St. Landry Parish Climate
St. Landry Parish, Louisiana
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
68.0°F
Annual Precip
61.4"
Annual Snowfall
0.0"
Extreme Heat Days
102
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
9a
Minimum winter temperature range for plant survival
6,862
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: St. Landry Parish
Climate Verdict
St. Landry Parish has a warm, averaging 68.0°F year-round, very wet conditions receiving 61.4 inches of precipitation annually, significant summer heat with 102.15 days annually above 90°F, virtually no measurable snowfall. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are mild, with January temperatures averaging 51.2°F. summers are hot, with July averaging 82.3°F. The 31°F seasonal variation provides noticeable but manageable change. January is typically the coldest month and August the warmest.
Outdoor & Gardening Guidance
Summer outdoor activities should be planned for early morning or evening to avoid extreme heat.
Regional Context
St. Landry Parish closely matches the Louisiana statewide average temperature of 67.0°F, the county experiences 18.4836538461539 more extreme heat days than the state average.
Climate Profile
About St. Landry Parish Weather
Warmer than the national average
St. Landry Parish records an average annual temperature of 68.0°F, significantly higher than the national median of approximately 55°F. This humid subtropical climate stays warm throughout the year with very little variation in cold extremes.
Slightly warmer than state norms
The parish's 68.0°F annual average sits one full degree above the Louisiana state average of 67.0°F. While Louisiana is famously warm, St. Landry typically experiences more intense heat than many of its northern peers.
Climate matching the Acadiana region
St. Landry is nearly identical in temperature to neighboring St. Martin Parish, which averages 67.8°F. However, St. Landry receives slightly less rain, recording 61.4 inches annually compared to St. Martin’s 66.6 inches.
A long, grueling summer season
Summer averages reach a stifling 81.8°F, fueled by a staggering 102 days per year where temperatures hit 90°F or higher. Winters are mild with a 53.2°F average and absolutely no recorded annual snowfall.
Prepare for heat and humidity
Residents must maintain high-efficiency HVAC systems to handle over 100 extreme heat days each year. With 61.4 inches of annual rainfall, heavy-duty gutter systems and rain gear are essential for local storms.
Frequently Asked Questions
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Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.