Prosser Weather Forecast

    • 31
    • 55

    Decreasing Clouds

    • 39
    • 55

    Mostly Cloudy

    • 36
    • 54

    Rain

    • 34
    • 58

    Chance Rain

    • 38
    • 63

    Mostly Sunny

    • 42
    • 69

    Partly Sunny

Today 30 Mar Lower Columbia Basin of Washington

Mostly sunny. Highs in the lower to mid 50s. Northwest wind 5 to 15 Mph. Gusts up to 25 Mph in the morning.

Tonight 30 Mar Lower Columbia Basin of Washington

Partly cloudy. Lows around 30. Northeast wind 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Prosser Temperature Statistics

March Temperature

Sunnyside Municipal Airport (12.4 miles)

  • Lowest 10 March, 2026

    22.8 °F

  • Average March

    45.3 °F

  • Highest 7 March, 2026

    71.4 °F

Climate (2021–Present)

Sunnyside Municipal Airport (12.4 miles)

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  • Average Low 2021–2026

    39.1 °F

  • Average 2021–2026

    51.5 °F

  • Average High 2021–2026

    63.6 °F
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