September weather forecastMcKinley, AL
September
Weather in September
September, the first month of the autumn in McKinley, is still a tropical month, with an average temperature fluctuating between 87.8°F (31°C) and 67.3°F (19.6°C).Temperature
McKinley experiences an average high-temperature of a still hot 87.8°F (31°C) in September, subtly different from August's 91.9°F (33.3°C). During September, the average low-temperature is an enjoyable 67.3°F (19.6°C).Heat index
The heat index value during September is appraised at a very hot 100.4°F (38°C). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.Note that heat index values are valued for light wind and location in the shade. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', comes about by integrating the temperature readings with the humidity levels. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.
Humidity
In McKinley, Alabama, the average relative humidity in September is 71%.Rainfall
September is the month with the least rainfall. Rain falls for 13.1 days and accumulates 1.26" (32mm) of precipitation.Snowfall
In McKinley, Alabama, snow does not fall in March through October.Daylight
In McKinley, the average length of the day in September is 12h and 21min.On the first day of September, sunrise is at 6:25 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:35 pm CDT.
Sunshine
The average sunshine in September is 9.1h.UV index
In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.Note: In September, the maximum UV index of 6 translates into these guidelines:
Fend off overexposure. Sun protection is vital. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
McKinley, AL
- Average high temperature in September: 87.8°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 (54.1°F).
- Average low temperature in September: 67.3°F
The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (38.5°F).
Average pressure in September
McKinley, AL
- Average pressure in September: 29.99"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
McKinley, AL
- Average wind speed in September: 5.4mph
The windiest month (with the highest average wind speed) is February (7.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).
Average humidity in September
McKinley, AL
- Average humidity in September: 71%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (68%).
Average rainfall in September
McKinley, AL
- Average rainfall in September: 1.26"
The wettest months (with the highest rainfall) are April and August (2.44").
The driest month (with the least rainfall) is September (1.26").
Average rainfall days in September
McKinley, AL
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is July (19.5 days).
The month with the least rainy days is November (6.7 days).
Average snowfall in September
McKinley, AL
- Average snowfall in September: 0"
The months with the highest snowfall are January and December (0.31").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in September
McKinley, 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
McKinley, 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 6min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in September
McKinley, AL
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is November (21.8 days).
The month with the least sunshine days is July (9.2 days).
Average UV index in September
McKinley, 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
McKinley, AL
- Average cloud cover in September: 31
The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 30).
Average visibility in September
McKinley, 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).
