Grimhs Lake Weather Forecast

    • 43
    • 68

    Mostly Sunny

    • 50
    • 63

    Rain Showers

    • 42
    • 68

    Partly Sunny

    • 48
    • 68

    Slight Chance Rain Showers

    • 48
    • 71

    Mostly Sunny

    • 47
    • 71

    Partly Sunny

Today 13 Sep Polk

Mostly cloudy early in the morning then clearing. Highs in the upper 60s. Northwest Winds up to 10 Mph.

Tonight 13 Sep Polk

Clear. Lows in the lower 40s. Northwest Winds up to 5 Mph shifting to the southeast after midnight.

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Grimhs Lake Temperature Statistics

September Temperature

Siren, Burnett County Airport (9.3 miles)

  • Lowest 10 September, 2026

    45.9 °F

  • Average September

    69.8 °F

  • Highest 3 September, 2026

    88.2 °F

Climate (2021–2026)

Siren, Burnett County Airport (9.3 miles)

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  • Average Low 2021–2026

    33.1 °F

  • Average 2021–2026

    44.1 °F

  • Average High 2021–2026

    54 °F
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