September weather forecast
Byram, MS

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Weather in September

The first month of the autumn, September, is still a hot month in Byram, Mississippi, with an average temperature varying between 87.4°F (30.8°C) and 67.6°F (19.8°C).

Temperature

Byram records an average high-temperature of a still tropical 87.4°F (30.8°C) in September, maintaining a close correlation with August's 91.8°F (33.2°C). Byram's nighttime temperature during September is consistently averaged at a comfortable 67.6°F (19.8°C).

Heat index

Throughout September, the heat index is evaluated at a fiery hot 100.4°F (38°C). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

The average relative humidity in September is 73%.

Rainfall

In Byram, in September, during 14.1 rainfall days, 2.8" (71mm) of precipitation is typically accumulated. Throughout the year, in Byram, Mississippi, there are 169.5 rainfall days, and 38.82" (986mm) of precipitation is accumulated.

Snowfall

In Byram, snow does not fall in April through November.

Daylight

The average length of the day in September in Byram, Mississippi, is 12h and 21min.
On the first day of September in Byram, sunrise is at 6:36 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:46 pm CDT.

Sunshine

In September, the average sunshine in Byram is 9.6h.

UV index

In September, the average daily maximum UV index in Byram is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index of 6 during September translates into these guidelines:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
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Frequently asked questions

How hot is September in Byram?

An average high-temperature, in September, in Byram, is 87.4°F (30.8°C) and the average low-temperature is 67.6°F (19.8°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, in September is evaluated at 100.4°F (38°C).

What is the average humidity in September in Byram?

In September, the average relative humidity in Byram is 73%.

How many days does it rain in September in Byram?

In September, the rain falls for 14.1 days. Throughout September, 2.8" (71mm) of precipitation is accumulated.

When it does not snow in Byram?

In Byram, snow does not fall in April through November.

How many hours of daylight does Byram have in September?

In September, the average day length in Byram, Mississippi, is 12h and 21min.

When is the sunrise / sunset in September in Byram?

On the first day of September in Byram, sunrise is at 6:36 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:46 pm CDT.

How long on average sun shines in September in Byram?

In September, the average sunshine duration in Byram is 9.6h.

What is the UV index intensity in September in Byram?

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Byram, MS

Average temperature in September - Byram, MS
  • Average high temperature in September: 87.4°F

The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (54.7°F).

  • Average low temperature in September: 67.6°F

The month with the highest average low temperature is July (72.5°F).
The coldest month (with the lowest average low temperature) is January (38.7°F).

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Average pressure in September
Byram, MS

Average pressure in September - Byram, 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).

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Average wind speed in September
Byram, MS

Average wind speed in September - Byram, MS
  • Average wind speed in September: 5.2mph

The windiest month (with the highest average wind speed) is February (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).

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Average humidity in September
Byram, MS

Average humidity in September - Byram, MS
  • Average humidity in September: 73%

The months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is October (69%).

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Average rainfall in September
Byram, MS

Average rainfall in September - Byram, MS
  • Average rainfall in September: 2.8"

The wettest month (with the highest rainfall) is April (3.94").
The driest month (with the least rainfall) is November (2.36").

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Average rainfall days in September
Byram, MS

Average rainfall days in September - Byram, MS
  • Average rainfall days in September: 14.1 days

The month with the highest number of rainy days is August (19.9 days).
The month with the least rainy days is November (9.2 days).

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Average snowfall in September
Byram, MS

Average snowfall in September - Byram, MS
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.55").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Byram, MS

Average snowfall days in September - Byram, MS
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Byram, MS

Average daylight in September / Average sunshine in September - Byram, 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 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 54min).

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Average sunshine days in September
Byram, MS

Average sunshine days in September - Byram, MS
  • Average sunshine days in September: 13.8 days

The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is July (9.3 days).

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Average UV index in September
Byram, MS

Average UV index in September - Byram, 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 and December (UV index 3).

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Average cloud cover in September
Byram, MS

Average cloud cover in September - Byram, MS
  • Average cloud cover in September: 29

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 28).

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Average visibility in September
Byram, MS

Average visibility in September - Byram, 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).

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Byram, Mississippi, USA

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