Fairmont Weather Forecast
- 71
- 92
Thunderstorms Likely
- 70
- 87
Thunderstorms
- 69
- 83
Rain Showers Likely
- 68
- 84
Chance Thunderstorms
- 67
- 85
Chance Thunderstorms
- 70
- 86
Chance Rain Showers
- 71
- 88
Mostly Sunny
Today 9 Aug Clark
Partly sunny. A slight chance of Showers and Thunderstorms late this Morning, then a chance of Showers with a slight chance of Thunderstorms this afternoon. Some Thunderstorms may produce heavy rainfall this afternoon. Hot with Highs in the lower 90s. South Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 30 percent. Heat index Values up to 102 this afternoon.
Tonight 9 Aug Clark
Mostly cloudy. A chance of Showers and Thunderstorms this Evening, then Showers and Thunderstorms likely after midnight. Some Thunderstorms may produce heavy rainfall. Lows in the lower 70s. Southeast Winds 5 to 10 Mph. Chance of rain 70 percent.
Fairmont Temperature Statistics
August Temperature
Keokuk Municipal Airport (26.7 miles)
Lowest 6 August, 2025
64.4 °FAverage August
75.8 °FHighest 6 August, 2025
86 °F
Climate (2020–Present)
Keokuk Municipal Airport (26.7 miles)
Average Low 2020–2025
43.3 °FAverage 2020–2025
52.9 °FAverage High 2020–2025
62.4 °F