St Marys Weather Forecast

Today 26 Dec
- 15
- 20
Cloudy
Sat 27 Dec
- 12
- 26
Mostly sunny
Sun 28 Dec
- 13
- 26
Partly cloudy
Mon 29 Dec
- 13
- 28
Mostly sunny
Tue 30 Dec
- 13
- 32
Sunny
Wed 31 Dec
- 16
- 33
Partly cloudy
Thu 1 Jan
- 16
- 28
Partly cloudy

Today 26 Dec
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Sat 27 Dec
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Sun 28 Dec
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Mon 29 Dec
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Tue 30 Dec
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Wed 31 Dec
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Thu 1 Jan
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm

Today 26 Dec Sydney

Cloudy. Slight chance of a shower this morning. Winds southerly 25 to 40 km/h.

St Marys Temperature Statistics View More

December Temperature

Penrith Lakes (10km)

Lowest 20 July, 2025
-0.3 °C
Average 2025
18.3 °C
Highest 28 January, 2025
42.5 °C
Lowest 12 November, 2025
7.5 °C
Average November
21.4 °C
Highest 25 November, 2025
37.2 °C
Lowest 1 December, 2025
11.3 °C
Average December
23.7 °C
Highest 19 December, 2025
41.9 °C

Climate (2020–Present)

Penrith Lakes (10km)

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

Average Low 2020–2025
12.5 °C
Average 2020–2025
17.7 °C
Average High 2020–2025
24.8 °C

Get WillyWeather+ to remove ads