Castle Rock Weather Forecast

    • 24
    • 39

    Becoming Sunny

    • 33
    • 38

    Mostly Sunny

    • 33
    • 43

    Chance Snow

    • 16
    • 34

    Snow Likely

    • 19
    • 26

    Partly Sunny

    • 31
    • 35

    Chance Rain

    • 34
    • 43

    Slight Chance Snow

Today 26 Feb Eastern Essex

Mostly sunny. Near steady temperature in the upper 30s. West Winds 5 to 10 Mph.

Tonight 26 Feb Eastern Essex

Partly cloudy this Evening, then clearing. Lows around 17. Northwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Castle Rock Temperature Statistics

February Temperature

Boston, Logan International Airport (6.2 miles)

  • Lowest 8 February, 2026

    4.6 °F

  • Average February

    28.1 °F

  • Highest 13 February, 2026

    40.6 °F

Climate (2021–Present)

Boston, Logan International Airport (6.2 miles)

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  • Average Low 2021–2026

    46.8 °F

  • Average 2021–2026

    53.7 °F

  • Average High 2021–2026

    61 °F
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