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
In September, the average high-temperature is almost the same as in August - a still hot 86.9°F (30.5°C). In Opp, the average low-temperature is 68.9°F (20.5°C).Heat index
In September, the average heat index is computed to be a torrid 98.6°F (37°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like activity, pregnancy, metabolic differences, and differences in body mass, height, and shape affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.
Humidity
The average relative humidity in September is 74%.Rainfall
In Opp, during September, the rain falls for 17.2 days and regularly aggregates up to 2.64" (67mm) of precipitation. Throughout the year, in Opp, there are 178.2 rainfall days, and 36.1" (917mm) of precipitation is accumulated.Snowfall
March through December are months without snowfall.Daylight
In Opp, the average length of the day in September is 12h and 20min.On the first day of September, sunrise is at 6:20 am and sunset at 7:09 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 6:31 pm CDT.
Sunshine
The average sunshine in September in Opp is 9h.UV index
In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.Note: The average daily UV index of 6 in September transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
FAQ
What is the temperature in September in Opp?
What is the average humidity in September in Opp?
How many days does it rain in September in Opp?
When it does not snow in Opp?
What is the average length of the day in September in Opp?
What time are sunrise and sunset in September in Opp?
How long on average sun shines in September in Opp?
How high is the UV index in September in Opp?
Average temperature in September
Opp, AL
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is January (57.9°F).
- Average low temperature in September: 68.9°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 (40.8°F).
Average pressure in September
Opp, AL
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).
Average wind speed in September
Opp, AL
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is January (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Opp, AL
- Average humidity in September: 74%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Opp, AL
- Average rainfall in September: 2.64"
The wettest month (with the highest rainfall) is August (4.84").
The driest month (with the least rainfall) is November (2.09").
Average rainfall days in September
Opp, AL
- Average rainfall days in September: 17.2 days
The month with the highest number of rainy days is July (24.8 days).
The month with the least rainy days is November (8 days).
Average snowfall in September
Opp, AL
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.16").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Opp, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Opp, AL
- Average daylight in September: 12h and 20min
The month with the longest days is June (Average daylight: 14h and 9min).
The month with the shortest days is December (Average daylight: 10h and 9min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The months with the least sunshine are February and December (Average sunshine: 5h and 18min).
Average sunshine days in September
Opp, AL
- Average sunshine days in September: 10.3 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (4.4 days).
Average UV index in September
Opp, AL
- 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
Opp, AL
- Average cloud cover in September: 29
The month with the most cloud cover is December (Cloud cover 45).
The month with the least cloud cover is October (Cloud cover 27).
Average visibility in September
Opp, AL
- 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).
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