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 brings a slight decrease in temperature, down from a sweltering 95.9°F (35.5°C) in August to a tropical 89.4°F (31.9°C). Ace's average low-temperature is measured at an agreeable 69.4°F (20.8°C) during September.Heat index
The heat index for September is estimated at a blisteringly hot 107.6°F (42°C). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.When assessing, remember that heat index measurements are for light winds and shaded spots. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. 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.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. The body is at risk of dehydration and related complications when it fails to shed excessive heat.
Humidity
The average relative humidity in September is 76%.Rainfall
In Ace, in September, it is raining for 17.7 days, with typically 3.9" (99mm) of accumulated precipitation. Throughout the year, there are 172.3 rainfall days, and 35.24" (895mm) of precipitation is accumulated.Snowfall
March through November are months without snowfall.Daylight
In Ace, the average length of the day in September is 12h and 20min.On the first day of the month, sunrise is at 6:56 am and sunset at 7:41 pm. On the last day of September, sunrise is at 7:12 am and sunset at 7:05 pm CDT.
Sunshine
In Ace, the average sunshine in September is 8.3h.UV index
In Ace, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 6 during September translates into the following directions:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
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 many days does it rain in September?
When it does not snow?
What is the average length of the day 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
Ace, TX
- Average high temperature in September: 89.4°F
The warmest month (with the highest average high temperature) is August (95.9°F).
The month with the lowest average high temperature is January (59.2°F).
- Average low temperature in September: 69.4°F
The month with the highest average low temperature is July (74.1°F).
The coldest month (with the lowest average low temperature) is January (42.1°F).
Average pressure in September
Ace, TX
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Ace, TX
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest months (with the lowest average wind speed) are July, August and September (4.7mph).
Average humidity in September
Ace, TX
- Average humidity in September: 76%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are August and October (73%).
Average rainfall in September
Ace, TX
- Average rainfall in September: 3.9"
The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is November (2.09").
Average rainfall days in September
Ace, TX
- Average rainfall days in September: 17.7 days
The month with the highest number of rainy days is September (17.7 days).
The month with the least rainy days is October (11.5 days).
Average snowfall in September
Ace, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.39").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Ace, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.5 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Ace, TX
- 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 2min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).
Average sunshine days in September
Ace, TX
- Average sunshine days in September: 10.6 days
The month with the most sunshine days is October (17.6 days).
The month with the least sunshine days is September (10.6 days).
Average UV index in September
Ace, 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
Ace, TX
- Average cloud cover in September: 39
The month with the most cloud cover is February (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Ace, TX
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Ace, Texas, USA
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