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
As September arrives, Princeton's weather displays a minor decrease in high-temperatures, transitioning from August's very hot 95.4°F (35.2°C) to a tropical 88.9°F (31.6°C). During September, Princeton records a consistent average nighttime temperature of 68°F (20°C).Heat index
The heat index value for September is calculated to be a sweltering 102.2°F (39°C). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.Consider that heat index readings are for situations in the shade and light wind. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.
Humidity
The average relative humidity in September in Princeton is 69%.Rainfall
In Princeton, during September, the rain falls for 11.7 days and regularly aggregates up to 1.97" (50mm) of precipitation. In Princeton, Louisiana, during the entire year, the rain falls for 149.4 days and collects up to 36.34" (923mm) of precipitation.Snowfall
April through October are months without snowfall in Princeton.Daylight
The average length of the day in September in Princeton is 12h and 22min.On the first day of September in Princeton, sunrise is at 6:49 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:59 pm CDT.
Sunshine
The average sunshine in September is 9.6h.UV index
In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index, 6 during September, leads to the following recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Frequently asked questions
Is it hot in Princeton during September?
What is the average humidity in September in Princeton?
How much does it rain in Princeton in September?
When it does not snow in Princeton?
What is the average length of the day in September in Princeton?
When are sunrise and sunset in September in Princeton?
How many hours of sunshine does Princeton have in September?
What is the UV index reading in September in Princeton?
Average temperature in September
Princeton, LA
- Average high temperature in September: 88.9°F
The warmest month (with the highest average high temperature) is August (95.4°F).
The month with the lowest average high temperature is January (54°F).
- Average low temperature in September: 68°F
The month with the highest average low temperature is July (73.9°F).
The coldest month (with the lowest average low temperature) is January (38.3°F).
Average pressure in September
Princeton, LA
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Princeton, LA
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest months (with the lowest average wind speed) are August and September (5.2mph).
Average humidity in September
Princeton, LA
- Average humidity in September: 69%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is August (66%).
Average rainfall in September
Princeton, LA
- Average rainfall in September: 1.97"
The wettest month (with the highest rainfall) is April (4.25").
The driest month (with the least rainfall) is July (1.85").
Average rainfall days in September
Princeton, LA
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is March (14.7 days).
The month with the least rainy days is October (9.5 days).
Average snowfall in September
Princeton, LA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.55").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Princeton, LA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Princeton, LA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 5h and 0min).
Average sunshine days in September
Princeton, LA
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is February (12.9 days).
Average UV index in September
Princeton, LA
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Princeton, LA
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Princeton, LA
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Princeton, Louisiana, USA
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