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
September notes an average high-temperature of a still hot 88°F (31.1°C), subtly differing from August's 93°F (33.9°C). Prospect experiences a mean temperature of 68°F (20°C) during September nights.Heat index
During September, the heat index is computed to be a blisteringly hot 104°F (40°C). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.Always consider that heat index estimations are for light winds and places in the shade. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold great significance to children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.
Humidity
The average relative humidity in September is 76%.Rainfall
In Prospect, during September, the rain falls for 13 days and regularly aggregates up to 1.14" (29mm) of precipitation. In Prospect, during the entire year, the rain falls for 131.7 days and collects up to 14.29" (363mm) of precipitation.Snowfall
February through November are months without snowfall.Daylight
In Prospect, the average length of the day in September is 12h and 21min.On the first day of September, sunrise is at 6:46 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 6:55 pm CDT.
Sunshine
In Prospect, the average sunshine in September is 9.3h.UV index
The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.Note: The UV index of 6 during September translates into the following guidance:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
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 much does it rain in September?
When it does not snow?
How many hours of daylight does Prospect have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Prospect, LA
- Average high temperature in September: 88°F
The warmest months (with the highest average high temperature) are July and August (93°F).
The month with the lowest average high temperature is January (55.9°F).
- Average low temperature in September: 68°F
The months with the highest average low temperature are July and August (73°F).
The coldest month (with the lowest average low temperature) is January (40.3°F).
Average pressure in September
Prospect, LA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.95"Hg).
Average wind speed in September
Prospect, LA
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is February (7.1mph).
The calmest month (with the lowest average wind speed) is July (4.8mph).
Average humidity in September
Prospect, LA
- Average humidity in September: 76%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Prospect, LA
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is August (1.97").
The driest month (with the least rainfall) is November (0.75").
Average rainfall days in September
Prospect, LA
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is August (16.8 days).
The month with the least rainy days is November (6.5 days).
Average snowfall in September
Prospect, LA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.31").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Prospect, LA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.6 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
Prospect, LA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in September
Prospect, LA
- Average sunshine days in September: 14 days
The month with the most sunshine days is October (21.7 days).
The month with the least sunshine days is July (10.9 days).
Average UV index in September
Prospect, 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
Prospect, LA
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in September
Prospect, LA
- Average visibility in September: 5mi
The months with the highest visibility are January, June, October, November and December (6mi).
The months with the lowest visibility are February, March, April, May, July, August and September (5mi).
Prospect, Louisiana, USA
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