Powder House Square Weather Forecast

    • 66
    • 78

    Mostly Sunny

    • 73
    • 94

    Slight Chance Thunderstorms

    • 55
    • 90

    Rain Showers Likely

    • 49
    • 68

    Partly Sunny

    • 49
    • 69

    Chance Rain Showers

    • 49
    • 62

    Rain Showers Likely

    • 50
    • 63

    Chance Rain Showers

Today 18 May Southeast Middlesex

Sunny. Highs in the upper 70s. East Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 18 May Southeast Middlesex

Mostly clear. Lows in the mid 60s. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Powder House Square Temperature Statistics

May Temperature

Boston, Logan International Airport (5.6 miles)

  • Lowest 9 May, 2026

    42.7 °F

  • Average May

    57.4 °F

  • Highest 5 May, 2026

    79.6 °F

Climate (2021–Present)

Boston, Logan International Airport (5.6 miles)

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  • Average Low 2021–2026

    46.7 °F

  • Average 2021–2026

    53.6 °F

  • Average High 2021–2026

    60.9 °F
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