September weather forecastMyrtlewood, AL
September
Weather in September
September, the first month of the autumn in Myrtlewood, is still a hot month, with an average temperature varying between 88°F (31.1°C) and 67.1°F (19.5°C).Temperature
With the onset of September, Myrtlewood's average high-temperature clocks in at a still tropical 88°F (31.1°C), showing a minor fluctuation from the previous month. An average nighttime temperature of 67.1°F (19.5°C) is witnessed throughout September.Heat index
The heat index in September is evaluated at a fiery hot 100.4°F (38°C). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.Consider that heat index readings are for situations in the shade and light wind. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.
Humidity
The average relative humidity in September in Myrtlewood is 72%.Rainfall
September is the month with the least rainfall. Rain falls for 13.3 days and accumulates 2.01" (51mm) of precipitation.Snowfall
March through November are months without snowfall.Daylight
The average length of the day in September is 12h and 21min.On the first day of the month, sunrise is at 6:27 am and sunset at 7:15 pm. On the last day of September, sunrise is at 6:45 am and sunset at 6:37 pm CDT.
Sunshine
In Myrtlewood, the average sunshine in September is 9.3h.UV index
In September, the average daily maximum UV index 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 average person.Note: A maximum UV index of 6 in September translates into the following recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Myrtlewood, AL
- Average high temperature in September: 88°F
The warmest month (with the highest average high temperature) is July (92.7°F).
The month with the lowest average high temperature is January (55°F).
- Average low temperature in September: 67.1°F
The month with the highest average low temperature is July (72.5°F).
The coldest month (with the lowest average low temperature) is January (38.5°F).
Average pressure in September
Myrtlewood, AL
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Myrtlewood, AL
- Average wind speed in September: 5mph
The windiest months (with the highest average wind speed) are January, February, March and April (7mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in September
Myrtlewood, AL
- Average humidity in September: 72%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (69%).
Average rainfall in September
Myrtlewood, AL
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is December (3.5").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in September
Myrtlewood, AL
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is November (8.3 days).
Average snowfall in September
Myrtlewood, AL
- Average snowfall in September: 0"
The months with the highest snowfall are January and December (0.35").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Myrtlewood, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.8 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
Myrtlewood, AL
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 9h and 18min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Myrtlewood, AL
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is October (21.2 days).
The month with the least sunshine days is July (8.3 days).
Average UV index in September
Myrtlewood, AL
- Average UV index in September: 6
The months with the highest UV index are 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
Myrtlewood, AL
- Average cloud cover in September: 29
The months with the most cloud cover are February and December (Cloud cover 47).
The months with the least cloud cover are September and October (Cloud cover 29).
Average visibility in September
Myrtlewood, 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).
