Sumner Lake State Park Weather Forecast

    • 57
    • 79

    Thunderstorms

    • 58
    • 81

    Thunderstorms

    • 59
    • 85

    Mostly Sunny

    • 59
    • 88

    Mostly Sunny

    • 56
    • 87

    Mostly Sunny

    • 54
    • 80

    Mostly Sunny

Today 18 Sep De Baca County

Partly cloudy. Isolated Showers and Thunderstorms this afternoon. Highs around 80. Chance of rain 20 percent.

Tonight 18 Sep De Baca County

Partly cloudy. Isolated Showers and Thunderstorms in the evening. Lows in the upper 50s. Chance of rain 20 percent.

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Sumner Lake State Park Temperature Statistics

September Temperature

Melrose Gunnery Range (39.1 miles)

  • Lowest 6 September, 2025

    55.9 °F

  • Average September

    72.3 °F

  • Highest 9 September, 2025

    94.8 °F

Climate (2020–Present)

Melrose Gunnery Range (39.1 miles)

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  • Average Low 2020–2025

    45.4 °F

  • Average 2020–2025

    58.6 °F

  • Average High 2020–2025

    72.2 °F
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