Straight Lake Wilderness State Park Weather Forecast

    • 45
    • 62

    Mostly Cloudy

    • 40
    • 63

    Mostly Cloudy

    • 40
    • 66

    Sunny

    • 44
    • 68

    Mostly Sunny

    • 48
    • 67

    Mostly Cloudy

    • 50
    • 71

    Partly Sunny

Today 20 Sep Polk

Increasing Clouds. Highs in the mid 60s. Northeast Winds 5 to 15 Mph.

Tonight 20 Sep Polk

Cloudy. Lows in the mid 40s. Northeast Winds 5 to 10 Mph.

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Straight Lake Wilderness State Park Temperature Statistics

September Temperature

Siren, Burnett County Airport (14.9 miles)

  • Lowest 14 September, 2026

    35.6 °F

  • Average September

    65 °F

  • Highest 3 September, 2026

    88.2 °F

Climate (2021–2026)

Siren, Burnett County Airport (14.9 miles)

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  • Average Low 2021–2026

    33.1 °F

  • Average 2021–2026

    44.1 °F

  • Average High 2021–2026

    53.9 °F
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