September weather forecastSalem, SC
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Salem, South Carolina, with an average temperature fluctuating between 56.8°F (13.8°C) and 77.7°F (25.4°C).Temperature
Salem commences September with an average high-temperature of a still moderately hot 77.7°F (25.4°C), maintaining a close resemblance to the previous month. Salem experiences a nighttime temperature average of 56.8°F (13.8°C) during September.Humidity
In Salem, the average relative humidity in September is 77%.Rainfall
September is the month with the least rainfall. Rain falls for 14.9 days and accumulates 2.44" (62mm) of precipitation.Snowfall
In Salem, South Carolina, snow does not fall in May through September.Daylight
In Salem, South Carolina, the average length of the day in September is 12h and 23min.On the first day of September in Salem, sunrise is at 7:05 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:16 pm EDT.
Sunshine
The average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: A typical high UV index of 4 in September suggests the following recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Salem, SC
- Average high temperature in September: 77.7°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (45°F).
- Average low temperature in September: 56.8°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in September
Salem, SC
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in September
Salem, SC
- Average wind speed in September: 3.9mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).
Average humidity in September
Salem, SC
- Average humidity in September: 77%
The month with the highest relative humidity is December (79%).
The months with the lowest relative humidity are January and November (75%).
Average rainfall in September
Salem, SC
- Average rainfall in September: 2.44"
The wettest months (with the highest rainfall) are April and December (4.96").
The driest month (with the least rainfall) is September (2.44").
Average rainfall days in September
Salem, SC
- Average rainfall days in September: 14.9 days
The month with the highest number of rainy days is June (20 days).
The month with the least rainy days is November (11.2 days).
Average snowfall in September
Salem, SC
- Average snowfall in September: 0"
The month with the highest snowfall is December (6.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Salem, SC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Salem, SC
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 8h and 24min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Salem, SC
- Average sunshine days in September: 12.7 days
The month with the most sunshine days is October (17 days).
The month with the least sunshine days is June (7.5 days).
Average UV index in September
Salem, SC
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Salem, SC
- Average cloud cover in September: 35
The months with the most cloud cover are February, March and December (Cloud cover 44).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in September
Salem, SC
- Average visibility in September: 5mi
The months with the highest visibility are June, July and November (6mi).
The months with the lowest visibility are January, February, March, April, May, August, September, October and December (5mi).
