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's beginning signals an average high-temperature of a warm 83.5°F (28.6°C), barely different from August's 88.3°F (31.3°C). Throughout September, an average nighttime temperature of 64°F (17.8°C) is experienced in Addison.Heat index
For most parts of September, the heat index is computed to be a tropical 91.4°F (33°C). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.It is essential to grasp that the heat index's numbers are for shade and light wind settings. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
Humidity
In Addison, the average relative humidity in September is 74%.Rainfall
In Addison, Alabama, in September, during 14.4 rainfall days, 2.64" (67mm) of precipitation is typically accumulated. In Addison, during the entire year, the rain falls for 176.2 days and collects up to 40.43" (1027mm) of precipitation.Snowfall
April through October are months without snowfall in Addison.Daylight
In September, the average length of the day in Addison is 12h and 22min.On the first day of the month, sunrise is at 6:22 am and sunset at 7:14 pm. On the last day of September, in Addison, sunrise is at 6:43 am and sunset at 6:33 pm CDT.
Sunshine
The average sunshine in September is 8.9h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Exercise prevention - Warding off sunburn is urged. Avoiding the Sun during its peak radiation time around midday is a healthy practice. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Frequently asked questions
How hot does it get in Addison in September?
What is the average humidity in September in Addison?
How many days does it rain in September in Addison?
When it does not snow in Addison?
How many hours of daylight does Addison have in September?
When are sunrise and sunset in September in Addison?
How many hours of sunshine does Addison have in September?
What is the UV index intensity in September in Addison?
Average temperature in September
Addison, AL
- Average high temperature in September: 83.5°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (48.9°F).
- Average low temperature in September: 64°F
The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (34°F).
Average pressure in September
Addison, AL
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Addison, AL
- Average wind speed in September: 5.1mph
The windiest month (with the highest average wind speed) is February (7.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.6mph).
Average humidity in September
Addison, AL
- Average humidity in September: 74%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Addison, AL
- Average rainfall in September: 2.64"
The wettest month (with the highest rainfall) is December (4.21").
The driest month (with the least rainfall) is November (2.36").
Average rainfall days in September
Addison, AL
- Average rainfall days in September: 14.4 days
The month with the highest number of rainy days is July (20.2 days).
The month with the least rainy days is November (10.1 days).
Average snowfall in September
Addison, AL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.67").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Addison, AL
- 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 May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Addison, AL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in September
Addison, AL
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is October (19 days).
The month with the least sunshine days is July (8.6 days).
Average UV index in September
Addison, AL
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Addison, AL
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are June and September (Cloud cover 30).
Average visibility in September
Addison, 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).
Addison, Alabama, USA
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