Castle Rock Weather Forecast

    • 45
    • 52

    Sunny

    • 49
    • 56

    Partly Sunny

    • 50
    • 58

    Breezy

    • 49
    • 54

    Breezy

    • 50
    • 56

    Mostly Cloudy

    • 49
    • 56

    Breezy

Today 18 Oct Eastern Essex

Sunny. Areas of frost in the morning. Highs in the lower 50s. Northwest Winds around 5 Mph, becoming south in the afternoon.

Tonight 18 Oct Eastern Essex

Clear. Areas of frost after midnight. Lows in the mid 30s. South Winds around 5 Mph.

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Castle Rock Temperature Statistics

October Temperature

Boston, Logan International Airport (6.2 miles)

  • Lowest 7 October, 2026

    43.6 °F

  • Average October

    61.4 °F

  • Highest 2 October, 2026

    87.7 °F

Climate (2021–2026)

Boston, Logan International Airport (6.2 miles)

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  • Average Low 2021–2026

    46.6 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    60.9 °F
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