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
In September, the average high-temperature registers at a still hot 87.6°F (30.9°C), nearly identical to August's 91.6°F (33.1°C). Throughout September, the nighttime temperature averages to a refreshing 67.3°F (19.6°C).Heat index
During September, the heat index is appraised at a torrid 102.2°F (39°C). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.Understanding the heat index involves considering values for shaded locales with light wind. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular importance for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.
Humidity
In September, the average relative humidity is 74%.Rainfall
In Mendenhall, during September, the rain falls for 13.4 days and regularly aggregates up to 1.61" (41mm) of precipitation. In Mendenhall, during the entire year, the rain falls for 145.2 days and collects up to 21.73" (552mm) 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 September, sunrise is at 6:35 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:45 pm CDT.
Sunshine
In September, the average sunshine is 9.3h.UV index
In Mendenhall, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: An average UV index of 6 in September transforms into this advice:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Frequently asked questions
How hot does it get in Mendenhall in September?
What is the average humidity in September in Mendenhall?
How many days does it rain in September in Mendenhall?
When it does not snow in Mendenhall?
What is the average length of the day in September in Mendenhall?
When are sunrise and sunset in September in Mendenhall?
How long on average sun shines in September in Mendenhall?
What is the UV index intensity in September in Mendenhall?
Average temperature in September
Mendenhall, MS
- Average high temperature in September: 87.6°F
The warmest months (with the highest average high temperature) are July and August (91.6°F).
The month with the lowest average high temperature is January (55°F).
- Average low temperature in September: 67.3°F
The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (38.7°F).
Average pressure in September
Mendenhall, MS
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Mendenhall, MS
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is February (7.7mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).
Average humidity in September
Mendenhall, MS
- Average humidity in September: 74%
The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Mendenhall, MS
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is August (2.64").
The driest month (with the least rainfall) is November (1.34").
Average rainfall days in September
Mendenhall, MS
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is October (7.4 days).
Average snowfall in September
Mendenhall, MS
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Mendenhall, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.7 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
Mendenhall, MS
- 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: 9h and 2min
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
Mendenhall, MS
- Average sunshine days in September: 14.6 days
The month with the most sunshine days is October (22.4 days).
The month with the least sunshine days is July (10.1 days).
Average UV index in September
Mendenhall, MS
- Average UV index in September: 6
The months with the highest UV index are 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
Mendenhall, MS
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 30).
Average visibility in September
Mendenhall, MS
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, October, November and December (6mi).
The months with the lowest visibility are May, July, August and September (5mi).
Mendenhall, Mississippi, USA
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