Bethlehem Weather Forecast

    • 50
    • 69

    Rain Showers Likely

    • 48
    • 61

    Rain Showers Likely

    • 44
    • 63

    Chance Rain Showers

    • 44
    • 64

    Slight Chance Rain Showers

    • 48
    • 72

    Mostly Sunny

    • 49
    • 77

    Partly Sunny

Today 16 Sep Northern Black Hills

Partly cloudy with a slight chance of Showers in the Morning, then mostly cloudy with a chance of Showers and Thunderstorms in the afternoon. Highs in the mid 60s. North Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 16 Sep Northern Black Hills

Partly cloudy with isolated Showers. Lows in the mid 40s. Southwest Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Bethlehem Temperature Statistics

September Temperature

Spearfish / Clyde Ice (19.3 miles)

  • Lowest 5 September, 2025

    39.2 °F

  • Average September

    64.2 °F

  • Highest 11 September, 2025

    91.4 °F

Climate (2020–Present)

Spearfish / Clyde Ice (19.3 miles)

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  • Average Low 2020–2025

    36.1 °F

  • Average 2020–2025

    47.4 °F

  • Average High 2020–2025

    58.2 °F
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