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
Raleigh records an average high-temperature of a still hot 87.3°F (30.7°C) in September, maintaining a close correlation with August's 91.4°F (33°C). Nighttime temperatures hover around an average low of 67.1°F (19.5°C) in September.Heat index
Throughout September, the heat index is appraised at a torrid 100.4°F (38°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.Data suggests that the heat index is set for environments in shade and with a light wind. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. 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 gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.
Humidity
The average relative humidity in September in Raleigh is 74%.Rainfall
In Raleigh, during September, the rain falls for 15 days and regularly aggregates up to 3.11" (79mm) of precipitation. In Raleigh, during the entire year, the rain falls for 170.6 days and collects up to 38.19" (970mm) of precipitation.Snowfall
In Raleigh, snow does not fall in April through November.Daylight
The average length of the day in September in Raleigh is 12h and 21min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:21 pm. On the last day of September, in Raleigh, sunrise is at 6:51 am and sunset at 6:43 pm CDT.
Sunshine
In Raleigh, the average sunshine in September is 9.1h.UV index
In Raleigh, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A maximum UV index of 6 in September translates into the following recommendations:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Frequently asked questions
How hot is September in Raleigh?
What is the average humidity in September in Raleigh?
How many days does it rain in September in Raleigh?
When it does not snow in Raleigh?
What is the average length of the day in September in Raleigh?
When is the sunrise / sunset in September in Raleigh?
How long on average sun shines in September in Raleigh?
What is the UV index reading in September in Raleigh?
Average temperature in September
Raleigh, MS
- Average high temperature in September: 87.3°F
The warmest months (with the highest average high temperature) are July and August (91.4°F).
The month with the lowest average high temperature is January (55°F).
- Average low temperature in September: 67.1°F
The month with the highest average low temperature is August (71.8°F).
The coldest month (with the lowest average low temperature) is January (38.7°F).
Average pressure in September
Raleigh, 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
Raleigh, MS
- Average wind speed in September: 5.2mph
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
Raleigh, MS
- Average humidity in September: 74%
The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Raleigh, MS
- Average rainfall in September: 3.11"
The wettest month (with the highest rainfall) is December (4.02").
The driest month (with the least rainfall) is November (2.13").
Average rainfall days in September
Raleigh, MS
- Average rainfall days in September: 15 days
The month with the highest number of rainy days is July (20.8 days).
The month with the least rainy days is November (8.9 days).
Average snowfall in September
Raleigh, MS
- Average snowfall in September: 0"
The months with the highest snowfall are January and December (0.39").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Raleigh, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.7 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Raleigh, 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 1min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in September
Raleigh, MS
- Average sunshine days in September: 13.1 days
The month with the most sunshine days is October (20 days).
The month with the least sunshine days is July (8.8 days).
Average UV index in September
Raleigh, 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
Raleigh, MS
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 30).
Average visibility in September
Raleigh, MS
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, October, November and December (6mi).
The months with the lowest visibility are May, July, August and September (5mi).
Raleigh, Mississippi, USA
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