Thornton Lake Weather Forecast

    • 62
    • 81

    Chance Thunderstorms

    • 60
    • 84

    Mostly Sunny

    • 58
    • 77

    Chance Thunderstorms

    • 53
    • 70

    Chance Thunderstorms

    • 50
    • 64

    Slight Chance Thunderstorms

    • 50
    • 64

    Mostly Cloudy

Today 15 Sep South Aitkin

Patchy fog in the morning. Mostly cloudy with a slight chance of Showers in the Morning, then mostly sunny with a chance of Showers and Thunderstorms in the afternoon. Hot with Highs in the lower 80s. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 30 percent.

Tonight 15 Sep South Aitkin

Mostly cloudy with a slight chance of Showers and Thunderstorms. Patchy fog. Near steady temperature in the mid 60s. Southeast Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Thornton Lake Temperature Statistics

September Temperature

Aitkin Municipal Airport - Steve Kurtz Field (8.7 miles)

  • Lowest 7 September, 2025

    33.8 °F

  • Average September

    55.7 °F

  • Highest 1 September, 2025

    75.2 °F

Climate (2020–Present)

Aitkin Municipal Airport - Steve Kurtz Field (8.7 miles)

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  • Average Low 2020–2025

    31.5 °F

  • Average 2020–2025

    42.8 °F

  • Average High 2020–2025

    52.9 °F
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