September weather forecastBlue Mountain, MS
September
Weather in September
September, the first month of the autumn in Blue Mountain, is still a warm month, with an average temperature fluctuating between 84°F (28.9°C) and 64.4°F (18°C).Temperature
With the beginning of September, the average high-temperature shows a small decrease, transitioning from a tropical 89.4°F (31.9°C) in August to a moderately hot 84°F (28.9°C). Throughout September, a steady low-temperature average of 64.4°F (18°C) is noted.Heat index
Throughout September, the heat index is appraised at a hot 91.4°F (33°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.Heat index specifics point out values are for conditions of shade and a slight breeze. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely 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.
Humidity
The average relative humidity in September is 73%.Rainfall
September is the month with the least rainfall. Rain falls for 13.1 days and accumulates 2.13" (54mm) of precipitation.Snowfall
In Blue Mountain, snow does not fall in April through October.Daylight
In Blue Mountain, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:29 am and sunset at 7:22 pm. On the last day of September, sunrise is at 6:50 am and sunset at 6:41 pm CDT.
Sunshine
In September, the average sunshine is 9.3h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 5 during September translates into the following directions:
Guard yourself - Precautionary measures against sun damage are advocated. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Blue Mountain, MS
- Average high temperature in September: 84°F
The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (47.5°F).
- Average low temperature in September: 64.4°F
The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).
Average pressure in September
Blue Mountain, MS
- Average pressure in September: 30.01"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
Blue Mountain, MS
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is February (8mph).
The calmest month (with the lowest average wind speed) is July (4.7mph).
Average humidity in September
Blue Mountain, MS
- Average humidity in September: 73%
The months with the highest relative humidity are March and December (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Blue Mountain, MS
- Average rainfall in September: 2.13"
The wettest month (with the highest rainfall) is February (4.8").
The driest month (with the least rainfall) is September (2.13").
Average rainfall days in September
Blue Mountain, MS
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (10.3 days).
Average snowfall in September
Blue Mountain, MS
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.55").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Blue Mountain, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.7 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Blue Mountain, MS
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 9h and 18min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
Blue Mountain, MS
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is July (11.5 days).
Average UV index in September
Blue Mountain, MS
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Blue Mountain, MS
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are June, August and September (Cloud cover 29).
Average visibility in September
Blue Mountain, 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).
