September weather forecastPerkinston, MS
September
Weather in September
The first month of the autumn, September, is still a hot month in Perkinston, Mississippi, with temperature in the range of an average low of 69.8°F (21°C) and an average high of 87.6°F (30.9°C).Temperature
The arrival of September coincides with an average high-temperature of a still tropical 87.6°F (30.9°C), indicating a minimal shift from August's 91.9°F (33.3°C). In September, Perkinston encounters an average low-temperature of 69.8°F (21°C) during the night.Heat index
During September, the heat index is calculated to be a very hot 102.2°F (39°C). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.Take into consideration that the heat index values are calculated for shade and light wind conditions. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', reflects the feeling of heat when considering both air temperature and humidity. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.
Humidity
In Perkinston, the average relative humidity in September is 76%.Rainfall
In September, the rain falls for 18.1 days. Throughout September, 2.64" (67mm) of precipitation is accumulated. Throughout the year, there are 172.1 rainfall days, and 31.46" (799mm) of precipitation is accumulated.Snowfall
February through November are months without snowfall in Perkinston.Daylight
In Perkinston, the average length of the day in September is 12h and 20min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:19 pm. On the last day of September, in Perkinston, sunrise is at 6:49 am and sunset at 6:42 pm CDT.
Sunshine
In September, the average sunshine is 9.4h.UV index
In Perkinston, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high UV index of 6 in September translates into the following recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Perkinston, MS
- Average high temperature in September: 87.6°F
The warmest month (with the highest average high temperature) is August (91.9°F).
The month with the lowest average high temperature is January (58.1°F).
- Average low temperature in September: 69.8°F
The month with the highest average low temperature is August (74.1°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).
Average pressure in September
Perkinston, 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
Perkinston, MS
- Average wind speed in September: 4.6mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).
Average humidity in September
Perkinston, MS
- Average humidity in September: 76%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Perkinston, MS
- Average rainfall in September: 2.64"
The wettest month (with the highest rainfall) is August (4.57").
The driest month (with the least rainfall) is November (1.61").
Average rainfall days in September
Perkinston, MS
- Average rainfall days in September: 18.1 days
The month with the highest number of rainy days is July (24 days).
The month with the least rainy days is November (8 days).
Average snowfall in September
Perkinston, MS
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.31").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Perkinston, 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
Perkinston, MS
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 9h and 24min
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
Perkinston, MS
- Average sunshine days in September: 9.2 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is July (5.3 days).
Average UV index in September
Perkinston, MS
- Average UV index in September: 6
The months with the highest UV index are May, 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
Perkinston, MS
- Average cloud cover in September: 29
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 27).
Average visibility in September
Perkinston, MS
- Average visibility in September: 5mi
The months with the highest visibility are June, July, August, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, September and December (5mi).
