Johnson Dam Weather Forecast

    • 70
    • 99

    Hot

    • 66
    • 99

    Hot

    • 66
    • 94

    Mostly Sunny

    • 69
    • 98

    Chance Thunderstorms

    • 65
    • 99

    Hot

    • 60
    • 90

    Partly Sunny

Today 15 Jul Northern Perkins

Sunny. Highs in the upper 90s. Southeast Winds 10 to 20 Mph.

Tonight 15 Jul Northern Perkins

Mostly clear. Lows around 70. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Johnson Dam Temperature Statistics

July Temperature

Hettinger, Hettinger Municipal Airport (20.5 miles)

  • Lowest 10 July, 2026

    53.7 °F

  • Average July

    75.4 °F

  • Highest 12 July, 2026

    108.6 °F

Climate (2021–2026)

Hettinger, Hettinger Municipal Airport (20.5 miles)

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  • Average Low 2021–2026

    31.2 °F

  • Average 2021–2026

    45 °F

  • Average High 2021–2026

    58.6 °F
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