Armstrong Lake Weather Forecast

    • 55
    • 77

    Becoming Sunny

    • 61
    • 82

    Partly Sunny

    • 64
    • 83

    Partly Sunny

    • 71
    • 97

    Hot

    • 70
    • 100

    Hot

    • 65
    • 96

    Mostly Sunny

Today 22 Jul Blue Earth

Sunny. Highs in the mid 70s. North Winds up to 10 Mph.

Tonight 22 Jul Blue Earth

Clear. Lows in the mid 50s. North Winds up to 5 Mph shifting to the south after midnight.

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Armstrong Lake Temperature Statistics

July Temperature

New Ulm Municipal Airport (13.7 miles)

  • Lowest 10 July, 2026

    62.6 °F

  • Average July

    77.2 °F

  • Highest 17 July, 2026

    93.2 °F

Climate (2021–2026)

New Ulm Municipal Airport (13.7 miles)

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  • Average Low 2021–2026

    37.6 °F

  • Average 2021–2026

    47.4 °F

  • Average High 2021–2026

    57 °F
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