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 arrival registers an average high-temperature of a moderately hot 85.6°F (29.8°C), closely aligning with the temperature of the previous month. An average low-temperature of 65.5°F (18.6°C) is expected during September.Heat index
The average heat index in September is computed to be a sweltering 95°F (35°C). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.Data suggests that the heat index is set for environments in shade and with a light wind. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. 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.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.
Humidity
The months with the lowest humidity are September and October, with an average relative humidity of 72%.Rainfall
The month with the least rainfall is September, when the rain falls for 11.9 days and typically collects 2.4" (61mm) of precipitation.Snowfall
April through October are months without snowfall in Vernon.Daylight
In September, the average length of the day in Vernon is 12h and 22min.On the first day of the month, sunrise is at 6:26 am and sunset at 7:17 pm. On the last day of September, in Vernon, sunrise is at 6:46 am and sunset at 6:37 pm CDT.
Sunshine
The average sunshine in September is 9.3h.UV index
In Vernon, Alabama, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In September, the maximum UV index of 5 transforms into these recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Frequently asked questions
How hot does it get in Vernon in September?
What are the least humid months in Vernon?
What is the average humidity in September in Vernon?
What is the driest month in Vernon?
How many days does it rain in September in Vernon?
When it does not snow in Vernon?
How many hours of daylight does Vernon have in September?
When are sunrise and sunset in September in Vernon?
How long on average sun shines in September in Vernon?
How high is the UV index in September in Vernon?
Average temperature in September
Vernon, AL
- Average high temperature in September: 85.6°F
The warmest months (with the highest average high temperature) are July and August (91°F).
The month with the lowest average high temperature is January (50.5°F).
- Average low temperature in September: 65.5°F
The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (35.4°F).
Average pressure in September
Vernon, 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
Vernon, AL
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is February (7.5mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).
Average humidity in September
Vernon, AL
- Average humidity in September: 72%
The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are September and October (72%).
Average rainfall in September
Vernon, AL
- Average rainfall in September: 2.4"
The wettest months (with the highest rainfall) are February and April (4.33").
The driest month (with the least rainfall) is September (2.4").
Average rainfall days in September
Vernon, AL
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is November (9.1 days).
Average snowfall in September
Vernon, AL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.47").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Vernon, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.3 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
Vernon, 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: 10h and 0min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in September
Vernon, AL
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is October (20 days).
The month with the least sunshine days is July (10.3 days).
Average UV index in September
Vernon, AL
- Average UV index in September: 5
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
Vernon, AL
- Average cloud cover in September: 28
The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is September (Cloud cover 28).
Average visibility in September
Vernon, 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).
Vernon, Alabama, USA
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