Sumner Lake State Park Weather Forecast

    • 27
    • 42

    Decreasing Clouds

    • 27
    • 50

    Mostly Sunny

    • 28
    • 56

    Mostly Sunny

    • 27
    • 53

    Sunny

    • 30
    • 60

    Mostly Sunny

    • 40
    • 62

    Mostly Sunny

Today 4 Dec De Baca County

Mostly cloudy in the Morning, then becoming partly cloudy. Areas of freezing fog in the morning. Highs in the lower 40s.

Tonight 4 Dec De Baca County

Cold. Mostly clear. Lows in the mid 20s. Southwest Winds 15 to 20 Mph.

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Sumner Lake State Park Temperature Statistics

December Temperature

Melrose Gunnery Range (39.1 miles)

  • Lowest 1 December, 2025

    16.5 °F

  • Average December

    35.9 °F

  • Highest 2 December, 2025

    60.4 °F

Climate (2020–Present)

Melrose Gunnery Range (39.1 miles)

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  • Average Low 2020–2025

    45.6 °F

  • Average 2020–2025

    58.7 °F

  • Average High 2020–2025

    72.4 °F
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