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
Stepping into September, Forest records an average high-temperature of a still hot 86.9°F (30.5°C), almost consistent with August. The average low-temperature, in September, is a comfortable 66.9°F (19.4°C).Heat index
For September, the heat index is calculated to be a torrid 98.6°F (37°C). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.Note that heat index values are valued for light wind and location in the shade. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.
Humidity
In September, the average relative humidity in Forest is 73%.Rainfall
In Forest, in September, it is raining for 13.6 days, with typically 2.83" (72mm) of accumulated precipitation. Throughout the year, in Forest, there are 158.3 rainfall days, and 34.84" (885mm) of precipitation is accumulated.Snowfall
March through November are months without snowfall.Daylight
In September, the average length of the day in Forest, Mississippi, is 12h and 22min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:21 pm. On the last day of September, in Forest, sunrise is at 6:51 am and sunset at 6:43 pm CDT.
Sunshine
In Forest, the average sunshine in September is 9.4h.UV index
In Forest, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: The UV index of 5 during September leads to these advisories:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Frequently asked questions
How hot is it in Forest in September?
What is the average humidity in September in Forest?
How much does it rain in Forest in September?
When it does not snow in Forest?
How many hours of daylight does Forest have in September?
When is the sunrise / sunset in September in Forest?
How long on average sun shines in September in Forest?
What is the UV index intensity in September in Forest?
Average temperature in September
Forest, 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
Forest, 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
Forest, 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
Forest, 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
Forest, 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
Forest, 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
Forest, 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
Forest, 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
Forest, 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 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in September
Forest, 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
Forest, 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
Forest, 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
Forest, 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).
Forest, Mississippi, USA
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