Grassmere Weather Forecast
- 10
- 21
Mostly sunny
- 11
- 20
Showers increasing
- 10
- 17
Partly cloudy
- 10
- 22
Shower or two
- 12
- 19
Possible early shower
- 9
- 19
Partly cloudy
- 9
- 19
Partly cloudy
Today 5 Dec Warrnambool
Mostly sunny. Light winds becoming south to southwesterly 15 to 20 km/h in the late afternoon then tending west to southwesterly in the evening.
Grassmere Temperature Statistics View More
December Temperature
Warrnambool Airport (6km)
Lowest 3 December, 2025
5.7 °CAverage December
16 °CHighest 3 December, 2025
27.6 °C
Climate (2020–Present)
Warrnambool Airport (6km)
Average Low 2020–2025
8.8 °CAverage 2020–2025
13.4 °CAverage High 2020–2025
19 °C