September weather forecastMadison, MS
September
Weather in September
September unfolds presenting the initial signs of the approaching fall season in Madison, Mississippi. The change in season becomes evident as the temperatures begin to cool off after the peak summer months. The average temperature decreases compared to August make for more pleasant weather and outdoor experiences. However, September upholds the mixed weather pattern of Madison, with sunshine and showers continuing their dance. This month could be categorized as a mildly hot month, with a noticeable drift towards cooler days ahead.Temperature
September's advent in Madison notes a subtle adjustment in average high-temperature to a still hot 87.3°F (30.7°C) from August. Madison experiences an average nighttime temperature of 67.5°F (19.7°C) in the month of September.Heat index
September's heat index is estimated at a sweltering 100.4°F (38°C). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.One should consider that heat index numbers are for shaded settings and light wind. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', integrates the air's temperature and its humidity to showcase the felt temperature by people. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. 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. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.
Humidity
In Madison, the average relative humidity in September is 73%.Rainfall
In Madison, in September, it is raining for 11.9 days, with typically 1.89" (48mm) of accumulated precipitation. In Madison, during the entire year, the rain falls for 152.1 days and collects up to 29.72" (755mm) of precipitation.Snowfall
In Madison, snow does not fall in March through December.Daylight
In Madison, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:24 pm. On the last day of September, in Madison, sunrise is at 6:54 am and sunset at 6:46 pm CDT.
Sunshine
In Madison, the average sunshine in September is 9.7h.UV index
In September, the average daily maximum UV index in Madison is 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 6 in September translates into this advice:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Madison, MS
- Average high temperature in September: 87.3°F
The warmest months (with the highest average high temperature) are July and August (91.8°F).
The month with the lowest average high temperature is January (54.7°F).
- Average low temperature in September: 67.5°F
The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is January (38.5°F).
Average pressure in September
Madison, 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
Madison, MS
- Average wind speed in September: 5.3mph
The windiest months (with the highest average wind speed) are January and February (8mph).
The calmest months (with the lowest average wind speed) are July and August (5.1mph).
Average humidity in September
Madison, MS
- Average humidity in September: 73%
The months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is October (69%).
Average rainfall in September
Madison, MS
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is April (3.46").
The driest month (with the least rainfall) is October (1.81").
Average rainfall days in September
Madison, MS
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is October (8.5 days).
Average snowfall in September
Madison, MS
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.35").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Madison, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (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
Madison, MS
- Average daylight in September: 12h and 24min
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 42min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in September
Madison, MS
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is October (21.4 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in September
Madison, 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
Madison, MS
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 28).
Average visibility in September
Madison, 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).
