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
With the advent of September, Hartselle experiences an average high-temperature of a warm 83.3°F (28.5°C), mirroring a close resemblance to the previous month. Hartselle usually reports an average low-temperature of 64°F (17.8°C) during the month of September.Heat index
The heat index value for September is calculated to be a hot 89.6°F (32°C). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.Heat index guidelines indicate values are for light wind scenarios and shaded regions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Humidity
The average relative humidity in September is 74%.Rainfall
In Hartselle, in September, during 13.7 rainfall days, 2.48" (63mm) of precipitation is typically accumulated. Throughout the year, there are 173 rainfall days, and 41.38" (1051mm) of precipitation is accumulated.Snowfall
In Hartselle, Alabama, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 23min.On the first day of September in Hartselle, sunrise is at 6:21 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 6:32 pm CDT.
Sunshine
In September, the average sunshine in Hartselle is 8.8h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: A daily high UV index of 5 in September leads to these guidelines:
Undertake precautions - Obligation exists to protect against skin and eye damage. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Frequently asked questions
How hot is September in Hartselle?
What is the average humidity in September in Hartselle?
How much does it rain in Hartselle in September?
When it does not snow in Hartselle?
How many hours of daylight does Hartselle have in September?
When is the sunrise / sunset in September in Hartselle?
How many hours of sunshine does Hartselle have in September?
How high is the UV index in September in Hartselle?
Average temperature in September
Hartselle, AL
- Average high temperature in September: 83.3°F
The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is January (48.7°F).
- Average low temperature in September: 64°F
The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (33.6°F).
Average pressure in September
Hartselle, AL
- Average pressure in September: 30.02"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
Hartselle, AL
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is February (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in September
Hartselle, AL
- Average humidity in September: 74%
The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Hartselle, AL
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is December (4.25").
The driest month (with the least rainfall) is November (2.24").
Average rainfall days in September
Hartselle, AL
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is July (19.5 days).
The month with the least rainy days is November (9.7 days).
Average snowfall in September
Hartselle, AL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.79").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Hartselle, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Hartselle, AL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
Hartselle, AL
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is October (19.4 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in September
Hartselle, 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
Hartselle, AL
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in September
Hartselle, 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).
Hartselle, Alabama, USA
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