Bethlehem Weather Forecast

    • 48
    • 75

    Gradual Clearing

    • 51
    • 77

    Mostly Sunny

    • 53
    • 73

    Chance Rain Showers

    • 54
    • 77

    Rain Showers Likely

    • 48
    • 74

    Chance Rain Showers

    • 49
    • 72

    Partly Sunny

Today 20 Aug Northern Grafton

Partly sunny this Morning, then becoming cloudy. Areas of fog this morning. Highs in the mid 70s. Light and variable Winds.

Tonight 20 Aug Northern Grafton

Partly cloudy in the Evening, then clearing. Patchy fog after midnight. Lows around 50. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Bethlehem Temperature Statistics

August Temperature

Whitefield - Mount Washington Regional Airport (8.7 miles)

  • Lowest 16 August, 2026

    41 °F

  • Average August

    67.1 °F

  • Highest 6 August, 2026

    90 °F

Climate (2021–2026)

Whitefield - Mount Washington Regional Airport (8.7 miles)

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  • Average Low 2021–2026

    32.3 °F

  • Average 2021–2026

    44 °F

  • Average High 2021–2026

    55.1 °F
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