St. John the Baptist Parish, LA Climate

St. John the Baptist, LA County experiences a subtropical climate with hot and humid summers, mild winters, and plenty of precipitation throughout the year. Temperatures in the summer months range from the high 80s to mid 90s Fahrenheit, while in winter temperatures can drop to the 40s or even lower. Rainfall is spread relatively evenly throughout the year, with most of it coming between April and October. Humidity is very high during these months due to St. John's proximity to Lake Pontchartrain; during the summer months this humidity can be uncomfortable for those not used to it.

St. John the Baptist County, Louisiana gets 63 inches of rain, on average, per year. The US average is 38 inches of rain per year.

St. John the Baptist 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. John the Baptist County. The US average is 205 sunny days.

St. John the Baptist County gets some kind of precipitation, on average, 100 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 43
Rain: averages 63 inches of rain a year
Snow: averages 0 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for St. John the Baptist Parish is 6.9 (10=best), which means it is more comfortable than most places in Louisiana.

2.8 Summer - 8.2 Winter

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

Climate	St. John the Baptist, Louisiana	United States
	63.1 in.	38.1 in.
	0.0 in.	27.8 in.
	99.9 days	106.2 days
	219 days	205 days
	91.3°	85.8°
	43.1°	21.7°
	6.9	7
	5.8	4.3
	5 ft.	2443 ft.

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.

August is the hottest month for St. John the Baptist Parish with an average high temperature of 91.3°, which ranks it as cooler than most places in Louisiana. In St. John the Baptist Parish, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for St. John the Baptist Parish are April, October and November.

In St. John the Baptist Parish, there are 71.6 days annually when the high temperature is over 90°, which is cooler than most places in Louisiana.

January has the coldest nighttime temperatures for St. John the Baptist Parish with an average of 43.1°. This is warmer than most places in Louisiana.

In St. John the Baptist Parish, there are 9.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Louisiana.

In St. John the Baptist 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. John the Baptist 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.

June is the wettest month in St. John the Baptist Parish with 8.1 inches of rain, and the driest month is November with 4.1 inches. The wettest season is Autumn with 33% of yearly precipitation and 21% occurs in Winter, which is the driest season. The annual rainfall of 63.1 inches in St. John the Baptist Parish means that it is wetter than most places in Louisiana.

July is the rainiest month in St. John the Baptist Parish with 12.4 days of rain, and April is the driest month with only 5.6 rainy days. There are 99.9 rainy days annually in St. John the Baptist Parish, which is about average compared to other places in Louisiana. The rainiest season is Autumn when it rains 36% of the time and the driest is Summer with only a 19% chance of a rainy day.

There is rarely any recorded snowfall in St. John the Baptist Parish, ranking it as one of the least snowy places in Louisiana. Any measurable snowfall is a rare occurance in St. John the Baptist Parish.

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