Castlereagh Weather Forecast

Today 17 Aug
- 5
- 18
Mostly sunny
Mon 18 Aug
- 4
- 17
Shower or two
Tue 19 Aug
- 8
- 16
Showers
Wed 20 Aug
- 9
- 16
Showers
Thu 21 Aug
- 10
- 17
Showers
Fri 22 Aug
- 11
- 19
Shower or two
Sat 23 Aug
- 10
- 20
Shower or two

Today 17 Aug
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 18 Aug
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 19 Aug
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 20 Aug
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 21 Aug
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 22 Aug
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 Aug
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 17 Aug Sydney

Mostly sunny. Winds southwesterly 15 to 20 km/h becoming light in the middle of the day.

Castlereagh Temperature Statistics View More

August Temperature

Penrith Lakes (5km)

Lowest 20 July, 2025
-0.3 °C
Average 2025
17.6 °C
Highest 28 January, 2025
42.5 °C
Lowest 20 July, 2025
-0.3 °C
Average July
11.3 °C
Highest 6 July, 2025
22.9 °C
Lowest 13 August, 2025
4.8 °C
Average August
12.5 °C
Highest 5 August, 2025
22 °C

Climate (2020–Present)

Penrith Lakes (5km)

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Average Low 2020–2025
12.5 °C
Average 2020–2025
17.7 °C
Average High 2020–2025
24.7 °C

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