Onyon Airport Weather Forecast

    • 57
    • 81

    Mostly Sunny

    • 53
    • 77

    Chance Rain Showers

    • 50
    • 73

    Slight Chance Rain Showers

    • 53
    • 77

    Partly Sunny

    • 50
    • 75

    Partly Sunny

    • 57
    • 71

    Chance Rain Showers

Today 4 Sep Western Windham

Mostly sunny. Patchy fog this morning. A slight chance of Showers this afternoon. Highs in the mid 70s. Northwest Winds around 5 Mph. Chance of rain 20 percent.

Tonight 4 Sep Western Windham

Mostly clear. Patchy fog after midnight. Lows in the lower 50s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Onyon Airport Temperature Statistics

September Temperature

Keene, Dillant-Hopkins Airport (21.1 miles)

  • Lowest 2 September, 2026

    60.8 °F

  • Average September

    65.2 °F

  • Highest 2 September, 2026

    71.1 °F

Climate (2021–2026)

Keene, Dillant-Hopkins Airport (21.1 miles)

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  • Average Low 2021–2026

    37.7 °F

  • Average 2021–2026

    48.1 °F

  • Average High 2021–2026

    58.7 °F
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