Fairgrounds Weather Forecast

    • 43
    • 74

    Slight Chance Rain Showers

    • 36
    • 58

    Sunny

    • 43
    • 59

    Chance Rain Showers

    • 38
    • 59

    Slight Chance Rain Showers

    • 37
    • 57

    Mostly Sunny

    • 47
    • 59

    Partly Sunny

Today 30 Sep Pennington

Sunny. Highs in the mid 70s. West Winds around 10 Mph.

Tonight 30 Sep Pennington

Mostly clear. Lows in the mid 40s. Northwest Winds 5 to 15 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 13 September, 2026

    42.1 °F

  • Average September

    61.2 °F

  • Highest 5 September, 2026

    84.9 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    32 °F

  • Average 2021–2026

    41.1 °F

  • Average High 2021–2026

    49.8 °F
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