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
Porterville marks the start of September with an average high-temperature of a still hot 86.9°F (30.5°C), hinting at a slight fluctuation from August's 91.4°F (33°C). Porterville anticipates an average minimum temperature of 66.6°F (19.2°C) in the month of September.Heat index
September's heat index is appraised at a fiery hot 98.6°F (37°C). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.Take into consideration that the heat index values are calculated for shade and light wind conditions. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', shows a temperature sensation when both heat and moisture conditions are combined. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.
Humidity
The average relative humidity in September is 73%.Rainfall
September is the month with the least rainfall. Rain falls for 12.8 days and accumulates 1.5" (38mm) of precipitation.Snowfall
In Porterville, Mississippi, snow does not fall in March through October.Daylight
In September, the average length of the day is 12h and 22min.On the first day of the month, sunrise is at 6:29 am and sunset at 7:18 pm. On the last day of September, sunrise is at 6:47 am and sunset at 6:39 pm CDT.
Sunshine
The average sunshine in September is 9h.UV index
In Porterville, 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 the ordinary person.Note: The maximum UV index of 6 during September leads to these instructions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Porterville have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Porterville, MS
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (54°F).
- Average low temperature in September: 66.6°F
The months with the highest average low temperature are July and August (71.6°F).
The coldest month (with the lowest average low temperature) is January (37.4°F).
Average pressure in September
Porterville, 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
Porterville, MS
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are January and February (7.7mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in September
Porterville, 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
Porterville, MS
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is August (2.6").
The driest month (with the least rainfall) is September (1.5").
Average rainfall days in September
Porterville, MS
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is November (7.5 days).
Average snowfall in September
Porterville, MS
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.51").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in September
Porterville, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.9 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
Porterville, MS
- Average daylight in September: 12h and 2min
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 0min
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
Porterville, MS
- Average sunshine days in September: 15.4 days
The months with the most sunshine days are October and November (21.3 days).
The month with the least sunshine days is July (9.6 days).
Average UV index in September
Porterville, 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
Porterville, MS
- Average cloud cover in September: 31
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 30).
Average visibility in September
Porterville, MS
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Porterville, Mississippi, USA
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