Herman Lake Weather Forecast

    • 24
    • 34

    Gradual Clearing

    • 20
    • 37

    Mostly Sunny

    • 19
    • 33

    Mostly Sunny

    • 21
    • 33

    Partly Sunny

    • 24
    • 35

    Mostly Cloudy

    • 27
    • 40

    Mostly Cloudy

    • 28
    • 41

    Mostly Cloudy

Today 22 Jan Moses Lake Area

Cloudy. Highs in the lower to mid 30s. Light wind.

Tonight 22 Jan Moses Lake Area

Mostly cloudy. Lows in the lower to mid 20s. Light Wind, becoming north 5 to 10 Mph overnight.

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  • Temperature Real-Time

Herman Lake Temperature Statistics

January Temperature

Grant County Airport (20.5 miles)

  • Lowest 1 January, 2026

    18 °F

  • Average January

    33.6 °F

  • Highest 12 January, 2026

    51.1 °F

Climate (2021–Present)

Grant County Airport (20.5 miles)

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  • Average Low 2021–2026

    41 °F

  • Average 2021–2026

    52.8 °F

  • Average High 2021–2026

    64.2 °F
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