Hornsby Heights Weather Forecast

Today 17 Sep
- 16
- 25
Clear
Thu 18 Sep
- 10
- 22
Sunny
Fri 19 Sep
- 10
- 26
Shower or two
Sat 20 Sep
- 16
- 21
Sunny
Sun 21 Sep
- 8
- 21
Mostly sunny
Mon 22 Sep
- 10
- 22
Partly cloudy
Tue 23 Sep
- 10
- 18
Possible shower

Today 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
Thu 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
Fri 19 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
Sat 20 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 21 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 22 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 23 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 17 Sep Sydney

Clear. Winds southwesterly 15 to 20 km/h.

Hornsby Heights Temperature Statistics View More

September Temperature

Terrey Hills (12km)

Lowest 25 July, 2025
4.3 °C
Average 2025
16.6 °C
Highest 28 January, 2025
40.1 °C
Lowest 18 August, 2025
5.1 °C
Average August
12.4 °C
Highest 26 August, 2025
21.7 °C
Lowest 1 September, 2025
7 °C
Average September
15.5 °C
Highest 8 September, 2025
27.7 °C

Climate (2020–Present)

Terrey Hills (12km)

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Average Low 2020–2025
13.4 °C
Average 2020–2025
16.9 °C
Average High 2020–2025
21.7 °C

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