Castle Hill Weather Forecast
- 19
- 28
Shower or two
- 20
- 27
Showers. Storm developing
- 19
- 28
Shower or two
- 19
- 23
Showers
- 18
- 25
Showers
- 18
- 24
Showers
- 18
- 24
Shower or two
Today 14 Jan Sydney
Partly cloudy. The chance of fog in the west in the early morning. Medium chance of showers, most likely in the late afternoon and evening. The chance of a thunderstorm in the west in the afternoon and evening. Light winds becoming northeasterly 15 to 25 km/h in the morning, reaching 25 to 35 km/h near the coast in the afternoon.
Castle Hill Temperature Statistics View More
January Temperature
Parramatta North (Masons Drive) (7km)
Lowest 2 January, 2026
16.8 °CAverage January
20.9 °CHighest 10 January, 2026
42.2 °C
Climate (2021–Present)
Parramatta North (Masons Drive) (7km)
Average Low 2021–2026
13 °CAverage 2021–2026
17.6 °CAverage High 2021–2026
23.6 °C