Olson Peak Weather Forecast

    • 21
    • 34

    Snow Showers Likely

    • 28
    • 39

    Chance Snow Showers

    • 27
    • 36

    Rain/Snow

    • 29
    • 41

    Mostly Cloudy

    • 33
    • 48

    Partly Sunny

    • 38
    • 51

    Partly Sunny

    • 39
    • 53

    Mostly Sunny

Today 18 May Southern Rocky Mountain Front

Not as cool. Partly sunny. Chance of snow Showers early in the Afternoon, then chance of snow Showers, rain Showers and slight chance of Thunderstorms late in the afternoon. Near steady temperature in the lower 40s. Northwest Winds up to 10 Mph. Chance of precipitation 50 percent.

Tonight 18 May Southern Rocky Mountain Front

Partly cloudy. A 20 percent chance of snow Showers in the evening. Lows 22 to 28. West Winds up to 10 Mph. Gusts up to 25 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Olson Peak Temperature Statistics

May Temperature

Helena Regional Airport (55.9 miles)

  • Lowest 6 May, 2026

    27.6 °F

  • Average May

    55.7 °F

  • Highest 13 May, 2026

    84.7 °F

Climate (2021–Present)

Helena Regional Airport (55.9 miles)

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  • Average Low 2021–2026

    36.5 °F

  • Average 2021–2026

    48.1 °F

  • Average High 2021–2026

    60.1 °F
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