Summerville Weather Forecast
- 63
- 90
Severe Tstms
- 65
- 88
Partly Sunny
- 64
- 91
Mostly Sunny
- 67
- 86
Mostly Sunny
- 71
- 90
Slight Chance Thunderstorms
- 71
- 90
Chance Thunderstorms
Today 20 May La Salle
Mostly cloudy in the Morning, then partly cloudy with a slight chance of Showers and Thunderstorms in the afternoon. Some Thunderstorms may be severe with damaging Winds, large Hail, and Tornadoes. Highs around 90. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 20 percent.
Tonight 20 May La Salle
Mostly clear. Cooler with Lows in the mid 60s. West Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming northwest after midnight.
Summerville Temperature Statistics
May Temperature
Alexandria Esler Regional Airport (25.5 miles)
Lowest 5 May, 2025
49.6 °FAverage May
71.8 °FHighest 15 May, 2025
90.6 °F
Climate (2020–Present)
Alexandria Esler Regional Airport (25.5 miles)
Average Low 2020–2025
56.3 °FAverage 2020–2025
67.1 °FAverage High 2020–2025
79.6 °F