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
The transition into September reveals an average high-temperature of a still tropical 87.1°F (30.6°C), mirroring a close resemblance to August. Throughout the month of September, Chisholm expects an average low of 67.3°F (19.6°C).Heat index
During September, the heat index is estimated at a torrid 98.6°F (37°C). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.Understand that the heat index values take into account shaded locations and mild winds. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'real feel', ties air temperature with relative humidity to produce the perceived temperature sensation. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.
Humidity
In September, the average relative humidity in Chisholm is 72%.Rainfall
The month with the least rainfall in Chisholm is September, when the rain falls for 12.8 days and typically collects 1.22" (31mm) of precipitation.Snowfall
In Chisholm, Alabama, snow does not fall in April through November.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:20 am and sunset at 7:09 pm. On the last day of September, sunrise is at 6:38 am and sunset at 6:30 pm CDT.
Sunshine
The average sunshine in September is 8.8h.UV index
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The average daily UV index of 6 in September transforms into the following instructions:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
How hot does it get in Chisholm in September?
What is the average humidity in September in Chisholm?
What is the driest month in Chisholm?
How much does it rain in Chisholm in September?
When it does not snow in Chisholm?
How many hours of daylight does Chisholm have in September?
What time are sunrise and sunset in September in Chisholm?
How many hours of sunshine does Chisholm have in September?
What is the UV index reading in September in Chisholm?
Average temperature in September
Chisholm, AL
- Average high temperature in September: 87.1°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (54.7°F).
- Average low temperature in September: 67.3°F
The months with the highest average low temperature are July and August (72.1°F).
The coldest month (with the lowest average low temperature) is January (38.5°F).
Average pressure in September
Chisholm, AL
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in September
Chisholm, AL
- Average wind speed in September: 5.3mph
The windiest months (with the highest average wind speed) are January, February and December (7.6mph).
The calmest month (with the lowest average wind speed) is July (4.8mph).
Average humidity in September
Chisholm, AL
- Average humidity in September: 72%
The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Chisholm, AL
- Average rainfall in September: 1.22"
The wettest months (with the highest rainfall) are August and December (2.36").
The driest month (with the least rainfall) is September (1.22").
Average rainfall days in September
Chisholm, AL
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is August (19.4 days).
The month with the least rainy days is November (6.7 days).
Average snowfall in September
Chisholm, AL
- Average snowfall in September: 0"
The months with the highest snowfall are January and March (0.2").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Chisholm, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.6 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Chisholm, AL
- Average daylight in September: 12h and 2min
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: 8h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).
Average sunshine days in September
Chisholm, AL
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is October (21.9 days).
The month with the least sunshine days is July (9 days).
Average UV index in September
Chisholm, AL
- Average UV index in September: 6
The months with the highest UV index are May, June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Chisholm, AL
- Average cloud cover in September: 31
The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in September
Chisholm, 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).
Chisholm, Alabama, USA
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