Wychmere Harbor Weather Forecast

    • 31
    • 39

    Rain

    • 27
    • 40

    Chance Rain/Snow

    • 25
    • 39

    Chance Rain

    • 25
    • 33

    Rain Likely

    • 30
    • 37

    Chance Rain

    • 26
    • 44

    Chance Snow

Today 23 Dec Barnstable

A chance of rain in the Morning, then rain in the afternoon. Highs around 40. West Winds 5 to 10 Mph, becoming south in the afternoon. Chance of rain near 100 percent.

Tonight 23 Dec Barnstable

Mostly cloudy. Rain Likely, mainly in the evening. Near steady temperature in the mid 30s. South Winds 5 to 10 Mph with Gusts up to 20 Mph, increasing to west 15 to 20 Mph with Gusts up to 30 Mph after midnight. Chance of rain 70 percent.

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Wychmere Harbor Temperature Statistics

December Temperature

Chatham, Chatham Municipal Airport (3.7 miles)

  • Lowest 15 December, 2025

    18 °F

  • Average December

    34.9 °F

  • Highest 19 December, 2025

    54 °F

Climate (2020–Present)

Chatham, Chatham Municipal Airport (3.7 miles)

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  • Average Low 2020–2025

    47.6 °F

  • Average 2020–2025

    53.9 °F

  • Average High 2020–2025

    60 °F
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