Mertz Reservoir Weather Forecast

    • 59
    • 76

    Rain Showers

    • 61
    • 87

    Chance Thunderstorms

    • 58
    • 82

    Rain Showers Likely

    • 58
    • 83

    Chance Thunderstorms

    • 61
    • 87

    Partly Sunny

    • 61
    • 89

    Slight Chance Thunderstorms

Today 13 Aug Central Laramie Range and Southwest Platte County

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms after Midnight, then Showers with Thunderstorms likely this afternoon. Not as warm with Highs in the lower 70s. East Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 90 percent.

Tonight 13 Aug Central Laramie Range and Southwest Platte County

Mostly cloudy with Showers likely with a chance of Thunderstorms in the Evening, then partly cloudy after midnight. Lows in the upper 50s. Southeast Winds 10 to 15 Mph, becoming south 5 to 10 Mph after midnight. Chance of rain 70 percent.

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  • Temperature Real-Time

Mertz Reservoir Temperature Statistics

August Temperature

Camp Guernsey (28.6 miles)

  • Lowest 5 August, 2026

    50 °F

  • Average August

    79.5 °F

  • Highest 2 August, 2026

    106.3 °F

Climate (2021–2026)

Camp Guernsey (28.6 miles)

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  • Average Low 2021–2026

    36.2 °F

  • Average 2021–2026

    50.1 °F

  • Average High 2021–2026

    63.8 °F
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