Peterson Reservoir Weather Forecast

    • 60
    • 83

    Mostly Sunny

    • 61
    • 82

    Chance Thunderstorms

    • 62
    • 84

    Chance Thunderstorms

    • 64
    • 87

    Chance Thunderstorms

    • 65
    • 91

    Slight Chance Thunderstorms

    • 63
    • 91

    Chance Thunderstorms

    • 56
    • 80

    Slight Chance Thunderstorms

Today 5 Jul Keya Paha

Mostly sunny with a 20 percent chance of Showers. Highs in the lower 80s. North Winds 10 to 15 Mph.

Tonight 5 Jul Keya Paha

Mostly clear. Lows around 60. Northeast Winds up to 10 Mph in the Evening, becoming light and variable.

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Peterson Reservoir Temperature Statistics

July Temperature

Ainsworth Regional Airport (39.8 miles)

  • Lowest 1 July, 2025

    55 °F

  • Average July

    76.1 °F

  • Highest 2 July, 2025

    91.4 °F

Climate (2020–Present)

Ainsworth Regional Airport (39.8 miles)

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  • Average Low 2020–2025

    37.4 °F

  • Average 2020–2025

    49.3 °F

  • Average High 2020–2025

    61.7 °F
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