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
In September, Bristow experiences a minor shift in meteorological conditions with average high-temperatures marked at a warm 82.2°F (27.9°C), closely mirroring the climate in August. In September, the recorded average low-temperature is a refreshing 62.4°F (16.9°C).Heat index
The heat index value during September is appraised at a tropical 87.8°F (31°C). When exposure and activity are sustained, they could induce fatigue, with a chance of heat cramps.Take into consideration that the heat index values are calculated for shade and light wind conditions. 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 'felt air temperature' or 'apparent temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular importance for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Humidity
The average relative humidity in September in Bristow is 75%.Rainfall
In Bristow, during September, the rain falls for 14.7 days and regularly aggregates up to 2.68" (68mm) of precipitation. Throughout the year, in Bristow, Alabama, there are 184 rainfall days, and 43.54" (1106mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in Bristow.Daylight
The average length of the day in September in Bristow is 12h and 22min.On the first day of the month, sunrise is at 6:17 am and sunset at 7:08 pm. On the last day of September, in Bristow, Alabama, sunrise is at 6:37 am and sunset at 6:28 pm CDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: An average maximum UV index of 5 in September leads to these recommendations:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Frequently asked questions
What is the temperature in September in Bristow?
What is the average humidity in September in Bristow?
How much does it rain in Bristow in September?
When it does not snow in Bristow?
How many hours of daylight does Bristow have in September?
When is the sunrise / sunset in September in Bristow?
How many hours of sunshine does Bristow have in September?
What is the UV index reading in September in Bristow?
Average temperature in September
Bristow, AL
- Average high temperature in September: 82.2°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (48.7°F).
- Average low temperature in September: 62.4°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (32.9°F).
Average pressure in September
Bristow, 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
Bristow, AL
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is February (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).
Average humidity in September
Bristow, AL
- Average humidity in September: 75%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Bristow, AL
- Average rainfall in September: 2.68"
The wettest months (with the highest rainfall) are February and December (4.49").
The driest month (with the least rainfall) is October (2.64").
Average rainfall days in September
Bristow, AL
- Average rainfall days in September: 14.7 days
The month with the highest number of rainy days is July (21.6 days).
The month with the least rainy days is November (10.1 days).
Average snowfall in September
Bristow, AL
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.79").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Bristow, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.4 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
Bristow, 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 4min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Bristow, AL
- Average sunshine days in September: 13.3 days
The month with the most sunshine days is October (18.7 days).
The month with the least sunshine days is July (7.3 days).
Average UV index in September
Bristow, 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
Bristow, 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
Bristow, AL
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Bristow, Alabama, USA
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