Cassie Rock Weather Forecast
- 23
- 31
Partly cloudy
- 23
- 31
Shower or two. Possible storm
- 24
- 27
Shower or two
- 22
- 27
Partly cloudy
- 22
- 27
Shower or two developing
- 21
- 23
Showers
- 20
- 23
Shower or two
Today 21 Feb Sydney
Partly cloudy. The chance of fog in the west early this morning. Slight chance of a shower, most likely during this afternoon and early evening. The chance of a thunderstorm during this afternoon and early evening, possibly severe with damaging winds, large hail and heavy rain which may lead to flash flooding in the west. Light winds becoming southeasterly 15 to 25 km/h in the early afternoon then becoming light in the late evening.
Sydney Coastal Waters
Broken Bay to Port Hacking- Wind
- Northerly 10 to 15 knots shifting south to southeasterly in the late morning and early afternoon then decreasing to about 10 knots in the evening.
- Seas
- Around 1 metre.
- 1st Swell
- Southerly 1 to 1.5 metres, decreasing to around 1 metre during the morning.
- Weather
- Partly cloudy. The chance of a thunderstorm during the morning and afternoon.
- Weather Situation
- Winds are northerly ahead of a southerly wind change moving along the southern half of the coast as a weak trough moves through and decays during Saturday. Winds turn fresh north to northwesterly by Sunday as a high builds over the Tasman, ahead of another southerly change moving along the southern half of the coast on Monday with the next trough.
Cassie Rock Temperature Statistics View More
February Temperature
Terrey Hills (10km)
Lowest 3 February, 2026
14.5 °CAverage February
21.6 °CHighest 18 February, 2026
35.6 °C
Climate (2021–Present)
Terrey Hills (10km)
Average Low 2021–2026
13.4 °CAverage 2021–2026
16.9 °CAverage High 2021–2026
21.9 °C