Waterloo Weather Forecast
- 14
- 33
Partly cloudy
- 16
- 24
Shower
- 10
- 23
Cloudy
- 11
- 23
Cloudy
- 9
- 24
Partly cloudy
- 10
- 27
Partly cloudy
- 11
- 29
Partly cloudy
Today 20 Dec Mid North
Mostly sunny. Slight chance of a shower in the east, near zero chance elsewhere. The chance of a thunderstorm in the north in the late afternoon and evening. Winds southeast to southwesterly 15 to 20 km/h tending west to southwesterly 15 to 25 km/h in the middle of the day then tending southeast to southwesterly 15 to 20 km/h in the evening. Overnight temperatures falling to around 14 with daytime temperatures reaching 30 to 35.
Waterloo Temperature Statistics View More
December Temperature
Eudunda (27km)
Lowest 2 December, 2025
2.5 °CAverage December
19.3 °CHighest 18 December, 2025
39.2 °C
Climate (2020–Present)
Eudunda (27km)
Average Low 2020–2025
9.8 °CAverage 2020–2025
13.7 °CAverage High 2020–2025
21.2 °C