Flat Lake Weather Forecast
- 80
- 89
Rain Showers Likely
- 80
- 89
Chance Thunderstorms
- 80
- 90
Chance Thunderstorms
- 79
- 91
Chance Thunderstorms
- 78
- 91
Chance Thunderstorms
Today 12 Sep Lower Vermilion
Mostly sunny with a chance of Showers and Thunderstorms. Humid with Highs around 90. Southwest Winds 5 to 10 Mph. Chance of rain 50 percent.
Tonight 12 Sep Lower Vermilion
Partly cloudy in the Evening, then clearing. Humid with Lows in the upper 70s. South Winds around 5 Mph.
Flat Lake Temperature Statistics
September Temperature
Abbeville Chris Crusta Memorial Airport (39.1 miles)
Lowest 6 September, 2026
71.8 °FAverage September
81 °FHighest 7 September, 2026
95.5 °F
Climate (2021–2026)
Abbeville Chris Crusta Memorial Airport (39.1 miles)
Average Low 2021–2026
60.1 °FAverage 2021–2026
69.3 °FAverage High 2021–2026
79.6 °F