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 brings an average high-temperature of a still tropical 86.7°F (30.4°C), nearly identical to the preceding month. In the month of September, the average temperature in Coteau Holmes dips to an agreeable 70.7°F (21.5°C) during the night.Heat index
For most parts of September, the heat index is estimated at a fiery hot 102.2°F (39°C). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.Heat index values are typically calculated for conditions of shade and a light breeze. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', gives an indication of how one might feel in terms of heat after considering humidity. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. The body is at risk of dehydration and related complications when it fails to shed excessive heat.
Humidity
In September, the average relative humidity in Coteau Holmes is 79%.Rainfall
In Coteau Holmes, in September, during 14.7 rainfall days, 1.06" (27mm) of precipitation is typically accumulated. In Coteau Holmes, during the entire year, the rain falls for 139.5 days and collects up to 15.47" (393mm) of precipitation.Snowfall
In Coteau Holmes, snow does not fall in February through November.Daylight
In Coteau Holmes, the average length of the day in September is 12h and 20min.On the first day of the month, sunrise is at 6:44 am and sunset at 7:29 pm. On the last day of September, in Coteau Holmes, Louisiana, sunrise is at 7:00 am and sunset at 6:53 pm CDT.
Sunshine
The average sunshine in September in Coteau Holmes is 10h.UV index
The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 6 in September translates into this advice:
Prevent overexposure. Protection from the sun's harmful effects is needed. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Frequently asked questions
How hot does it get in Coteau Holmes in September?
What is the average humidity in September in Coteau Holmes?
How many days does it rain in September in Coteau Holmes?
When it does not snow in Coteau Holmes?
How many hours of daylight does Coteau Holmes have in September?
When are sunrise and sunset in September in Coteau Holmes?
How long on average sun shines in September in Coteau Holmes?
What is the UV index reading in September in Coteau Holmes?
Average temperature in September
Coteau Holmes, LA
- Average high temperature in September: 86.7°F
The warmest month (with the highest average high temperature) is August (90.1°F).
The month with the lowest average high temperature is January (59°F).
- Average low temperature in September: 70.7°F
The months with the highest average low temperature are July and August (75°F).
The coldest month (with the lowest average low temperature) is January (44.4°F).
Average pressure in September
Coteau Holmes, 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, August and September (29.96"Hg).
Average wind speed in September
Coteau Holmes, LA
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is February (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in September
Coteau Holmes, LA
- Average humidity in September: 79%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Coteau Holmes, LA
- Average rainfall in September: 1.06"
The wettest months (with the highest rainfall) are July and August (2.44").
The driest month (with the least rainfall) is March (0.63").
Average rainfall days in September
Coteau Holmes, LA
- Average rainfall days in September: 14.7 days
The month with the highest number of rainy days is August (19 days).
The month with the least rainy days is November (6.6 days).
Average snowfall in September
Coteau Holmes, LA
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Coteau Holmes, LA
- Average snowfall days in September: 0.1 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, October and November (0 days).
Average daylight in September /
Average sunshine in September
Coteau Holmes, 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: 10h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
Coteau Holmes, LA
- Average sunshine days in September: 11.4 days
The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is August (8.2 days).
Average UV index in September
Coteau Holmes, LA
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Coteau Holmes, LA
- Average cloud cover in September: 28
The months with the most cloud cover are February and December (Cloud cover 46).
The month with the least cloud cover is October (Cloud cover 25).
Average visibility in September
Coteau Holmes, 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).
Coteau Holmes, Louisiana, USA
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