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 reveals a small adjustment in temperature, transitioning from an average high of a tropical 94.6°F (34.8°C) in August to a still hot 88.7°F (31.5°C). Gilliam experiences a significant contrast between daily highs and an average nighttime temperature of 67.1°F (19.5°C) during September.Heat index
The heat index in September is estimated at a torrid 102.2°F (39°C). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.Take into consideration that the heat index values are calculated for shade and light wind conditions. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'feels like', binds temperature metrics with humidity values to give a sense of the actual warmth. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.
Humidity
In September, the average relative humidity is 69%.Rainfall
The month with the least rainfall is September, when the rain falls for 11.4 days and typically collects 1.85" (47mm) of precipitation.Snowfall
April through November are months without snowfall in Gilliam.Daylight
In September, the average length of the day in Gilliam is 12h and 22min.On the first day of the month, sunrise is at 6:50 am and sunset at 7:39 pm. On the last day of September, sunrise is at 7:09 am and sunset at 7:00 pm CDT.
Sunshine
In Gilliam, the average sunshine in September is 9.4h.UV index
In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.Note: The daily maximum UV index of 6 in September interprets into the following advice:
Ward off overexposure. Defence against solar harm is crucial. 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. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Frequently asked questions
How hot is it in Gilliam in September?
What is the average humidity in September in Gilliam?
What is the driest month in Gilliam?
How much does it rain in Gilliam in September?
When it does not snow in Gilliam?
What is the average length of the day in September in Gilliam?
What time are sunrise and sunset in September in Gilliam?
How many hours of sunshine does Gilliam have in September?
How high is the UV index in September in Gilliam?
Average temperature in September
Gilliam, LA
- Average high temperature in September: 88.7°F
The warmest month (with the highest average high temperature) is July (95°F).
The month with the lowest average high temperature is January (53.6°F).
- Average low temperature in September: 67.1°F
The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (37.8°F).
Average pressure in September
Gilliam, 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
Gilliam, LA
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
Gilliam, 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 (67%).
Average rainfall in September
Gilliam, LA
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is April (4.84").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in September
Gilliam, LA
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is October (9.5 days).
Average snowfall in September
Gilliam, LA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.59").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Gilliam, LA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.3 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
Gilliam, 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 0min).
- Average sunshine in September: 9h and 2min
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 6min).
Average sunshine days in September
Gilliam, LA
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is October (19.9 days).
The month with the least sunshine days is February (12.8 days).
Average UV index in September
Gilliam, 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, February and December (UV index 3).
Average cloud cover in September
Gilliam, LA
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Gilliam, LA
- Average visibility in September: 6mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is February (5mi).
Gilliam, Louisiana, USA
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