Terrebonne Parish Climate
Terrebonne Parish, Louisiana
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
69.6°F
Annual Precip
65.4"
Annual Snowfall
0.0"
Extreme Heat Days
76
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
9b
Minimum winter temperature range for plant survival
7,350
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Terrebonne Parish
Climate Verdict
Terrebonne Parish has a warm, averaging 69.6°F year-round, very wet conditions receiving 65.4 inches of precipitation annually, significant summer heat with 76.1 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 53.7°F. summers are hot, with July averaging 82.7°F. The climate is remarkably stable year-round, with only a 29°F difference between January and July. January is typically the coldest month and August the warmest.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Terrebonne Parish. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Terrebonne Parish closely matches the Louisiana statewide average temperature of 67.0°F, it is somewhat wetter than average for Louisiana.
Climate Profile
About Terrebonne Parish Weather
Deep South coastal warmth
Terrebonne Parish is one of the warmest spots in the U.S., with an annual average temperature of 69.6°F. Its location on the Gulf of Mexico creates a consistently warm and moist climate.
Exceeding Louisiana temperature norms
The parish’s 69.6°F average is well above the state norm of 67.0°F. Its coastal position keeps it warmer on average than almost any other parish in the state.
Similar to St. Mary
Terrebonne shares an identical 69.6°F average with neighboring St. Mary Parish. It is slightly wetter, however, receiving 65.4 inches of rain annually compared to St. Mary’s 61.9 inches.
Long summers and no snow
July averages 82.7°F, and the parish sees 76 days where the temperature exceeds 90°F. Winters are exceptionally mild, averaging 55.7°F with absolutely zero snowfall.
Water management is key
With 65.4 inches of annual rain and a 55.7°F average winter, heavy winter coats are rarely needed, but waterproof gear is essential. Homes require significant ventilation to combat the high humidity of the coastal summer.
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.