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
A moderate decline in average high-temperatures is noted in September, moving from a sweltering 95.5°F (35.3°C) in August to a hot 88°F (31.1°C). During September, the temperature is averaged to a low of 69.8°F (21°C) at night.Heat index
For September, the heat index is computed to be a torrid 98.6°F (37°C). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.Heat index's context suggests values are appropriate for shady areas and slight breezes. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', is a metric representing the sensation of warmth when air temperature and moisture come together. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.
Humidity
In September, the average relative humidity is 66%.Rainfall
In Alma, in September, it is raining for 14.7 days, with typically 2.48" (63mm) of accumulated precipitation. Throughout the year, in Alma, Texas, there are 140.9 rainfall days, and 31.5" (800mm) of precipitation is accumulated.Snowfall
In Alma, snow does not fall in April through December.Daylight
In September, the average length of the day in Alma is 12h and 21min.On the first day of September in Alma, sunrise is at 7:01 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:11 pm CDT.
Sunshine
In Alma, the average sunshine in September is 8.5h.UV index
In Alma, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In September, a daily UV index of 6 turns into the following recommendations:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Alma during September?
What is the average humidity in September in Alma?
How much does it rain in Alma in September?
When it does not snow in Alma?
What is the average length of the day in September in Alma?
What time are sunrise and sunset in September in Alma?
How many hours of sunshine does Alma have in September?
What is the UV index reading in September in Alma?
Average temperature in September
Alma, TX
- Average high temperature in September: 88°F
The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (55.2°F).
- Average low temperature in September: 69.8°F
The month with the highest average low temperature is August (75.2°F).
The coldest month (with the lowest average low temperature) is January (39.6°F).
Average pressure in September
Alma, TX
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Alma, TX
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is March (9.9mph).
The calmest month (with the lowest average wind speed) is September (6.5mph).
Average humidity in September
Alma, TX
- Average humidity in September: 66%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is August (59%).
Average rainfall in September
Alma, TX
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is October (4.45").
The driest month (with the least rainfall) is February (1.81").
Average rainfall days in September
Alma, TX
- Average rainfall days in September: 14.7 days
The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in September
Alma, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.83").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Alma, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Alma, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Alma, TX
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is January (22 days).
The month with the least sunshine days is May (13.2 days).
Average UV index in September
Alma, TX
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Alma, TX
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Alma, TX
- 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).
Alma, Texas, USA
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