Fairgrounds Weather Forecast

    • 53
    • 77

    Increasing Clouds

    • 59
    • 77

    Mostly Cloudy

    • 60
    • 80

    Chance Rain Showers

    • 60
    • 80

    Mostly Cloudy

    • 59
    • 78

    Chance Rain Showers

    • 58
    • 79

    Chance Rain Showers

Today 10 Sep Pennington

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

Tonight 10 Sep Pennington

Mostly clear. Lows 45 to 50. Southeast Winds around 5 Mph.

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  • Temperature Real-Time

Fairgrounds Temperature Statistics

September Temperature

Thief River Falls, Thief River Falls Regional Airport (3.7 miles)

  • Lowest 7 September, 2025

    35.1 °F

  • Average September

    52.4 °F

  • Highest 1 September, 2025

    77 °F

Climate (2020–Present)

Thief River Falls, Thief River Falls Regional Airport (3.7 miles)

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  • Average Low 2020–2025

    32 °F

  • Average 2020–2025

    41.2 °F

  • Average High 2020–2025

    50 °F
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