American River Weather Forecast

    • 14
    • 20

    Partly cloudy

    • 12
    • 20

    Cloudy

    • 13
    • 19

    Partly cloudy

    • 12
    • 20

    Cloudy

    • 13
    • 18

    Cloudy

    • 13
    • 21

    Mostly sunny

    • 14
    • 30

    Sunny

Today 21 Dec Kangaroo Island

Cloudy. Winds southerly 25 to 35 km/h decreasing to 15 to 20 km/h in the late evening.

Investigator Strait Coastal Waters

Wind
Southwesterly 20 to 25 knots tending southerly 15 to 25 knots in the late afternoon.
Seas
1.5 to 2 metres, decreasing below 1.5 metres later in the evening.
1st Swell
West to southwesterly below 1 metre, increasing to 1 to 1.5 metres by early evening.
Weather
Partly cloudy.
Weather Situation
A broad trough of low pressure lies over the far northeast as a ridge of high pressure ridge builds over the west and south of the State during Sunday evening. The high pressure ridge extends across the entire State and Coastal Waters by early Monday and persists until Thursday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

American River Temperature Statistics View More

December Temperature

Kingscote Airport (24km)

  • Lowest 7 December, 2025

    3.8 °C
  • Average December

    18 °C
  • Highest 18 December, 2025

    41 °C

Climate (2020–Present)

Kingscote Airport (24km)

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  • Average Low 2020–2025

    9.2 °C
  • Average 2020–2025

    14.7 °C
  • Average High 2020–2025

    21.1 °C
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