Castle Rock Weather Forecast

    • 65
    • 67

    Chance Rain Showers

    • 67
    • 73

    Chance Rain Showers

    • 63
    • 75

    Mostly Sunny

    • 64
    • 73

    Mostly Sunny

    • 65
    • 75

    Partly Sunny

    • 67
    • 75

    Chance Rain Showers

Today 22 Aug Eastern Essex

Mostly cloudy with a 40 percent chance of Showers. Patchy fog this afternoon. Highs in the lower 70s. Northeast Winds 5 to 10 Mph.

Tonight 22 Aug Eastern Essex

Cloudy. A slight chance of Showers in the Evening, then a chance of Showers after midnight. Patchy fog. Lows in the lower 60s. Northeast Winds 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Castle Rock Temperature Statistics

August Temperature

Boston, Logan International Airport (6.2 miles)

  • Lowest 16 August, 2026

    62.7 °F

  • Average August

    77.9 °F

  • Highest 7 August, 2026

    94.6 °F

Climate (2021–2026)

Boston, Logan International Airport (6.2 miles)

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  • Average Low 2021–2026

    46.7 °F

  • Average 2021–2026

    53.7 °F

  • Average High 2021–2026

    61 °F
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