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
With the onset of September, Huntsville's climate undergoes a slight change as the average high-temperature moves from a very hot 95.9°F (35.5°C) in August to a hot 89.4°F (31.9°C). Throughout the month of September, Huntsville observes an average nighttime temperature of 69.4°F (20.8°C).Heat index
In September, the average heat index is evaluated at a blisteringly hot 105.8°F (41°C). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.Heat index guidelines indicate values are for light wind scenarios and shaded regions. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'feels like' or 'real feel', joins air temperature with relative humidity to produce a temperature perception for humans. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.
Humidity
In September, the average relative humidity in Huntsville is 73%.Rainfall
In Huntsville, during September, the rain falls for 17 days and regularly aggregates up to 3.19" (81mm) of precipitation. In Huntsville, during the entire year, the rain falls for 167.1 days and collects up to 33.54" (852mm) of precipitation.Snowfall
March through November are months without snowfall in Huntsville, Texas.Daylight
In Huntsville, the average length of the day in September is 12h and 20min.On the first day of September, sunrise is at 6:59 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 7:08 pm CDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
The average daily maximum UV index in September in Huntsville 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: In September, the maximum UV index of 6 suggests these recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Enhance your sun protection with tightly woven, yet airy clothing.
Frequently asked questions
How hot is it in Huntsville in September?
What is the average humidity in September in Huntsville?
How many days does it rain in September in Huntsville?
When it does not snow in Huntsville?
What is the average length of the day in September in Huntsville?
When are sunrise and sunset in September in Huntsville?
How long on average sun shines in September in Huntsville?
What is the UV index reading in September in Huntsville?
Average temperature in September
Huntsville, 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 (58.5°F).
- Average low temperature in September: 69.4°F
The months with the highest average low temperature are July and August (73.9°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).
Average pressure in September
Huntsville, TX
- Average pressure in September: 29.97"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
Huntsville, TX
- Average wind speed in September: 5.1mph
The windiest month (with the highest average wind speed) is April (7.2mph).
The calmest month (with the lowest average wind speed) is September (5.1mph).
Average humidity in September
Huntsville, TX
- Average humidity in September: 73%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is August (68%).
Average rainfall in September
Huntsville, TX
- Average rainfall in September: 3.19"
The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is November (1.93").
Average rainfall days in September
Huntsville, TX
- Average rainfall days in September: 17 days
The month with the highest number of rainy days is September (17 days).
The months with the least rainy days are January and October (11.3 days).
Average snowfall in September
Huntsville, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.24").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Huntsville, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.6 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
Huntsville, 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 4min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in September
Huntsville, TX
- Average sunshine days in September: 10.4 days
The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is September (10.4 days).
Average UV index in September
Huntsville, 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
Huntsville, TX
- Average cloud cover in September: 34
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Huntsville, TX
- Average visibility in September: 5mi
The months with the highest visibility are January, August, October and November (6mi).
The months with the lowest visibility are February, March, April, May, June, July, September and December (5mi).
Huntsville, Texas, USA
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