Historical weather data, all-time temperature records, and monthly climate averages for Opelousas, LA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Opelousas typically feels like a proper Louisiana spring, with average highs of 77° and lows of 56°. The date has seen some wild swings, though — from a toasty 89° back in 1935 to a hard freeze at 31° in 1987. There's about a 1-in-5 chance of rain today, so keep an umbrella nearby.
Opelousas plays in the extremes: the all-time high of 107° in August 1935 and a bone-chilling 2° in February 1899 represent a 105-degree spread in recorded temperatures. The wettest single day on record dumped a staggering 16.07 inches on August 9, 1940 — and yes, 15 inches of snow once fell here in February 1895, a fact that still seems almost impossible for south-central Louisiana.
Opelousas runs hot for a long stretch — highs stay in the 90s from June through August, peaking during the first two weeks of August at an average 93°. If you're heat-averse, January is your best bet, with highs only reaching the low 60s. Interestingly, the wettest time of year is late December, not summer, averaging over 1.5 inches in that final holiday week.