Fairgrounds Weather Forecast
- 54
- 73
Mostly Cloudy
- 55
- 66
Rain Showers
- 55
- 65
Rain Showers Likely
- 54
- 70
Chance Thunderstorms
- 54
- 73
Slight Chance Thunderstorms
- 50
- 72
Partly Sunny
- 50
- 70
Mostly Sunny
Today 17 Sep Pennington
Mostly cloudy. Highs in the mid 70s. North Winds around 5 Mph.
Tonight 17 Sep Pennington
Mostly cloudy. Lows in the mid 50s. Northeast Winds 5 to 15 Mph.
Fairgrounds Temperature Statistics
September Temperature
Thief River Falls, Thief River Falls Regional Airport (3.7 miles)
Lowest 7 September, 2025
35.1 °FAverage September
59.6 °FHighest 14 September, 2025
81 °F
Climate (2020–Present)
Thief River Falls, Thief River Falls Regional Airport (3.7 miles)
Average Low 2020–2025
32.1 °FAverage 2020–2025
41.3 °FAverage High 2020–2025
50.1 °F