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
The transition into September is marked with an average high-temperature of a warm 83.3°F (28.5°C), showing an insignificant shift from August's 88.3°F (31.3°C). Gravelly Springs records a consistent low-temperature of 63.7°F (17.6°C) during September nights.Heat index
During September, the heat index is estimated at a hot 89.6°F (32°C). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.Understanding the heat index involves considering values for shaded locales with light wind. 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 'apparent temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant 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.
Humidity
The average relative humidity in September in Gravelly Springs is 74%.Rainfall
In Gravelly Springs, Alabama, in September, it is raining for 12.6 days, with typically 2.4" (61mm) of accumulated precipitation. Throughout the year, there are 170.1 rainfall days, and 40.12" (1019mm) of precipitation is accumulated.Snowfall
In Gravelly Springs, snow does not fall in May through October.Daylight
In September, the average length of the day in Gravelly Springs is 12h and 23min.On the first day of the month, sunrise is at 6:24 am and sunset at 7:17 pm. On the last day of September, in Gravelly Springs, Alabama, sunrise is at 6:46 am and sunset at 6:36 pm CDT.
Sunshine
In Gravelly Springs, the average sunshine in September is 8.9h.UV index
The average daily maximum UV index in September in Gravelly Springs is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The daily high UV index of 5 in September translates into this advice:
Take necessary precautions - Suggestions to elude sunburn are provided. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Frequently asked questions
How hot is September in Gravelly Springs?
What is the average humidity in September in Gravelly Springs?
How many days does it rain in September in Gravelly Springs?
When it does not snow in Gravelly Springs?
How many hours of daylight does Gravelly Springs have in September?
What time are sunrise and sunset in September in Gravelly Springs?
How many hours of sunshine does Gravelly Springs have in September?
How high is the UV index in September in Gravelly Springs?
Average temperature in September
Gravelly Springs, AL
- Average high temperature in September: 83.3°F
The warmest month (with the highest average high temperature) is July (89.4°F).
The month with the lowest average high temperature is January (47.7°F).
- Average low temperature in September: 63.7°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (33.1°F).
Average pressure in September
Gravelly Springs, AL
- Average pressure in September: 30.01"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
Gravelly Springs, AL
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is February (7.9mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).
Average humidity in September
Gravelly Springs, 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 (73%).
Average rainfall in September
Gravelly Springs, AL
- Average rainfall in September: 2.4"
The wettest month (with the highest rainfall) is February (4.37").
The driest month (with the least rainfall) is November (2.28").
Average rainfall days in September
Gravelly Springs, AL
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is July (19.1 days).
The month with the least rainy days is November (9.7 days).
Average snowfall in September
Gravelly Springs, AL
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.55").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Gravelly Springs, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.3 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
Gravelly Springs, AL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
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 18min).
The month with the least sunshine is December (Average sunshine: 4h and 30min).
Average sunshine days in September
Gravelly Springs, AL
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in September
Gravelly Springs, AL
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Gravelly Springs, AL
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are June and September (Cloud cover 31).
Average visibility in September
Gravelly Springs, AL
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, June, September, October, November and December (6mi).
The months with the lowest visibility are January, May, July and August (5mi).
Gravelly Springs, Alabama, USA
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