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 advent of September, Brookhaven's high-temperatures adjust to a still hot 86.7°F (30.4°C), closely aligning with the preceding month. An average low-temperature of 67.8°F (19.9°C) marks the month of September in Brookhaven.Heat index
September's heat index is calculated to be a very hot 100.4°F (38°C). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.It is important to note that the heat index values are for shaded areas and light wind scenarios. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.
Humidity
The average relative humidity in September in Brookhaven, Mississippi, is 77%.Rainfall
In Brookhaven, in September, it is raining for 15 days, with typically 1.61" (41mm) of accumulated precipitation. Throughout the year, in Brookhaven, there are 147.1 rainfall days, and 20.31" (516mm) of precipitation is accumulated.Snowfall
March through November are months without snowfall in Brookhaven.Daylight
In Brookhaven, Mississippi, the average length of the day in September is 12h and 21min.On the first day of September, sunrise is at 6:37 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:47 pm CDT.
Sunshine
In Brookhaven, the average sunshine in September is 9.2h.UV index
The average daily maximum UV index in September in Brookhaven is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.Note: A daily high UV index of 6 in September leads to these guidelines:
Prevent overexposure. Protection from the sun's harmful effects is needed. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
How hot is it in Brookhaven in September?
What is the average humidity in September in Brookhaven?
How many days does it rain in September in Brookhaven?
When it does not snow in Brookhaven?
What is the average length of the day in September in Brookhaven?
When are sunrise and sunset in September in Brookhaven?
How long on average sun shines in September in Brookhaven?
How high is the UV index in September in Brookhaven?
Average temperature in September
Brookhaven, MS
- Average high temperature in September: 86.7°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (55.6°F).
- Average low temperature in September: 67.8°F
The months with the highest average low temperature are July and August (72.1°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).
Average pressure in September
Brookhaven, 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
Brookhaven, MS
- Average wind speed in September: 4.9mph
The windiest months (with the highest average wind speed) are February and April (7.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in September
Brookhaven, MS
- Average humidity in September: 77%
The months with the highest relative humidity are February and December (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Brookhaven, MS
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is August (2.83").
The driest month (with the least rainfall) is November (0.98").
Average rainfall days in September
Brookhaven, MS
- Average rainfall days in September: 15 days
The month with the highest number of rainy days is August (19 days).
The month with the least rainy days is November (6.5 days).
Average snowfall in September
Brookhaven, MS
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.2").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Brookhaven, MS
- Average snowfall days in September: 0.1 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, October and November (0 days).
Average daylight in September /
Average sunshine in September
Brookhaven, 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 18min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).
Average sunshine days in September
Brookhaven, MS
- Average sunshine days in September: 12.3 days
The month with the most sunshine days is October (22.3 days).
The month with the least sunshine days is August (10 days).
Average UV index in September
Brookhaven, 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
Brookhaven, MS
- Average cloud cover in September: 34
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is October (Cloud cover 30).
Average visibility in September
Brookhaven, MS
- Average visibility in September: 5mi
The months with the highest visibility are April, October and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September and December (5mi).
Brookhaven, Mississippi, USA
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