Gregg Lake Weather Forecast

    • 56
    • 90

    Breezy

    • 41
    • 84

    Breezy

    • 43
    • 83

    Mostly Sunny

    • 45
    • 81

    Chance Thunderstorms

    • 35
    • 71

    Rain Showers Likely

    • 31
    • 52

    Chance Rain Showers

    • 36
    • 60

    Partly Sunny

Today 13 May Box Butte

Sunny, Breezy, warmer with Highs in the upper 80s. South Winds 20 to 25 Mph with Gusts up to 40 Mph.

Tonight 13 May Box Butte

Mostly cloudy. A slight chance of Showers and Thunderstorms in the evening. Breezy and not as cool with Lows in the upper 50s. South Winds 20 to 25 Mph with Gusts up to 40 Mph, becoming southwest 15 to 20 Mph with Gusts up to 30 Mph after midnight. Chance of rain 20 percent.

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Gregg Lake Temperature Statistics

May Temperature

Chadron, Chadron Municipal Airport (29.2 miles)

  • Lowest 6 May, 2026

    23 °F

  • Average May

    53.4 °F

  • Highest 11 May, 2026

    93 °F

Climate (2021–Present)

Chadron, Chadron Municipal Airport (29.2 miles)

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  • Average Low 2021–2026

    35.9 °F

  • Average 2021–2026

    50.1 °F

  • Average High 2021–2026

    64.4 °F
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