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 average high-temperature is a still tropical 87.4°F (30.8°C) in September, hardly different from the 91.4°F (33°C) recorded in August. An average nighttime temperature of 68.2°F (20.1°C) is witnessed throughout September.Heat index
The average heat index in September is estimated at a fiery hot 102.2°F (39°C). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.Heat index determinations are made taking into account the shade and light air movements. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an aggregate value of air's warmth and moisture to show the human-felt temperature. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.
Humidity
The average relative humidity in September is 76%.Rainfall
In Expose, Mississippi, during September, the rain falls for 17.2 days and regularly aggregates up to 2.48" (63mm) of precipitation. In Expose, during the entire year, the rain falls for 172.7 days and collects up to 30.91" (785mm) of precipitation.Snowfall
April through November are months without snowfall in Expose, Mississippi.Daylight
The average length of the day in September in Expose is 12h and 21min.On the first day of September in Expose, sunrise is at 6:35 am and sunset at 7:22 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 Expose, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: During September, 6 as the daily maximum UV index converts into the following advice:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Frequently asked questions
How hot does it get in Expose in September?
What is the average humidity in September in Expose?
How much does it rain in Expose in September?
When it does not snow in Expose?
How many hours of daylight does Expose have in September?
When are sunrise and sunset in September in Expose?
How many hours of sunshine does Expose have in September?
How high is the UV index in September in Expose?
Average temperature in September
Expose, MS
- Average high temperature in September: 87.4°F
The warmest month (with the highest average high temperature) is August (91.4°F).
The month with the lowest average high temperature is January (56.8°F).
- Average low temperature in September: 68.2°F
The month with the highest average low temperature is August (72.5°F).
The coldest month (with the lowest average low temperature) is January (39.9°F).
Average pressure in September
Expose, MS
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).
Average wind speed in September
Expose, MS
- Average wind speed in September: 4.8mph
The windiest months (with the highest average wind speed) are January, February and April (6.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in September
Expose, MS
- Average humidity in September: 76%
The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Expose, MS
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is August (4.02").
The driest month (with the least rainfall) is November (1.5").
Average rainfall days in September
Expose, MS
- Average rainfall days in September: 17.2 days
The month with the highest number of rainy days is August (22.6 days).
The month with the least rainy days is November (7.8 days).
Average snowfall in September
Expose, MS
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.39").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Expose, MS
- 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
Expose, 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 12min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in September
Expose, MS
- Average sunshine days in September: 10.8 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is July (6.7 days).
Average UV index in September
Expose, MS
- 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
Expose, MS
- Average cloud cover in September: 32
The months with the most cloud cover are February and December (Cloud cover 49).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in September
Expose, MS
- Average visibility in September: 5mi
The months with the highest visibility are January, October and November (6mi).
The months with the lowest visibility are February, March, April, May, June, July, August, September and December (5mi).
Expose, Mississippi, USA
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