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
Merry Hell marks the start of September with an average high-temperature of a still tropical 87.3°F (30.7°C), hinting at a slight fluctuation from August's 91.4°F (33°C). In September, Merry Hell records an average nighttime temperature of 67.3°F (19.6°C).Heat index
The average heat index in September is appraised at a torrid 100.4°F (38°C). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.Given the heat index, its values are aligned with shaded sites and gentle winds. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', measures the perceived warmth when incorporating the humidity present in the air. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.
Humidity
The average relative humidity in September is 74%.Rainfall
In Merry Hell, Mississippi, in September, it is raining for 14.2 days, with typically 1.73" (44mm) of accumulated precipitation. In Merry Hell, during the entire year, the rain falls for 151.1 days and collects up to 22.28" (566mm) of precipitation.Snowfall
March through November are months without snowfall.Daylight
In Merry Hell, the average length of the day in September is 12h and 21min.On the first day of September, sunrise is at 6:34 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:44 pm CDT.
Sunshine
In September, the average sunshine is 9.4h.UV index
In Merry Hell, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for average individuals.Note: In September, the maximum UV index of 6 transforms into these recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
How much 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 Merry Hell have in September?
What is the UV index intensity in September?
Average temperature in September
Merry Hell, 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 (55.2°F).
- Average low temperature in September: 67.3°F
The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (38.7°F).
Average pressure in September
Merry Hell, 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
Merry Hell, MS
- Average wind speed in September: 5.1mph
The windiest months (with the highest average wind speed) are January and February (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in September
Merry Hell, 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
Merry Hell, MS
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is August (2.76").
The driest month (with the least rainfall) is November (1.1").
Average rainfall days in September
Merry Hell, MS
- Average rainfall days in September: 14.2 days
The month with the highest number of rainy days is July (19.5 days).
The month with the least rainy days is November (7.5 days).
Average snowfall in September
Merry Hell, MS
- Average snowfall in September: 0"
The months with the highest snowfall are January and December (0.28").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Merry Hell, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.6 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
Merry Hell, 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 2min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in September
Merry Hell, MS
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is October (21.2 days).
The months with the least sunshine days are July and August (9.3 days).
Average UV index in September
Merry Hell, 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
Merry Hell, MS
- Average cloud cover in September: 31
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
Merry Hell, 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).
Merry Hell, Mississippi, USA
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