Prosser Weather Forecast

    • 25
    • 49

    Becoming Sunny

    • 21
    • 54

    Mostly Sunny

    • 26
    • 42

    Mostly Cloudy

    • 22
    • 41

    Partly Sunny

    • 32
    • 49

    Partly Sunny

    • 29
    • 54

    Partly Sunny

Today 30 Dec Adams

Sunny. Highs around 50. Northwest Winds 10 to 15 Mph with Gusts to around 25 Mph.

Tonight 30 Dec Adams

Clear. Lows in the mid 20s. Northwest Winds around 10 Mph.

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Prosser Temperature Statistics

December Temperature

Hastings, Hastings Municipal Airport (9.3 miles)

  • Lowest 13 December, 2025

    3 °F

  • Average December

    34.3 °F

  • Highest 26 December, 2025

    69.1 °F

Climate (2020–Present)

Hastings, Hastings Municipal Airport (9.3 miles)

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  • Average Low 2020–2025

    41.9 °F

  • Average 2020–2025

    53.2 °F

  • Average High 2020–2025

    64.8 °F
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