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
Stepping into September, Duncanville records an average high-temperature of a still tropical 86.4°F (30.2°C), almost consistent with August. In Duncanville, September is marked by an average low-temperature of 66.6°F (19.2°C).Heat index
The heat index for September is computed to be a sweltering 96.8°F (36°C). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is the outcome of merging air's temperature and its humidity metrics. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.
Humidity
In September, the average relative humidity in Duncanville is 71%.Rainfall
In Duncanville, during September, the rain falls for 13.5 days and regularly aggregates up to 2.44" (62mm) of precipitation. In Duncanville, during the entire year, the rain falls for 169.8 days and collects up to 39.96" (1015mm) of precipitation.Snowfall
April through October are months without snowfall in Duncanville.Daylight
The average length of the day in September in Duncanville is 12h and 22min.On the first day of the month, sunrise is at 6:24 am and sunset at 7:14 pm. On the last day of September, sunrise is at 6:43 am and sunset at 6:35 pm CDT.
Sunshine
In Duncanville, Alabama, the average sunshine in September is 9.2h.UV index
The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 6 during September translates into these guidelines:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Frequently asked questions
Is it hot in Duncanville during September?
What is the average humidity in September in Duncanville?
How much does it rain in Duncanville in September?
When it does not snow in Duncanville?
How many hours of daylight does Duncanville have in September?
When is the sunrise / sunset in September in Duncanville?
How long on average sun shines in September in Duncanville?
What is the UV index reading in September in Duncanville?
Average temperature in September
Duncanville, AL
- Average high temperature in September: 86.4°F
The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (52.2°F).
- Average low temperature in September: 66.6°F
The month with the highest average low temperature is July (71.8°F).
The coldest month (with the lowest average low temperature) is January (36.5°F).
Average pressure in September
Duncanville, AL
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in September
Duncanville, AL
- Average wind speed in September: 5.1mph
The windiest months (with the highest average wind speed) are March and April (7.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.6mph).
Average humidity in September
Duncanville, AL
- Average humidity in September: 71%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Duncanville, AL
- Average rainfall in September: 2.44"
The wettest month (with the highest rainfall) is April (4.29").
The driest month (with the least rainfall) is October (2.24").
Average rainfall days in September
Duncanville, AL
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (20.6 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in September
Duncanville, AL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.71").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Duncanville, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Duncanville, AL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in September
Duncanville, AL
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is October (19.9 days).
The month with the least sunshine days is July (8.8 days).
Average UV index in September
Duncanville, AL
- Average UV index in September: 6
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in September
Duncanville, AL
- Average cloud cover in September: 28
The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is September (Cloud cover 28).
Average visibility in September
Duncanville, AL
- 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).
Duncanville, Alabama, USA
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