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
The transition into September shows a subtle variation to a moderately hot 84°F (28.9°C) from August's 88.9°F (31.6°C) in the average high-temperature. In Martins Crossroads, the average low-temperature during the month of September is a refreshing 67.1°F (19.5°C).Heat index
The average heat index in September is estimated at a tropical 93.2°F (34°C). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including 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 are particularly important for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Humidity
In Martins Crossroads, the average relative humidity in September is 78%.Rainfall
In Martins Crossroads, during September, the rain falls for 16 days and regularly aggregates up to 3.03" (77mm) of precipitation. In Martins Crossroads, during the entire year, the rain falls for 168.1 days and collects up to 33.43" (849mm) of precipitation.Snowfall
March through December are months without snowfall.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:54 am and sunset at 7:45 pm. On the last day of September, sunrise is at 7:14 am and sunset at 7:05 pm EDT.
Sunshine
In September, the average sunshine is 9.1h.UV index
In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The daily high UV index of 6 in September translates into this advice:
Resist extreme sun exposure. Guarding against solar damage is essential. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Martins Crossroads, SC
- Average high temperature in September: 84°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (53.8°F).
- Average low temperature in September: 67.1°F
The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).
Average pressure in September
Martins Crossroads, SC
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in September
Martins Crossroads, SC
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
Martins Crossroads, SC
- Average humidity in September: 78%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is January (73%).
Average rainfall in September
Martins Crossroads, SC
- Average rainfall in September: 3.03"
The wettest month (with the highest rainfall) is August (4.76").
The driest month (with the least rainfall) is January (1.46").
Average rainfall days in September
Martins Crossroads, SC
- Average rainfall days in September: 16 days
The month with the highest number of rainy days is July (22.3 days).
The month with the least rainy days is November (8.1 days).
Average snowfall in September
Martins Crossroads, SC
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (0.24").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Martins Crossroads, SC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.6 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Martins Crossroads, SC
- Average daylight in September: 12h and 2min
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 1min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 42min).
Average sunshine days in September
Martins Crossroads, SC
- Average sunshine days in September: 12.3 days
The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is July (6.1 days).
Average UV index in September
Martins Crossroads, SC
- Average UV index in September: 6
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in September
Martins Crossroads, SC
- Average cloud cover in September: 33
The months with the most cloud cover are February and December (Cloud cover 41).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in September
Martins Crossroads, SC
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Martins Crossroads, South Carolina, USA
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