Upper Main Arm Weather Forecast
- 23
- 31
Showers. Storm
- 22
- 28
Shower or two. Possible storm
- 21
- 32
Shower or two
- 21
- 25
Shower or two
- 18
- 23
Shower or two
- 17
- 25
Shower or two
- 17
- 26
Partly cloudy
Today 23 Dec Northern Rivers
Partly cloudy. High chance of showers. A thunderstorm likely in the afternoon and evening, possibly severe with damaging winds, large hail and heavy rain which may lead to flash flooding. Light winds. Overnight temperatures falling to the low 20s with daytime temperatures reaching the low 30s.
Upper Main Arm Temperature Statistics View More
December Temperature
Cape Byron (28km)
Lowest 3 December, 2025
16.6 °CAverage December
23.3 °CHighest 10 December, 2025
31 °C
Climate (2020–Present)
Cape Byron (28km)
Average Low 2020–2025
17.3 °CAverage 2020–2025
20.2 °CAverage High 2020–2025
23.7 °C