Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Prien observes a minor difference in average high-temperatures between August's 91.2°F (32.9°C) and September's 87.4°F (30.8°C). Prien witnesses a consistent average low-temperature of 71.8°F (22.1°C) throughout September.Heat index
September's mean heat index is computed to be a very hot 102.2°F (39°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.Given the heat index, its values are aligned with shaded sites and gentle winds. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', shows a temperature sensation when both heat and moisture conditions are combined. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are essentially critical for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.
Humidity
In September, the average relative humidity is 77%.Rainfall
In Prien, Louisiana, in September, it is raining for 15.5 days, with typically 1.93" (49mm) of accumulated precipitation. In Prien, during the entire year, the rain falls for 151.1 days and collects up to 20.91" (531mm) of precipitation.Snowfall
February through December are months without snowfall.Daylight
In Prien, the average length of the day in September is 12h and 20min.On the first day of the month, sunrise is at 6:50 am and sunset at 7:35 pm. On the last day of September, sunrise is at 7:06 am and sunset at 6:59 pm CDT.
Sunshine
In September, the average sunshine is 9.8h.UV index
In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: During September, 6 as the daily maximum UV index converts into the following advice:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
What time are sunrise and sunset in September in Prien?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Prien, LA
- Average high temperature in September: 87.4°F
The warmest month (with the highest average high temperature) is August (91.2°F).
The month with the lowest average high temperature is January (59.5°F).
- Average low temperature in September: 71.8°F
The month with the highest average low temperature is July (76.1°F).
The coldest month (with the lowest average low temperature) is January (45.1°F).
Average pressure in September
Prien, LA
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.94"Hg).
Average wind speed in September
Prien, LA
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in September
Prien, LA
- Average humidity in September: 77%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Prien, LA
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is August (3.46").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days in September
Prien, LA
- Average rainfall days in September: 15.5 days
The month with the highest number of rainy days is August (18.7 days).
The month with the least rainy days is November (8.6 days).
Average snowfall in September
Prien, LA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Prien, LA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Prien, LA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 9h and 5min
The months with the most sunshine are June, July and August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
Prien, LA
- Average sunshine days in September: 12.1 days
The month with the most sunshine days is January (20.1 days).
The month with the least sunshine days is August (9.9 days).
Average UV index in September
Prien, LA
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Prien, LA
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 25).
Average visibility in September
Prien, LA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Prien, Louisiana, USA
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