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
Opelika experiences a recorded average high-temperature of a still tropical 86°F (30°C) in September, closely aligned with August's 90.3°F (32.4°C). Throughout September, the temperature falls to an average low of 66.7°F (19.3°C).Heat index
Throughout September, the heat index is estimated at a fiery hot 96.8°F (36°C). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.The standards for the heat index are set for locations in shade and under light breezes. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is achieved by amalgamating air temperature with the relative humidity readings. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.
Humidity
In September, the average relative humidity in Opelika is 72%.Rainfall
September is the month with the least rainfall. Rain falls for 14.1 days and accumulates 2.01" (51mm) of precipitation.Snowfall
April through November are months without snowfall.Daylight
In September, the average length of the day in Opelika is 12h and 22min.On the first day of September, sunrise is at 6:16 am and sunset at 7:05 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 6:27 pm CDT.
Sunshine
In September, the average sunshine in Opelika is 8.6h.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 rays for the average person.Note: A typical high UV index of 6 in September suggests the following recommendations:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Opelika have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Opelika have in September?
How high is the UV index in September?
Average temperature in September
Opelika, AL
- Average high temperature in September: 86°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (54.1°F).
- Average low temperature in September: 66.7°F
The months with the highest average low temperature are July and August (71.2°F).
The coldest month (with the lowest average low temperature) is January (37.4°F).
Average pressure in September
Opelika, AL
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Opelika, AL
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is January (7.7mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in September
Opelika, AL
- Average humidity in September: 72%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Opelika, AL
- Average rainfall in September: 2.01"
The wettest months (with the highest rainfall) are August and December (4.06").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in September
Opelika, AL
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is July (22.5 days).
The month with the least rainy days is November (7.8 days).
Average snowfall in September
Opelika, AL
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.31").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Opelika, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.8 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
Opelika, AL
- 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: 8h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in September
Opelika, AL
- Average sunshine days in September: 14 days
The months with the most sunshine days are October and November (20.5 days).
The month with the least sunshine days is July (6.5 days).
Average UV index in September
Opelika, AL
- Average UV index in September: 6
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Opelika, AL
- Average cloud cover in September: 31
The month with the most cloud cover is December (Cloud cover 45).
The month with the least cloud cover is October (Cloud cover 30).
Average visibility in September
Opelika, 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).
Opelika, Alabama, USA
Weather forecast for your location
2. Allow the app to use your location
