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
With September's advent, Clay sees an average high-temperature of a warm 84.7°F (29.3°C), subtly shifted from August's 89.2°F (31.8°C). In Clay, an average temperature of 64.6°F (18.1°C) is noted during September nights.Heat index
September's mean heat index is computed to be a hot 93.2°F (34°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.Metrics for the heat index primarily focus on shaded spots and light wind conditions. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Humidity
In Clay, the average relative humidity in September is 74%.Rainfall
In Clay, in September, during 12.1 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. In Clay, during the entire year, the rain falls for 149 days and collects up to 19.88" (505mm) of precipitation.Snowfall
In Clay, Alabama, snow does not fall in April through October.Daylight
In Clay, the average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 6:20 am and sunset at 7:11 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:31 pm CDT.
Sunshine
The average sunshine in September in Clay is 8.8h.UV index
In September, the average daily maximum UV index in Clay is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The average daily UV index of 5 in September transforms into the following instructions:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Frequently asked questions
Is it hot in Clay during September?
What is the average humidity in September in Clay?
How much does it rain in Clay in September?
When it does not snow in Clay?
How many hours of daylight does Clay have in September?
What time are sunrise and sunset in September in Clay?
How long on average sun shines in September in Clay?
What is the UV index reading in September in Clay?
Average temperature in September
Clay, AL
- Average high temperature in September: 84.7°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (50.7°F).
- Average low temperature in September: 64.6°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (34.9°F).
Average pressure in September
Clay, 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 (29.98"Hg).
Average wind speed in September
Clay, AL
- Average wind speed in September: 4.8mph
The windiest months (with the highest average wind speed) are January and February (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).
Average humidity in September
Clay, 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
Clay, AL
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is August (2.24").
The driest month (with the least rainfall) is October (1.06").
Average rainfall days in September
Clay, AL
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is November (7.9 days).
Average snowfall in September
Clay, AL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.2").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Clay, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1 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
Clay, 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: 8h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in September
Clay, AL
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (9.6 days).
Average UV index in September
Clay, 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
Clay, AL
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June and September (Cloud cover 30).
Average visibility in September
Clay, 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).
Clay, Alabama, USA
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