Merrill Weather Forecast

    • 41
    • 70

    Decreasing Clouds

    • 43
    • 74

    Partly Sunny

    • 43
    • 83

    Partly Sunny

    • 26
    • 54

    Mostly Cloudy

    • 37
    • 53

    Mostly Cloudy

    • 40
    • 63

    Mostly Cloudy

Today 19 Mar Plymouth

Mostly sunny. Highs around 70. Northeast Winds around 5 Mph, becoming south this afternoon.

Tonight 19 Mar Plymouth

Mostly cloudy in the Evening, then clearing. Lows in the lower 40s. South Winds 5 to 10 Mph, becoming southwest after midnight.

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Merrill Temperature Statistics

March Temperature

Le Mars Municipal Airport (4.3 miles)

  • Lowest 16 March, 2026

    5 °F

  • Average March

    37.3 °F

  • Highest 8 March, 2026

    73.4 °F

Climate (2021–Present)

Le Mars Municipal Airport (4.3 miles)

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  • Average Low 2021–2026

    37.7 °F

  • Average 2021–2026

    48.9 °F

  • Average High 2021–2026

    60.1 °F
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