September weather forecastBlack Bayou Junction, MS
September
Weather in September
The first month of the autumn, September, is still a warm month in Black Bayou Junction, Mississippi, with an average temperature varying between 85.5°F (29.7°C) and 66.9°F (19.4°C).Temperature
Black Bayou Junction, Mississippi, experiences an average high-temperature of a moderately hot 85.5°F (29.7°C) with the onset of September, subtly varied from August's 88.9°F (31.6°C). An average low-temperature of 66.9°F (19.4°C) is observed during September nights.Heat index
Throughout September, the heat index is computed to be a fiery hot 95°F (35°C). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.Keep in mind the heat index values are meant for areas in shade and with light wind. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an aggregate value of air's warmth and moisture to show the human-felt temperature. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. 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 particularly important for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. When body heat isn't effectively managed, risks of dehydration and overheating amplify.
Humidity
In Black Bayou Junction, the average relative humidity in September is 71%.Rainfall
September is the month with the least rainfall. Rain falls for 12.5 days and accumulates 1.97" (50mm) of precipitation.Snowfall
In Black Bayou Junction, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 22min.On the first day of September, sunrise is at 6:35 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:46 pm CDT.
Sunshine
In Black Bayou Junction, the average sunshine in September is 9.6h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: The UV index of 5 during September translates into the following guidance:
Be vigilant - Suggestions to stave off sun damage are provided. Around midday, solar radiation is most harmful; hence, exposure should be limited. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Black Bayou Junction, MS
- Average high temperature in September: 85.5°F
The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (50.2°F).
- Average low temperature in September: 66.9°F
The month with the highest average low temperature is July (73.4°F).
The coldest month (with the lowest average low temperature) is January (36.9°F).
Average pressure in September
Black Bayou Junction, MS
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Black Bayou Junction, MS
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is February (9.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
Black Bayou Junction, MS
- Average humidity in September: 71%
The months with the highest relative humidity are February, March and December (78%).
The month with the lowest relative humidity is October (67%).
Average rainfall in September
Black Bayou Junction, MS
- Average rainfall in September: 1.97"
The wettest month (with the highest rainfall) is April (4.72").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in September
Black Bayou Junction, MS
- Average rainfall days in September: 12.5 days
The months with the highest number of rainy days are July and August (17.6 days).
The month with the least rainy days is October (9.3 days).
Average snowfall in September
Black Bayou Junction, MS
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Black Bayou Junction, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.3 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
Black Bayou Junction, 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: 10h and 0min).
- Average sunshine in September: 9h and 36min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in September
Black Bayou Junction, MS
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is October (20.2 days).
The month with the least sunshine days is August (11.1 days).
Average UV index in September
Black Bayou Junction, MS
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in September
Black Bayou Junction, MS
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility in September
Black Bayou Junction, 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).
