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 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 marks a slight shift to an average high-temperature of a still hot 87.4°F (30.8°C) from August's 90.9°F (32.7°C). During September, Alma's temperature falls to a steady low-temperature average of 69.4°F (20.8°C).Heat index
Throughout September, the heat index is appraised at a scorching 104°F (40°C). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.Note that heat index values are valued for light wind and location in the shade. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. 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 particularly meaningful for babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.
Humidity
July through September and December, with an average relative humidity of 78%, are the most humid months.Rainfall
In Alma, in September, during 11.1 rainfall days, 0.55" (14mm) of precipitation is typically accumulated. Throughout the year, in Alma, there are 113.9 rainfall days, and 8.98" (228mm) of precipitation is accumulated.Snowfall
March through December are months without snowfall.Daylight
The average length of the day in September is 12h and 20min.On the first day of the month, sunrise is at 7:12 am and sunset at 7:58 pm. On the last day of September, sunrise is at 7:28 am and sunset at 7:21 pm EDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: A maximum UV index of 6 in September translates into the following recommendations:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the most humid month?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Alma have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Alma, FL
- Average high temperature in September: 87.4°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (60.6°F).
- Average low temperature in September: 69.4°F
The month with the highest average low temperature is August (73.4°F).
The coldest month (with the lowest average low temperature) is January (42.4°F).
Average pressure in September
Alma, FL
- 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, August and September (29.98"Hg).
Average wind speed in September
Alma, FL
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is January (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in September
Alma, FL
- Average humidity in September: 78%
The months with the highest relative humidity are July, August, September and December (78%).
The month with the lowest relative humidity is May (72%).
Average rainfall in September
Alma, FL
- Average rainfall in September: 0.55"
The wettest month (with the highest rainfall) is August (1.42").
The driest month (with the least rainfall) is March (0.35").
Average rainfall days in September
Alma, FL
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is August (15.9 days).
The month with the least rainy days is November (5 days).
Average snowfall days in September
Alma, FL
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Alma, FL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in September
Alma, FL
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is November (23.5 days).
The month with the least sunshine days is August (9.5 days).
Average UV index in September
Alma, FL
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in September
Alma, FL
- Average cloud cover in September: 35
The months with the most cloud cover are February and December (Cloud cover 41).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in September
Alma, FL
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are July, August and September (5mi).
Alma, Florida, USA
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