Washington Parish Climate
Washington Parish, Louisiana
Avg Annual Temp
67.3°F
Annual Precip
63.8"
Annual Snowfall
0.1"
Extreme Heat Days
88.4
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Washington Parish Weather
High Humidity and Warm Annual Averages
Washington Parish records an annual average temperature of 67.3°F, much warmer than the national median. This humid subtropical region experiences heavy rainfall and consistent warmth throughout the year. It represents the quintessential climate of the eastern Florida Parishes.
Warmer Than the Louisiana Baseline
With an average of 67.3°F, Washington Parish is slightly warmer than the Louisiana state average of 67.0°F. It ranks among the warmer parishes in the state, driven by high summer humidity and a lack of cold air intrusion. It maintains a very consistent temperature profile compared to its neighbors.
Extraordinary Rainfall Compared to State Norms
The parish receives 63.8 inches of annual precipitation, surpassing the state average of 60.8 inches. It shares similar heat patterns with Vernon Parish, but Washington is significantly wetter, receiving about 4 inches more rain annually. This makes the region particularly lush but prone to damp conditions.
Eighty-Eight Days of Extreme Summer Heat
The local climate features 88 days per year where temperatures exceed 90°F, peaking in July with an average of 82.3°F. Winters are mild and wet, with a January average of 50.0°F and only 0.1 inches of snow. The summer average of 81.5°F is nearly 30 degrees higher than the winter average of 52.2°F.
Gear Up for Moisture and Humidity
Dehumidifiers and high-quality HVAC filters are necessary to combat the high humidity and 63.8 inches of rain. Residents should prepare for 88 days of extreme heat by ensuring outdoor structures have adequate shade. Winter gear requirements are minimal, as the average winter temperature remains a comfortable 52.2°F.
Frequently Asked Questions
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.