Sullivan Weather Forecast

    • 50
    • 66

    Partly Sunny

    • 57
    • 76

    Increasing Clouds

    • 57
    • 73

    Chance Rain Showers

    • 44
    • 69

    Mostly Sunny

    • 47
    • 64

    Rain Showers Likely

    • 49
    • 62

    Rain Showers Likely

    • 49
    • 64

    Chance Rain Showers

Today 15 Sep Cheshire

Partly sunny. Highs in the upper 60s. Light and variable Winds.

Tonight 15 Sep Cheshire

Partly cloudy. Patchy fog after midnight. Lows around 50. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sullivan Temperature Statistics

September Temperature

Keene, Dillant-Hopkins Airport (8.1 miles)

  • Lowest 12 September, 2026

    42.8 °F

  • Average September

    64.2 °F

  • Highest 10 September, 2026

    82 °F

Climate (2021–2026)

Keene, Dillant-Hopkins Airport (8.1 miles)

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  • Average Low 2021–2026

    37.7 °F

  • Average 2021–2026

    48.2 °F

  • Average High 2021–2026

    58.7 °F
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