Garneill Weather Forecast

    • 52
    • 74

    Rain Showers

    • 50
    • 70

    Rain Showers

    • 51
    • 72

    Rain Showers Likely

    • 55
    • 83

    Mostly Sunny

    • 55
    • 86

    Mostly Sunny

    • 54
    • 85

    Slight Chance Thunderstorms

    • 54
    • 84

    Slight Chance Thunderstorms

Today 21 Jul Judith Basin County and Judith Gap

Mostly cloudy. Slight chance of rain Showers late in the Morning, then rain Showers likely and chance of Thunderstorms in the afternoon. Highs 70 to 75. Northeast Winds 5 to 15 Mph. Chance of precipitation 70 percent.

Tonight 21 Jul Judith Basin County and Judith Gap

Rain Showers and chance of Thunderstorms in the Evening, then chance of rain Showers and slight chance of Thunderstorms after midnight. Some Thunderstorms may produce damaging Winds and large hail in the evening. Lows 50 to 55. North Winds 5 to 15 Mph. Chance of precipitation near 100 percent.

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Garneill Temperature Statistics

July Temperature

Lewistown, Lewistown Municipal Airport (24.2 miles)

  • Lowest 17 July, 2025

    43.6 °F

  • Average July

    66.2 °F

  • Highest 8 July, 2025

    93.7 °F

Climate (2020–Present)

Lewistown, Lewistown Municipal Airport (24.2 miles)

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  • Average Low 2020–2025

    32.3 °F

  • Average 2020–2025

    44.4 °F

  • Average High 2020–2025

    56.4 °F
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