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
September heralds a minor drop in average high-temperature, sliding from August's hot 91°F (32.8°C) to a moderately hot 84.2°F (29°C). Alma encounters an average low-temperature of 63.1°F (17.3°C) during September nights.Heat index
Throughout September, the heat index is computed to be a hot 91.4°F (33°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.Take note of the fact that heat index values are based on shaded circumstances with light airflows. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', reflects the feeling of heat when considering both air temperature and humidity. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important 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.
Humidity
In Alma, the average relative humidity in September is 72%.Rainfall
In Alma, in September, during 12.1 rainfall days, 3.03" (77mm) of precipitation is typically accumulated. Throughout the year, there are 146.1 rainfall days, and 36.3" (922mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in Alma.Daylight
In September, the average length of the day is 12h and 23min.On the first day of September, sunrise is at 6:49 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 7:01 pm CDT.
Sunshine
The average sunshine in September is 9.2h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index, 5 during September, leads to the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
How much does it rain in Alma in September?
When it does not snow?
What is the average length of the day in September in Alma?
What time are sunrise and sunset in September?
How many hours of sunshine does Alma have in September?
What is the UV index intensity in September?
Average temperature in September
Alma, AR
- Average high temperature in September: 84.2°F
The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is January (47.7°F).
- Average low temperature in September: 63.1°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (30.9°F).
Average pressure in September
Alma, AR
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Alma, AR
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is July (4.7mph).
Average humidity in September
Alma, AR
- Average humidity in September: 72%
The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are July and August (70%).
Average rainfall in September
Alma, AR
- Average rainfall in September: 3.03"
The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is January (2.13").
Average rainfall days in September
Alma, AR
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (8.5 days).
Average snowfall in September
Alma, AR
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.75").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Alma, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.6 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Alma, AR
- 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 48min).
- Average sunshine in September: 9h and 1min
The months with the most sunshine are July and August (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in September
Alma, AR
- Average sunshine days in September: 16 days
The month with the most sunshine days is January (20.6 days).
The month with the least sunshine days is May (13.1 days).
Average UV index in September
Alma, AR
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Alma, AR
- Average cloud cover in September: 29
The months with the most cloud cover are February and March (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Alma, AR
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Alma, Arkansas, USA
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