September weather forecastPelahatchie, MS
September
Weather in September
September, the first month of the autumn in Pelahatchie, is still a hot month, with temperature in the range of an average low of 67.1°F (19.5°C) and an average high of 86.9°F (30.5°C).Temperature
The onset of September brings with it an average high-temperature of a still tropical 86.9°F (30.5°C), showing a negligible variation from the month before. In September, Pelahatchie experiences an average nighttime temperature of 67.1°F (19.5°C).Heat index
For September, the heat index is calculated to be a torrid 98.6°F (37°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is the outcome of merging air's temperature and its humidity metrics. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.
Humidity
In September, the average relative humidity is 73%.Rainfall
In Pelahatchie, during September, the rain falls for 14.9 days and regularly aggregates up to 2.95" (75mm) of precipitation. Throughout the year, there are 170.7 rainfall days, and 39.37" (1000mm) of precipitation is accumulated.Snowfall
March through November are months without snowfall.Daylight
In September, the average length of the day is 12h and 21min.On the first day of September, sunrise is at 6:34 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:44 pm CDT.
Sunshine
The average sunshine in September is 9.6h.UV index
In Pelahatchie, 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 unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index, 6 during September, leads to the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Pelahatchie, MS
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (54.7°F).
- Average low temperature in September: 67.1°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 (38.3°F).
Average pressure in September
Pelahatchie, 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
Pelahatchie, MS
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is February (8mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in September
Pelahatchie, MS
- Average humidity in September: 73%
The months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Pelahatchie, MS
- Average rainfall in September: 2.95"
The wettest month (with the highest rainfall) is July (3.86").
The driest month (with the least rainfall) is November (2.28").
Average rainfall days in September
Pelahatchie, MS
- Average rainfall days in September: 14.9 days
The month with the highest number of rainy days is July (20.8 days).
The month with the least rainy days is November (9.5 days).
Average snowfall in September
Pelahatchie, MS
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.35").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Pelahatchie, MS
- 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
Pelahatchie, MS
- 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 36min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in September
Pelahatchie, MS
- Average sunshine days in September: 13.2 days
The month with the most sunshine days is October (19.9 days).
The month with the least sunshine days is July (8.3 days).
Average UV index in September
Pelahatchie, 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
Pelahatchie, MS
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 28).
Average visibility in September
Pelahatchie, MS
- 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).
