Northwest Harwich Weather Forecast

    • 35
    • 43

    Rain Showers

    • 29
    • 46

    Mostly Sunny

    • 34
    • 43

    Rain Likely

    • 38
    • 53

    Rain

    • 23
    • 48

    Slight Chance Rain

    • 27
    • 36

    Partly Sunny

Today 13 Mar Barnstable

Sunny this Morning, then becoming partly sunny. Highs in the lower 40s. West Winds 10 to 15 Mph, becoming southwest this afternoon. Gusts up to 30 Mph.

Tonight 13 Mar Barnstable

Mostly cloudy. A slight chance of rain Showers in the Evening, then scattered rain Showers after midnight. Lows in the mid 30s. South Winds 15 to 20 Mph. Gusts up to 30 Mph, increasing to 40 Mph after midnight. Chance of rain 40 percent.

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  • Temperature Real-Time

Northwest Harwich Temperature Statistics

March Temperature

Chatham, Chatham Municipal Airport (5.6 miles)

  • Lowest 3 March, 2026

    15.1 °F

  • Average March

    36.5 °F

  • Highest 9 March, 2026

    59 °F

Climate (2021–Present)

Chatham, Chatham Municipal Airport (5.6 miles)

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  • Average Low 2021–2026

    47.5 °F

  • Average 2021–2026

    53.8 °F

  • Average High 2021–2026

    59.9 °F
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