Union Gap Weather Forecast

    • 30
    • 41

    Rain Likely

    • 28
    • 43

    Rain

    • 23
    • 43

    Chance Rain/Snow

    • 23
    • 39

    Chance Snow

    • 22
    • 37

    Chance Snow

    • 18
    • 32

    Chance Snow

Today 30 Jan Yakima Valley

Mostly sunny. Highs in the upper 30s to lower 40s. Light wind.

Tonight 30 Jan Yakima Valley

Cloudy. A 50 percent chance of rain or snow overnight. Lows in the upper 20s to lower 30s. Light wind.

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  • Temperature Real-Time

Union Gap Temperature Statistics

January Temperature

Yakima Air Terminal - McAllister Field (2.5 miles)

  • Lowest 21 January, 2025

    13.7 °F

  • Average January

    32 °F

  • Highest 11 January, 2025

    52.6 °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

    52.7 °F

  • Average High 2020–2025

    65 °F
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