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
September's onset brings an average high-temperature of a moderately hot 85.8°F (29.9°C), showing a minute difference from August's 90.3°F (32.4°C). Throughout September, the average low-temperature records at a refreshing 65.7°F (18.7°C).Heat index
In September, the average heat index is estimated at a sweltering 95°F (35°C). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.One should be cognizant that the heat index values are tailored for shaded spots and mild winds. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an estimation of the warmth sensation when considering humidity levels. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.
Humidity
The average relative humidity in September is 72%.Rainfall
In Union Hall, in September, during 12.9 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. In Union Hall, during the entire year, the rain falls for 160 days and collects up to 35.2" (894mm) of precipitation.Snowfall
In Union Hall, snow does not fall in April 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 6:32 am and sunset at 7:23 pm. On the last day of September, sunrise is at 6:52 am and sunset at 6:43 pm CDT.
Sunshine
In Union Hall, the average sunshine in September is 9.6h.UV index
In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the UV index of 6 transforms into the following advice:
Resist extreme sun exposure. Guarding against solar damage is essential. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Experience reduced UV exposure by about half when donning a wide-brim hat.
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 much does it rain in September?
When it does not snow?
How many hours of daylight does Union Hall have in September?
When is the sunrise / sunset in September in Union Hall?
How many hours of sunshine does Union Hall have in September?
How high is the UV index in September in Union Hall?
Average temperature in September
Union Hall, MS
- Average high temperature in September: 85.8°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (49.5°F).
- Average low temperature in September: 65.7°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (35.1°F).
Average pressure in September
Union Hall, MS
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Union Hall, MS
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is February (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in September
Union Hall, MS
- Average humidity in September: 72%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Union Hall, MS
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is February (4.02").
The driest month (with the least rainfall) is November (1.93").
Average rainfall days in September
Union Hall, MS
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is November (9.1 days).
Average snowfall in September
Union Hall, MS
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.63").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Union Hall, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.7 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Union Hall, MS
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- 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 42min).
Average sunshine days in September
Union Hall, MS
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is October (20.4 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in September
Union Hall, 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, February and December (UV index 3).
Average cloud cover in September
Union Hall, MS
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June and September (Cloud cover 28).
Average visibility in September
Union Hall, 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).
Union Hall, Mississippi, USA
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