Gunlock Reservoir Weather Forecast

    • 65
    • 94

    Slight Chance Thunderstorms

    • 63
    • 95

    Mostly Sunny

    • 63
    • 96

    Mostly Sunny

    • 62
    • 96

    Mostly Sunny

    • 62
    • 97

    Hot

    • 63
    • 98

    Hot

Today 21 Jul Lower Washington County

Partly sunny in the Morning, then partly cloudy with a 20 percent chance of Showers and Thunderstorms in the afternoon. Highs in the mid 90s.

Tonight 21 Jul Lower Washington County

Mostly clear. Lows in the mid 70s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Gunlock Reservoir Temperature Statistics

July Temperature

St George Municipal Airport (20.5 miles)

  • Lowest 6 July, 2025

    71.1 °F

  • Average July

    90.4 °F

  • Highest 9 July, 2025

    108 °F

Climate (2020–Present)

St George Municipal Airport (20.5 miles)

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  • Average Low 2020–2025

    52.2 °F

  • Average 2020–2025

    64.3 °F

  • Average High 2020–2025

    76.6 °F
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