Grass Valley Weather Forecast
- 7
- 23
Mostly sunny
- 10
- 25
Partly cloudy
- 13
- 29
Sunny
- 16
- 31
Sunny
- 14
- 24
Showers
- 9
- 20
Possible shower
- 8
- 24
Partly cloudy
Today 14 Sep Central Wheat Belt
Mostly sunny. The chance of fog in the southwest in the early morning. The chance of a thunderstorm in the northeast in the afternoon and early evening. Winds southeasterly 15 to 25 km/h. Daytime maximum temperatures in the low to mid 20s.
Grass Valley Temperature Statistics View More
September Temperature
Northam (13km)
Lowest 13 September, 2026
5 °CAverage September
13.5 °CHighest 11 September, 2026
26 °C
Climate (2021–2026)
Northam (13km)
Average Low 2021–2026
11.4 °CAverage 2021–2026
17.4 °CAverage High 2021–2026
26.5 °C