Lafourche Parish Climate
Lafourche Parish, Louisiana
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
69.8°F
Annual Precip
68.9"
Annual Snowfall
0.0"
Extreme Heat Days
66
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
9b
Minimum winter temperature range for plant survival
7,389
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Lafourche Parish
Climate Verdict
Lafourche Parish has a warm, averaging 69.8°F year-round, very wet conditions receiving 68.9 inches of precipitation annually, significant summer heat with 65.85 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 54.0°F. summers are hot, with July averaging 83.0°F. The climate is remarkably stable year-round, with only a 29°F difference between January and July.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Lafourche Parish. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Lafourche Parish closely matches the Louisiana statewide average temperature of 67.0°F, it is also noticeably wetter, receiving 8.1 inches more precipitation than the state average, the county experiences 17.816346153846112 fewer extreme heat days than the state average.
Climate Profile
About Lafourche Parish Weather
Extreme Subtropical Warmth and Rain
Lafourche Parish averages 69.8°F annually, which is significantly higher than the national median. It is also one of the wettest places in the U.S., receiving 68.9 inches of precipitation per year.
Louisiana's Warmest and Wettest
The parish temperature of 69.8°F sits well above the state average of 67.0°F. Furthermore, its 68.9 inches of rainfall far surpasses the Louisiana state average of 60.8 inches.
Matching the New Orleans Area
Lafourche Parish shares a nearly identical temperature profile with neighboring Jefferson Parish at roughly 69.7°F. However, Lafourche is wetter, receiving about 4.6 inches more rain annually than its neighbor.
Mild Winters and 66 Heat Days
Despite its high average temp, the parish has 66 days over 90°F, which is lower than inland parishes due to Gulf breezes. Winters are exceptionally mild with an average January temperature of 54.0°F and no snow.
Prepare for Heavy Rainfall
With 68.9 inches of rain, residents must prioritize flood mitigation and high-quality waterproof gear. The humidity is constant, so dehumidifiers are often necessary to protect indoor air quality and property.
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.