Lake Hiawatha Weather Forecast

    • 40
    • 49

    Rain

    • 25
    • 57

    Rain

    • 30
    • 38

    Partly Sunny

    • 23
    • 44

    Mostly Sunny

    • 23
    • 34

    Partly Sunny

    • 31
    • 39

    Chance Rain/Snow

    • 28
    • 43

    Mostly Cloudy

Today 18 Dec Morris

Mostly sunny. Highs in the mid 40s. Southeast Winds around 5 Mph.

Tonight 18 Dec Morris

A chance of rain this Evening, then rain after midnight. Not as cool with Lows in the upper 30s. Temperature rising to around 50 after midnight. Southeast Winds around 5 Mph, increasing to south 10 to 15 Mph with Gusts up to 35 Mph after midnight. Chance of rain near 100 percent.

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Lake Hiawatha Temperature Statistics

December Temperature

Caldwell, Essex County Airport (5 miles)

  • Lowest 9 December, 2025

    12.9 °F

  • Average December

    30.1 °F

  • Highest 10 December, 2025

    44.1 °F

Climate (2020–Present)

Caldwell, Essex County Airport (5 miles)

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  • Average Low 2020–2025

    47 °F

  • Average 2020–2025

    56.2 °F

  • Average High 2020–2025

    65.4 °F
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