September weather forecastMathews, LA
September
Weather in September
September, the first month of the autumn in Mathews, is also a hot month, with temperature in the range of an average high of 86.7°F (30.4°C) and an average low of 73°F (22.8°C).Temperature
Mathews greets September with an average high-temperature of a still hot 86.7°F (30.4°C), marking a slight deviation from the preceding month. During September, Mathews experiences an average low-temperature of 73°F (22.8°C) at night.Heat index
In September, the average heat index is appraised at a sweltering 100.4°F (38°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.Realize that the values for the heat index are set for shaded places and light winds. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.
Humidity
The months with the highest humidity are February, July through September and December, with an average relative humidity of 78%.Rainfall
In September, the rain falls for 16.9 days. Throughout September, 1.57" (40mm) of precipitation is accumulated. Throughout the year, there are 156.9 rainfall days, and 21.42" (544mm) of precipitation is accumulated.Snowfall
February through December are months without snowfall.Daylight
In September, the average length of the day is 12h and 20min.On the first day of the month, sunrise is at 6:39 am and sunset at 7:24 pm. On the last day of September, in Mathews, sunrise is at 6:55 am and sunset at 6:48 pm CDT.
Sunshine
In Mathews, the average sunshine in September is 10.3h.UV index
The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.Note: In September, the maximum UV index of 6 translates into these guidelines:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mathews, LA
- Average high temperature in September: 86.7°F
The warmest month (with the highest average high temperature) is July (89.4°F).
The month with the lowest average high temperature is January (60.8°F).
- Average low temperature in September: 73°F
The month with the highest average low temperature is August (76.6°F).
The coldest month (with the lowest average low temperature) is January (46.9°F).
Average pressure in September
Mathews, LA
- Average pressure in September: 29.97"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 (29.97"Hg).
Average wind speed in September
Mathews, LA
- Average wind speed in September: 5.8mph
The windiest months (with the highest average wind speed) are February and April (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in September
Mathews, LA
- Average humidity in September: 78%
The months with the highest relative humidity are February, July, August, September and December (78%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Mathews, LA
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is July (4.02").
The driest month (with the least rainfall) is March (0.91").
Average rainfall days in September
Mathews, LA
- Average rainfall days in September: 16.9 days
The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is November (6.6 days).
Average snowfall days in September
Mathews, LA
- Average snowfall days in September: 0 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, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Mathews, LA
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in September: 10h and 18min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in September
Mathews, LA
- Average sunshine days in September: 10 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is July (6.2 days).
Average UV index in September
Mathews, 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
Mathews, LA
- Average cloud cover in September: 25
The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 24).
Average visibility in September
Mathews, 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).
