Barnum Lake Weather Forecast
- 64
- 79
Chance Thunderstorms
- 64
- 76
Rain Showers Likely
- 59
- 81
Chance Rain Showers
- 50
- 71
Mostly Cloudy
Today 6 Sep North Cass
Mostly cloudy. A chance of Showers in the Morning, then a slight chance of Showers and Thunderstorms in the afternoon. Humid with Highs in the upper 70s. Southeast Winds 5 to 10 Mph. Chance of rain 50 percent.
Tonight 6 Sep North Cass
Mostly cloudy. Near steady temperature in the lower 60s. Southeast Winds around 5 Mph.
Barnum Lake Temperature Statistics
September Temperature
Longville, Longville Municipal Airport (5.6 miles)
Lowest 2 September, 2026
51.1 °FAverage September
67 °FHighest 3 September, 2026
84 °F
Climate (2021–2026)
Longville, Longville Municipal Airport (5.6 miles)
Average Low 2021–2026
31.2 °FAverage 2021–2026
41.6 °FAverage High 2021–2026
51.2 °F