Columbia
South Carolina, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Columbia, SC

The US State House of South Carolina, in Columbia, with the Wade Hampton Statue
The US State House of South Carolina, in Columbia, with the Wade Hampton Statue
September, the first month of the autumn, in Columbia, is also a moderately hot month, with average temperature fluctuating between 85.3°F (29.6°C) and 64.2°F (17.9°C).

Temperature

In September, the average high-temperature marginally drops, from a hot 90.7°F (32.6°C) in August, to a moderately hot 85.3°F (29.6°C). The average low-temperature, in September, is 64.2°F (17.9°C).

Humidity

In Columbia, the average relative humidity in September is 75.9%.

Rainfall

In September, the rain falls for 7.3 days. Throughout September, 3.5" (89.9mm) of precipitation is accumulated. Throughout the year, in Columbia, there are 106.7 rainfall days, and 44.6" (1132.4mm) of precipitation is accumulated.

Snowfall

In Columbia, during the entire year, snow aggregates up to 1.5" (38mm).

Daylight

In Columbia, the average length of the day is 12.4h.

Sunshine

The average sunshine in September is 8h.

UV index

The average daily maximum UV index in Columbia, South Carolina, is 8. A UV Index of 8 to 10 symbolizes a very high health risk from the exposure to the Sun's UV radiation for ordinary individuals.
The daily maximum UV index of 8 interpret into the following advice:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Columbia?

The average high-temperature, in September, is 85.3°F (29.6°C), while the average low-temperature is 64.2°F (17.9°C).

What is the average humidity in September in Columbia?

In Columbia, the average relative humidity in September is 75.9%.

How much does it rain in Columbia in September?

In Columbia, in September, it is raining for 7.3 days, with typically 3.5" (89.9mm) of accumulated precipitation.

What is the average length of the day in September in Columbia?

In Columbia, South Carolina, the average length of the day in September is 12.4h.

How many hours of sunshine does Columbia have in September?

In September, the average sunshine in Columbia, South Carolina, is 8h.

How high is the UV index in September in Columbia?

The average daily maximum UV index in September in Columbia, South Carolina, is 8. A UV Index estimate of 8 to 10 represents a very high health risk from unprotected exposure to the UV radiation.
Average temperature in September - Columbia, SC
  • Average high temperature in September: 85.2°F

The warmest month (with the highest average high temperature) is July (92.7°F).
The month with the lowest average high temperature is January (56°F).

  • Average low temperature in September: 64.2°F

The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (33.7°F).

Average humidity in September - Columbia, SC
  • Average humidity in September: 75.9%

The month with the highest relative humidity is August (76.5%).
The month with the lowest relative humidity is April (62.1%).

Average rainfall in September - Columbia, SC
  • Average rainfall in September: 3.5"

The wettest month (with the highest rainfall) is July (5.5").
The driest month (with the lowest rainfall) is April (2.6").

Average rainfall days in September - Columbia, SC
  • Average rainfall days in September: 7.3 days

The month with the highest number of rainy days is July (11.8 days).
The month with the lowest number of rainy days is October (7 days).

Average snowfall in September - Columbia, SC
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.8").
Months with the lowest snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in September - Columbia, SC
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.5 days).
Months with the lowest number of snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in September / Average sunshine in September - Columbia, SC
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 9.9h).

  • Average sunshine in September: 8h

The month with most sunshine is May (Average sunshine: 9.4h).
Months with least sunshine are January and December (Average sunshine: 5.6).

Average UV index in September - Columbia, SC
  • Average UV index in September: 8

Months with the highest UV index are June, July and August (UV index 10).
Months with the lowest UV index are January and December (UV index 3).