Prospect Hill Weather Forecast

    • 52
    • 78

    Becoming Sunny

    • 64
    • 77

    Rain Showers

    • 63
    • 79

    Rain Showers Likely

    • 54
    • 75

    Partly Sunny

    • 60
    • 73

    Partly Sunny

    • 62
    • 80

    Partly Sunny

Today 11 Sep Southern New Haven

Mostly sunny. Highs in the upper 70s. Northwest Winds 5 to 10 Mph, becoming west this afternoon.

Tonight 11 Sep Southern New Haven

Mostly clear. Patchy fog after midnight. Lows in the mid 50s. North Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Prospect Hill Temperature Statistics

September Temperature

New Haven, Tweed-New Haven Airport (4.3 miles)

  • Lowest 7 September, 2026

    52 °F

  • Average September

    69.5 °F

  • Highest 4 September, 2026

    82.9 °F

Climate (2021–2026)

New Haven, Tweed-New Haven Airport (4.3 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    55.5 °F

  • Average High 2021–2026

    63.3 °F
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