Castle Rock Weather Forecast

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    Rain Showers

    • 47
    • 62

    Chance Rain Showers

    • 45
    • 54

    Chance Rain Showers

    • 45
    • 54

    Partly Sunny

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    • 55

    Rain Showers Likely

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    Rain Showers Likely

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    Chance Rain Showers

Today 9 May Eastern Essex

Showers with isolated Thunderstorms. Highs in the upper 50s. Southeast Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 80 percent.

Tonight 9 May Eastern Essex

Mostly cloudy. Showers, mainly this evening. Patchy fog this evening. Near steady temperature in the lower 50s. South Winds 10 to 15 Mph. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Castle Rock Temperature Statistics

May Temperature

Boston, Logan International Airport (6.2 miles)

  • Lowest 3 May, 2026

    44.7 °F

  • Average May

    58 °F

  • Highest 5 May, 2026

    79.6 °F

Climate (2021–Present)

Boston, Logan International Airport (6.2 miles)

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  • Average Low 2021–2026

    46.7 °F

  • Average 2021–2026

    53.6 °F

  • Average High 2021–2026

    61 °F
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