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
Harperville, Mississippi, experiences an average high-temperature of a still tropical 86.9°F (30.5°C) in September, marking an insignificant shift from 91°F (32.8°C) in August. Harperville reports a consistent average low-temperature of 66.9°F (19.4°C) throughout September nights.Heat index
During September, the heat index is evaluated at a very hot 98.6°F (37°C). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.Bear in mind that the heat index values are determined for shaded areas and light breezes. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.
Humidity
In Harperville, the average relative humidity in September is 73%.Rainfall
In Harperville, in September, it is raining for 13.6 days, with typically 2.83" (72mm) of accumulated precipitation. In Harperville, during the entire year, the rain falls for 158.3 days and collects up to 34.84" (885mm) of precipitation.Snowfall
March through November are months without snowfall in Harperville.Daylight
The average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 6:33 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:43 pm CDT.
Sunshine
The average sunshine in September in Harperville is 9.4h.UV index
The average daily maximum UV index in September in Harperville is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 5 during September translates into these guidelines:
Ensure safety - Sun damage prevention is strongly urged. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September in Harperville?
What is the average humidity in September in Harperville?
How much does it rain in Harperville in September?
When it does not snow in Harperville?
How many hours of daylight does Harperville have in September?
What time are sunrise and sunset in September in Harperville?
How long on average sun shines in September in Harperville?
How high is the UV index in September in Harperville?
Average temperature in September
Harperville, MS
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (54.1°F).
- Average low temperature in September: 66.9°F
The months with the highest average low temperature are July and August (71.4°F).
The coldest month (with the lowest average low temperature) is January (37.8°F).
Average pressure in September
Harperville, 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
Harperville, MS
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is February (8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Harperville, 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
Harperville, MS
- Average rainfall in September: 2.83"
The wettest month (with the highest rainfall) is December (3.39").
The driest month (with the least rainfall) is November (1.93").
Average rainfall days in September
Harperville, MS
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is November (8.2 days).
Average snowfall in September
Harperville, MS
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.43").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Harperville, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.1 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
Harperville, 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 6min).
- Average sunshine in September: 9h and 2min
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 54min).
Average sunshine days in September
Harperville, MS
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is October (21.5 days).
The month with the least sunshine days is August (9.6 days).
Average UV index in September
Harperville, MS
- Average UV index in September: 5
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
Harperville, MS
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in September
Harperville, MS
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, September, October, November and December (6mi).
The months with the lowest visibility are May, July and August (5mi).
Harperville, Mississippi, USA
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