Historical weather data, all-time temperature records, and monthly climate averages for Youngsville, LA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Youngsville sits squarely in spring transition territory — 133 years of data put the average high at 76° and the low at 56°. The date has seen some wild swings, from a toasty 87° back in 1893 to a jarring 33° low in 1920. Rain is unlikely today, with only an 18% chance of precipitation.
Youngsville plays in the extremes — the all-time high of 110° in August 2023 and the all-time low of 4° in January 2025 give this place a 106-degree range of recorded temperatures. Flooding is the bigger story here: a single day in August 2016 dropped 10.4 inches of rain, a reminder of how seriously South Louisiana takes its storms.
Summer owns Youngsville — highs climb to 92° by late July and stay there through August, making that stretch the hottest of the year. If you're heat-averse, January is your window, with average highs around 62°. The wettest stretch falls in mid-July, averaging over 1.6 inches in a single week, so pack accordingly if you're visiting in summer.