Union Gap Weather Forecast

    • 21
    • 45

    Mostly Sunny

    • 20
    • 37

    Partly Sunny

    • 16
    • 36

    Mostly Sunny

    • 19
    • 33

    Mostly Cloudy

    • 20
    • 34

    Partly Sunny

    • 21
    • 37

    Partly Sunny

    • 23
    • 37

    Mostly Cloudy

Today 17 Jan Yakima Valley

Sunny. Highs in the upper 30s to lower 40s. Northwest wind 5 to 10 Mph in the Morning, becoming light.

Tonight 17 Jan Yakima Valley

Clear. Patchy freezing fog overnight. Lows in the lower to mid 20s. Light wind.

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  • Temperature Real-Time

Union Gap Temperature Statistics

January Temperature

Yakima Air Terminal - McAllister Field (2.5 miles)

  • Lowest 13 January, 2025

    23 °F

  • Average January

    34.3 °F

  • Highest 11 January, 2025

    51.1 °F

Climate (2020–Present)

Yakima Air Terminal - McAllister Field (2.5 miles)

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  • Average Low 2020–2025

    39.6 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    65.1 °F
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