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
The arrival of September records an average high-temperature of a still moderately hot 81°F (27.2°C), closely related to the 85.8°F (29.9°C) observed in August. An average low-temperature of 60.6°F (15.9°C) is anticipated throughout the nights in Stevenson during September.Heat index
September's heat index is calculated to be a tropical 86°F (30°C). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.Records show heat index calculations are tailored for shaded regions and mild winds. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', evaluates the perceived heat by adding the effect of moisture in the air. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Humidity
In Stevenson, the average relative humidity in September is 77%.Rainfall
In Stevenson, Alabama, during September, the rain falls for 14.7 days and regularly aggregates up to 2.87" (73mm) of precipitation. Throughout the year, there are 186.5 rainfall days, and 45.31" (1151mm) of precipitation is accumulated.Snowfall
In Stevenson, snow does not fall in May through October.Daylight
The average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:16 am and sunset at 7:09 pm. On the last day of September, in Stevenson, sunrise is at 6:37 am and sunset at 6:28 pm CDT.
Sunshine
The average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: In September, the maximum UV index of 5 suggests these recommendations:
Ensure safety - Sun damage prevention is strongly urged. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Frequently asked questions
What is the temperature in September in Stevenson?
What is the average humidity in September in Stevenson?
How much does it rain in Stevenson in September?
When it does not snow in Stevenson?
How many hours of daylight does Stevenson have in September?
What time are sunrise and sunset in September in Stevenson?
How long on average sun shines in September in Stevenson?
What is the UV index intensity in September in Stevenson?
Average temperature in September
Stevenson, AL
- Average high temperature in September: 81°F
The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (46.2°F).
- Average low temperature in September: 60.6°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (31.6°F).
Average pressure in September
Stevenson, AL
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Stevenson, AL
- Average wind speed in September: 4.4mph
The windiest month (with the highest average wind speed) is February (7mph).
The calmest months (with the lowest average wind speed) are July and August (4mph).
Average humidity in September
Stevenson, AL
- Average humidity in September: 77%
The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Stevenson, AL
- Average rainfall in September: 2.87"
The wettest month (with the highest rainfall) is July (4.76").
The driest month (with the least rainfall) is November (2.68").
Average rainfall days in September
Stevenson, AL
- Average rainfall days in September: 14.7 days
The month with the highest number of rainy days is July (21.6 days).
The month with the least rainy days is November (9.8 days).
Average snowfall in September
Stevenson, AL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.55").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Stevenson, AL
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (2.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Stevenson, AL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Stevenson, AL
- Average sunshine days in September: 13.7 days
The month with the most sunshine days is October (18.7 days).
The month with the least sunshine days is July (7.7 days).
Average UV index in September
Stevenson, AL
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Stevenson, AL
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 32).
Average visibility in September
Stevenson, AL
- Average visibility in September: 5mi
The months with the highest visibility are April, June, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September and December (5mi).
Stevenson, Alabama, USA
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