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
Transitioning from August to September, Colyell observes an average high-temperature of a still hot 88.3°F (31.3°C), differing subtly from the previous month. In September, Colyell reports a consistent average low-temperature of 70°F (21.1°C) during the nights.Heat index
During September, the heat index is estimated at a blistering 105.8°F (41°C). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.When referencing the heat index, its values are suitable for shady environments and light breezes. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', shows a temperature sensation when both heat and moisture conditions are combined. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to 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. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.
Humidity
In September, the average relative humidity is 78%.Rainfall
In Colyell, during September, the rain falls for 17.3 days and regularly aggregates up to 2.68" (68mm) of precipitation. In Colyell, during the entire year, the rain falls for 176.5 days and collects up to 36.93" (938mm) of precipitation.Snowfall
February through November are months without snowfall.Daylight
The average length of the day in September is 12h and 20min.On the first day of the month, sunrise is at 6:40 am and sunset at 7:25 pm. On the last day of September, sunrise is at 6:56 am and sunset at 6:49 pm CDT.
Sunshine
The average sunshine in September is 9.5h.UV index
In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.Note: The UV index of 6 during September leads to these advisories:
Ward off overexposure. Defence against solar harm is crucial. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. 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 it in 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?
How many hours of sunshine does Colyell have in September?
What is the UV index reading in September?
Average temperature in September
Colyell, LA
- Average high temperature in September: 88.3°F
The warmest month (with the highest average high temperature) is July (92.3°F).
The month with the lowest average high temperature is January (58.8°F).
- Average low temperature in September: 70°F
The month with the highest average low temperature is August (74.3°F).
The coldest month (with the lowest average low temperature) is January (42.6°F).
Average pressure in September
Colyell, 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 (29.96"Hg).
Average wind speed in September
Colyell, LA
- Average wind speed in September: 4.7mph
The windiest months (with the highest average wind speed) are February and April (6.5mph).
The calmest month (with the lowest average wind speed) is July (4.3mph).
Average humidity in September
Colyell, LA
- Average humidity in September: 78%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Colyell, LA
- Average rainfall in September: 2.68"
The wettest months (with the highest rainfall) are July and August (4.37").
The driest month (with the least rainfall) is November (1.85").
Average rainfall days in September
Colyell, LA
- Average rainfall days in September: 17.3 days
The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is November (9 days).
Average snowfall in September
Colyell, LA
- Average snowfall in September: 0"
The months with the highest snowfall are January and December (0.16").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Colyell, LA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.3 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
Colyell, 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 3min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Colyell, LA
- Average sunshine days in September: 11.3 days
The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is July (7.8 days).
Average UV index in September
Colyell, LA
- Average UV index in September: 6
The months with the highest UV index are May, 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
Colyell, LA
- Average cloud cover in September: 32
The month with the most cloud cover is December (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in September
Colyell, LA
- Average visibility in September: 5mi
The months with the highest visibility are October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September and December (5mi).
Colyell, Louisiana, USA
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