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 arrival of September marks a slight shift to an average high-temperature of a still hot 87.4°F (30.8°C) from August's 91.8°F (33.2°C). In Star, the September nights cool down to an average low of 67.6°F (19.8°C).Heat index
September's mean heat index is computed to be a torrid 100.4°F (38°C). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.Keep in mind the heat index values are meant for areas in shade and with light wind. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a numerical representation of warmth when taking temperature and moisture levels into account. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.
Humidity
In September, the average relative humidity is 73%.Rainfall
In Star, in September, during 14.1 rainfall days, 2.8" (71mm) of precipitation is typically accumulated. Throughout the year, there are 169.5 rainfall days, and 38.82" (986mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall.Daylight
The average length of the day in September is 12h and 21min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:23 pm. On the last day of September, sunrise is at 6:53 am and sunset at 6:45 pm CDT.
Sunshine
In Star, the average sunshine in September is 9.6h.UV index
In Star, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: In September, an average UV index of 6 transforms into the following instructions:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. 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. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
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?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Star have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Star have in September?
How high is the UV index in September in Star?
Average temperature in September
Star, MS
- Average high temperature in September: 87.4°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 (54.7°F).
- Average low temperature in September: 67.6°F
The month with the highest average low temperature is July (72.5°F).
The coldest month (with the lowest average low temperature) is January (38.7°F).
Average pressure in September
Star, 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
Star, MS
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is February (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in September
Star, 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 (69%).
Average rainfall in September
Star, MS
- Average rainfall in September: 2.8"
The wettest month (with the highest rainfall) is April (3.94").
The driest month (with the least rainfall) is November (2.36").
Average rainfall days in September
Star, MS
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is August (19.9 days).
The month with the least rainy days is November (9.2 days).
Average snowfall in September
Star, MS
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.55").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Star, 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
Star, 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 6min).
- Average sunshine in September: 9h and 4min
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
Star, MS
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in September
Star, 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
Star, 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
Star, 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).
Star, Mississippi, USA
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