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
With the start of September, Orvisburg measures an average high-temperature of a still tropical 88°F (31.1°C), not significantly differing from August's 91.6°F (33.1°C). September brings an average low-temperature of 69.8°F (21°C) to Orvisburg.Heat index
Throughout September, the heat index is estimated at a scorching 104°F (40°C). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.Bear in mind that the heat index values are determined for shaded areas and light breezes. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'real feel', offers an insight into how hot it feels when we factor in moisture content. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. 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 is 76%.Rainfall
In Orvisburg, in September, during 17.2 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. Throughout the year, there are 163.9 rainfall days, and 24.29" (617mm) of precipitation is accumulated.Snowfall
In Orvisburg, snow does not fall in February through November.Daylight
In Orvisburg, the average length of the day in September is 12h and 20min.On the first day of September, sunrise is at 6:34 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:44 pm CDT.
Sunshine
The average sunshine in September is 9.4h.UV index
In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 6 during September translates into the following recommendations:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September in Orvisburg?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Orvisburg have in September?
How high is the UV index in September?
Average temperature in September
Orvisburg, MS
- Average high temperature in September: 88°F
The warmest month (with the highest average high temperature) is August (91.6°F).
The month with the lowest average high temperature is January (58.5°F).
- Average low temperature in September: 69.8°F
The months with the highest average low temperature are July and August (73.9°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).
Average pressure in September
Orvisburg, MS
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).
Average wind speed in September
Orvisburg, MS
- Average wind speed in September: 4.5mph
The windiest month (with the highest average wind speed) is April (6.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.2mph).
Average humidity in September
Orvisburg, MS
- Average humidity in September: 76%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Orvisburg, MS
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is August (3.62").
The driest month (with the least rainfall) is November (1.18").
Average rainfall days in September
Orvisburg, MS
- Average rainfall days in September: 17.2 days
The month with the highest number of rainy days is July (22 days).
The month with the least rainy days is November (7.4 days).
Average snowfall in September
Orvisburg, MS
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.24").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Orvisburg, MS
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are February, March, April, May, June, July, August, October and November (0 days).
Average daylight in September /
Average sunshine in September
Orvisburg, MS
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The months with the least sunshine are February and December (Average sunshine: 5h and 0min).
Average sunshine days in September
Orvisburg, MS
- Average sunshine days in September: 10.1 days
The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is July (6.5 days).
Average UV index in September
Orvisburg, MS
- Average UV index in September: 6
The months with the highest UV index are May, 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
Orvisburg, MS
- Average cloud cover in September: 31
The month with the most cloud cover is December (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in September
Orvisburg, MS
- Average visibility in September: 5mi
The months with the highest visibility are June, August, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, September and December (5mi).
Orvisburg, Mississippi, USA
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