Hay Flat Weather Forecast
- 15
- 29
Partly cloudy
- 12
- 18
Partly cloudy
- 11
- 17
Cloudy
- 10
- 16
Cloudy
- 10
- 19
Sunny
- 11
- 29
Sunny
- 15
- 28
Sunny
Today 12 Dec Mount Lofty Ranges
Partly cloudy. Slight chance of a shower in the evening. The chance of a thunderstorm near the Barossa Valley at night. Winds east to northeasterly 20 to 30 km/h tending northwest to northeasterly in the morning then tending southeast to southwesterly 25 to 35 km/h in the middle of the day. Overnight temperatures falling to between 15 and 20 with daytime temperatures reaching 32 to 37.
Hay Flat Temperature Statistics View More
December Temperature
Parawa West (Second Valley Forest) (8km)
Lowest 7 December, 2025
7.1 °CAverage December
14.7 °CHighest 3 December, 2025
27.6 °C
Climate (2020–Present)
Parawa West (Second Valley Forest) (8km)
Average Low 2020–2025
10.4 °CAverage 2020–2025
13.4 °CAverage High 2020–2025
17.5 °C