September weather forecastHoover, AL
September
Weather in September
The onset of fall in September brings about a notable change in Hoover, Alabama's climate. The decrease in temperature is evident with the highest averages falling to 85.1°F (29.5°C). Lowering temperatures and reduction in daylight hours to 12.4 on average indicate towards a transition from harsh summer to subtle autumn. Soothing chill in the morning and evenings adds to the crispness of the moniker "Fall".Temperature
As Hoover steps into September, the average high-temperature is measured at a moderately hot 85.1°F (29.5°C), displaying minor differences from August's 90.1°F (32.3°C). Hoover's temperature tends to fall to an average low of 66°F (18.9°C) during the nights of September.Heat index
During September, the heat index is appraised at a tropical 93.2°F (34°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.It is important to note that the heat index values are for shaded areas and light wind scenarios. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', gives an indication of how one might feel in terms of heat after considering humidity. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humidity
In September, the average relative humidity in Hoover is 72%.Rainfall
In September, the rain falls for 11.8 days. Throughout September, 1.06" (27mm) of precipitation is accumulated. In Hoover, during the entire year, the rain falls for 146.7 days and collects up to 18.94" (481mm) of precipitation.Snowfall
April through November are months without snowfall.Daylight
In Hoover, the average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 6:21 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 6:32 pm CDT.
Sunshine
The average sunshine in September is 8.9h.UV index
In Hoover, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Hoover, AL
- Average high temperature in September: 85.1°F
The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is January (51.3°F).
- Average low temperature in September: 66°F
The month with the highest average low temperature is July (71.4°F).
The coldest month (with the lowest average low temperature) is January (36°F).
Average pressure in September
Hoover, AL
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).
Average wind speed in September
Hoover, AL
- Average wind speed in September: 4.9mph
The windiest months (with the highest average wind speed) are February and March (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in September
Hoover, AL
- Average humidity in September: 72%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Hoover, AL
- Average rainfall in September: 1.06"
The wettest month (with the highest rainfall) is August (2.24").
The driest month (with the least rainfall) is October (1.02").
Average rainfall days in September
Hoover, AL
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is July (18.9 days).
The month with the least rainy days is November (7.3 days).
Average snowfall in September
Hoover, AL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.24").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Hoover, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Hoover, AL
- Average daylight in September: 12h and 24min
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 54min
The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Hoover, AL
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is July (9.4 days).
Average UV index in September
Hoover, AL
- Average UV index in September: 5
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Hoover, AL
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June, September and October (Cloud cover 30).
Average visibility in September
Hoover, 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).
