Hillburn Reservoir Weather Forecast

    • 46
    • 64

    Increasing Clouds

    • 51
    • 70

    Rain Showers

    • 48
    • 63

    Rain Showers

    • 51
    • 65

    Chance Rain Showers

    • 58
    • 78

    Mostly Sunny

    • 58
    • 81

    Partly Sunny

    • 63
    • 83

    Partly Sunny

Today 12 May Rockland

Sunny. Highs in the mid 60s. West Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 12 May Rockland

Mostly clear in the Evening, then becoming mostly cloudy. Lows in the upper 40s. South Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hillburn Reservoir Temperature Statistics

May Temperature

Caldwell, Essex County Airport (18 miles)

  • Lowest 1 May, 2026

    42.1 °F

  • Average May

    57.8 °F

  • Highest 5 May, 2026

    82.9 °F

Climate (2021–Present)

Caldwell, Essex County Airport (18 miles)

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  • Average Low 2021–2026

    46.8 °F

  • Average 2021–2026

    56 °F

  • Average High 2021–2026

    65.3 °F
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