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
As Semmes welcomes September, the average high-temperature is noted at a still tropical 87.3°F (30.7°C), closely aligning with the preceding month. Throughout the month of September, the average temperature in Semmes dips to a pleasant 72.5°F (22.5°C) at night.Heat index
For September, the heat index is calculated to be a fiery hot 100.4°F (38°C). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.Given the heat index, its values are aligned with shaded sites and gentle winds. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.
Humidity
The average relative humidity in September in Semmes, Alabama, is 74%.Rainfall
In September, in Semmes, the rain falls for 18.8 days. Throughout September, 3.03" (77mm) of precipitation is accumulated. Throughout the year, in Semmes, there are 168.3 rainfall days, and 30.28" (769mm) of precipitation is accumulated.Snowfall
In Semmes, snow does not fall in February through December.Daylight
The average length of the day in September in Semmes is 12h and 20min.On the first day of September in Semmes, sunrise is at 6:29 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 6:39 pm CDT.
Sunshine
The average sunshine in September is 9.7h.UV index
In September, the average daily maximum UV index in Semmes is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 6 suggests these recommendations:
Deter overexposure. Protecting against the sun's effects is essential. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Frequently asked questions
How hot is September in Semmes?
What is the average humidity in September in Semmes?
How many days does it rain in September in Semmes?
When it does not snow in Semmes?
What is the average length of the day in September in Semmes?
When are sunrise and sunset in September in Semmes?
How long on average sun shines in September in Semmes?
How high is the UV index in September in Semmes?
Average temperature in September
Semmes, AL
- Average high temperature in September: 87.3°F
The warmest months (with the highest average high temperature) are July and August (90.5°F).
The month with the lowest average high temperature is January (58.5°F).
- Average low temperature in September: 72.5°F
The month with the highest average low temperature is August (76.6°F).
The coldest month (with the lowest average low temperature) is January (43.9°F).
Average pressure in September
Semmes, AL
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).
Average wind speed in September
Semmes, AL
- Average wind speed in September: 5.6mph
The windiest months (with the highest average wind speed) are January, February, March, April and December (7.3mph).
The calmest month (with the lowest average wind speed) is July (5.1mph).
Average humidity in September
Semmes, 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 (70%).
Average rainfall in September
Semmes, AL
- Average rainfall in September: 3.03"
The wettest month (with the highest rainfall) is August (4.92").
The driest month (with the least rainfall) is February (1.34").
Average rainfall days in September
Semmes, AL
- Average rainfall days in September: 18.8 days
The month with the highest number of rainy days is July (24.6 days).
The month with the least rainy days is November (7.2 days).
Average snowfall in September
Semmes, AL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.16").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Semmes, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Semmes, AL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 6min).
The months with the least sunshine are February and December (Average sunshine: 5h and 24min).
Average sunshine days in September
Semmes, AL
- Average sunshine days in September: 9.3 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is July (4.8 days).
Average UV index in September
Semmes, AL
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Semmes, AL
- Average cloud cover in September: 26
The months with the most cloud cover are February and December (Cloud cover 43).
The month with the least cloud cover is October (Cloud cover 23).
Average visibility in September
Semmes, 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).
Semmes, Alabama, USA
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