Merino Weather Forecast
- 10
- 17
Rain
- 8
- 19
Shower or two
- 9
- 18
Cloudy
- 9
- 19
Cloudy
- 9
- 18
Cloudy
- 8
- 22
Partly cloudy
- 8
- 30
Sunny
Today 21 Dec South West
Cloudy. Very high chance of rain, most likely in the morning and afternoon. The chance of a thunderstorm in the morning and early afternoon. Winds southeasterly 15 to 20 km/h tending south to southeasterly in the middle of the day then turning southwesterly 25 to 35 km/h in the early afternoon. Overnight temperatures falling to around 10 with daytime temperatures reaching between 17 and 22.
Merino Temperature Statistics View More
December Temperature
Casterton (24km)
Lowest 7 December, 2025
3.6 °CAverage December
16.1 °CHighest 18 December, 2025
37.3 °C
Climate (2020–Present)
Casterton (24km)
Average Low 2020–2025
8.4 °CAverage 2020–2025
13.5 °CAverage High 2020–2025
19.7 °C