Basin Lake Weather Forecast

    • 22
    • 37

    Chance Snow

    • 33
    • 43

    Chance Snow

    • 30
    • 45

    Snow Showers Likely

    • 32
    • 47

    Chance Snow

    • 32
    • 46

    Chance Snow

    • 37
    • 52

    Slight Chance Snow

Today 20 May Eastern Lemhi County

Mostly cloudy. Areas of rain until late afternoon. Areas of snow in the morning. Chance of rain Showers and a slight chance of Thunderstorms late in the afternoon. Chance of precipitation 50 percent. Highs in the 50s. Northwest Winds to 15 Mph in the afternoon.

Tonight 20 May Eastern Lemhi County

Partly cloudy. A 20 percent chance of rain in the evening. Lows in the upper 20s to mid 30s. Northwest Winds to 15 Mph.

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  • Temperature Forecast NOAA

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Basin Lake Temperature Statistics

May Temperature

Salmon, Lemhi County Airport (18.6 miles)

  • Lowest 1 May, 2025

    29.8 °F
  • Average May

    54 °F
  • Highest 10 May, 2025

    86 °F

Climate (2020–Present)

Salmon, Lemhi County Airport (18.6 miles)

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  • Average Low 2020–2025

    32.2 °F
  • Average 2020–2025

    45.2 °F
  • Average High 2020–2025

    58 °F
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