Diamond Lake Weather Forecast

    • 29
    • 61

    Breezy

    • 24
    • 45

    Partly Sunny

    • 32
    • 48

    Mostly Cloudy

    • 32
    • 64

    Partly Sunny

    • 35
    • 55

    Mostly Cloudy

    • 39
    • 64

    Partly Sunny

Today 19 Dec Brown

Breezy. Mostly sunny. Highs in the lower 60s. Southwest Winds 15 to 25 Mph.

Tonight 19 Dec Brown

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the upper 20s. Southwest Winds 15 to 20 Mph, becoming northwest 10 to 15 Mph after midnight.

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Diamond Lake Temperature Statistics

December Temperature

Ainsworth Regional Airport (24.2 miles)

  • Lowest 13 December, 2025

    -3.8 °F

  • Average December

    31.4 °F

  • Highest 16 December, 2025

    66.6 °F

Climate (2020–Present)

Ainsworth Regional Airport (24.2 miles)

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  • Average Low 2020–2025

    37.8 °F

  • Average 2020–2025

    49.4 °F

  • Average High 2020–2025

    61.8 °F
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