St. Tammany Parish, LA Climate

The climate in St. Tammany, LA County is subtropical, with hot and humid summers and mild winters. Average summer temperatures range from the high 70s to high 90s, while winter temperatures typically range from the mid-40s to mid-60s. St. Tammany receives an average of 66 inches of rain each year, providing plenty of moisture for vegetation to thrive and contributing to its lush natural beauty. In addition, the area averages around 234 sunny days per year. The unique combination of warm weather and plentiful precipitation make it a paradise for outdoor enthusiasts looking for comfortable conditions all year round.

St. Tammany County, Louisiana gets 62 inches of rain, on average, per year. The US average is 38 inches of rain per year.

St. Tammany County averages 0 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 219 sunny days per year in St. Tammany County. The US average is 205 sunny days.

St. Tammany County gets some kind of precipitation, on average, 106 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 91 degrees
Winter Low: the January low is 40
Rain: averages 62 inches of rain a year
Snow: averages 0 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for St. Tammany Parish is 7.0 (10=best), which means it is more comfortable than most places in Louisiana.

3.6 Summer - 7.8 Winter

October, April and November are the most pleasant months in St. Tammany Parish, while July and August are the least comfortable months.

Climate	St. Tammany, Louisiana	United States
	Unlock	38.1 in.
	0.1 in.	Unlock
	Unlock	106.2 days
	219 days	Unlock
	91.0°	85.8°
	Unlock	21.7°
	7	Unlock
	Unlock	4.3
	46 ft.	Unlock

Climate

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for St. Tammany Parish with an average high temperature of 91.0°, which ranks it as cooler than most places in Louisiana. In St. Tammany Parish, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for St. Tammany Parish are April, October and May.

In St. Tammany Parish, there are 65.8 days annually when the high temperature is over 90°, which is one of the coolest places in Louisiana.

January has the coldest nighttime temperatures for St. Tammany Parish with an average of 39.6°. This is about average compared to other places in Louisiana.

In St. Tammany Parish, there are 23.9 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Louisiana.

In St. Tammany Parish, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Louisiana.

Humidity in St. Tammany Parish can be stifling in the summer, but pleasant for most of the year. The most uncomfortably humid months are July, August and June. The humid season runs from May-September and the least humid months are October-April.

July is the wettest month in St. Tammany Parish with 6.5 inches of rain, and the driest month is October with 3.9 inches. The wettest season is Autumn with 31% of yearly precipitation and 20% occurs in Winter, which is the driest season. The annual rainfall of 62.2 inches in St. Tammany Parish means that it is wetter than most places in Louisiana.

July is the rainiest month in St. Tammany Parish with 12.8 days of rain, and April is the driest month with only 6.3 rainy days. There are 105.9 rainy days annually in St. Tammany Parish, which is rainier than most places in Louisiana. The rainiest season is Autumn when it rains 34% of the time and the driest is Summer with only a 20% chance of a rainy day.

An annual snowfall of 0.1 inches in St. Tammany Parish means that it is snowier than most places in Louisiana. December is the snowiest month in St. Tammany Parish with 0.1 inches of snow, and no months of the year have significant snowfall.

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