September weather forecastPreston, MS
September
Weather in September
The first month of the autumn, September, is still a hot month in Preston, Mississippi, with temperature in the range of an average high of 86°F (30°C) and an average low of 66.2°F (19°C).Temperature
Preston experiences an average high-temperature of a still tropical 86°F (30°C) in September, marking an insignificant shift from 90.7°F (32.6°C) in August. In the month of September, an average of 66.2°F (19°C) marks the low-temperature.Heat index
In September, the heat index is estimated at a torrid 96.8°F (36°C). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.When referencing the heat index, its values are suitable for shady environments and light breezes. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.
Humidity
In Preston, the average relative humidity in September is 73%.Rainfall
In Preston, in September, during 13.7 rainfall days, 3.03" (77mm) of precipitation is typically accumulated. Throughout the year, there are 176.8 rainfall days, and 40.59" (1031mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall.Daylight
In September, the average length of the day is 12h and 22min.On the first day of September, sunrise is at 6:30 am and sunset at 7:19 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:40 pm CDT.
Sunshine
In September, the average sunshine is 9.3h.UV index
The average daily maximum UV index in September in Preston is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the maximum UV index of 5 suggests these recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Preston, MS
- Average high temperature in September: 86°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (53.1°F).
- Average low temperature in September: 66.2°F
The month with the highest average low temperature is August (71.2°F).
The coldest month (with the lowest average low temperature) is January (37°F).
Average pressure in September
Preston, 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
Preston, MS
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is February (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Preston, MS
- Average humidity in September: 73%
The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Preston, MS
- Average rainfall in September: 3.03"
The wettest month (with the highest rainfall) is April (3.98").
The driest month (with the least rainfall) is November (2.48").
Average rainfall days in September
Preston, MS
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is July (22.1 days).
The month with the least rainy days is November (9.6 days).
Average snowfall in September
Preston, MS
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.39").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Preston, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.3 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
Preston, MS
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 9h and 18min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in September
Preston, MS
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is July (7.5 days).
Average UV index in September
Preston, MS
- Average UV index in September: 5
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
Preston, MS
- Average cloud cover in September: 29
The months with the most cloud cover are February and December (Cloud cover 48).
The months with the least cloud cover are September and October (Cloud cover 29).
Average visibility in September
Preston, 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).
