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 brings an average high-temperature of a warm 83.1°F (28.4°C), slightly deviating from August's 88.3°F (31.3°C). During the month of September, Griffin Addition anticipates a mean low-temperature of 63.9°F (17.7°C).Heat index
The heat index value during September is estimated at a tropical 89.6°F (32°C). If one continues to be active during enduring exposure, it could result in fatigue and heat cramps.Heat index specifics point out values are for conditions of shade and a slight breeze. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'feels like' or 'real feel', provides an understanding of perceived warmth by combining temperature and relative humidity. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Humidity
In Griffin Addition, Alabama, the average relative humidity in September is 74%.Rainfall
In September, the rain falls for 14 days. Throughout September, 2.6" (66mm) of precipitation is accumulated. In Griffin Addition, during the entire year, the rain falls for 176.2 days and collects up to 42.32" (1075mm) of precipitation.Snowfall
In Griffin Addition, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 23min.On the first day of September, sunrise is at 6:21 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 6:33 pm CDT.
Sunshine
In Griffin Addition, the average sunshine in September is 8.8h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 5 during September leads to these instructions:
Exercise prevention - Precautions against solar damage are endorsed. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Griffin Addition have in September?
What is the UV index reading in September?
Average temperature in September
Griffin Addition, AL
- Average high temperature in September: 83.1°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (47.8°F).
- Average low temperature in September: 63.9°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 (33.4°F).
Average pressure in September
Griffin Addition, 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
Griffin Addition, AL
- Average wind speed in September: 5.4mph
The windiest month (with the highest average wind speed) is February (8.6mph).
The calmest month (with the lowest average wind speed) is July (4.8mph).
Average humidity in September
Griffin Addition, AL
- Average humidity in September: 74%
The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Griffin Addition, AL
- Average rainfall in September: 2.6"
The wettest months (with the highest rainfall) are April and December (4.33").
The driest month (with the least rainfall) is November (2.4").
Average rainfall days in September
Griffin Addition, AL
- Average rainfall days in September: 14 days
The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is November (10.2 days).
Average snowfall in September
Griffin Addition, AL
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.63").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Griffin Addition, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.1 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
Griffin Addition, 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 months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
Griffin Addition, AL
- Average sunshine days in September: 14.1 days
The months with the most sunshine days are October and November (18.5 days).
The month with the least sunshine days is July (9.2 days).
Average UV index in September
Griffin Addition, 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
Griffin Addition, AL
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in September
Griffin Addition, 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).
Griffin Addition, Alabama, USA
Weather forecast for your location
2. Allow the app to use your location