C
Average May
15.7 °C
Highest 3 May, 2026
27.1 °C

Climate (2021–Present)

Penrith Lakes (10km)

Take a look at our website widgetsAvailable free! Find Out More

Average Low 2021–2026
12.5 °C
Average 2021–2026
17.8 °C
Average High 2021–2026
24.9 °C

Get WillyWeather+ to remove ads