September weather forecastBrookhaven, MS
September
Weather in September
September in Brookhaven carries the last traces of summer with it, complemented by a noticeable drop in temperature. Despite being a transition month, it holds a high rainfall level of 0.08" (2mm). A noteworthy drop can be observed in the average daylight hours from the preceding summer months. However, September stands as the threshold to fall, offering a comparative relief from the high heat levels. The residents start gearing up to welcome the delightful fall season as September concludes.Temperature
The advent of September brings an average high-temperature of a still tropical 86.7°F (30.4°C), almost identical to the preceding month. During September, the nighttime temperature averages of 67.8°F (19.9°C).Heat index
September's heat index is appraised at a torrid 100.4°F (38°C). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.It is important to note that the heat index values are for shaded areas and light wind scenarios. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', arises from combining readings of air temperature and relative moisture content. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.
Humidity
In Brookhaven, the average relative humidity in September is 77%.Rainfall
In Brookhaven, in September, it is raining for 15 days, with typically 1.61" (41mm) of accumulated precipitation. In Brookhaven, during the entire year, the rain falls for 147.1 days and collects up to 20.31" (516mm) of precipitation.Snowfall
March through November are months without snowfall.Daylight
In September, the average length of the day is 12h and 21min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:25 pm. On the last day of September, sunrise is at 6:55 am and sunset at 6:47 pm CDT.
Sunshine
In September, the average sunshine in Brookhaven is 9.2h.UV index
In Brookhaven, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.Note: A daily high UV index of 6 in September leads to these guidelines:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 18min
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 12min
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).
