September weather forecast
South Carolina, USA

September in South Carolina is a month of metamorphosis, as the intense heat of summer starts to wane and the initial whispers of autumn become evident. Coastal locales, such as Charleston, experience temperatures that fluctuate from 65°F (18.3°C) to 84°F (28.9°C). Days remain warm, but there's a notable crispness in the air, especially during the early mornings and late evenings.

In the Midlands, cities like Columbia witness a significant reduction in the heat that dominated the previous months. While afternoons can still be quite warm, the intensity of the summer sun diminishes. The Upstate, influenced by the Blue Ridge Mountains, begins to showcase some early signs of fall, especially in regions of higher elevation where foliage starts to change its hue.

September's declining temperatures are paired with diminishing humidity, making the outdoors more inviting. Occasional rain showers might punctuate the month, but they tend to be less intense and less frequent than the summer storms. The skies often exhibit a deep blue hue, emblematic of the clear, drier air.

When contrasted with August, September's cooler and less humid environment is evident. The transition from the stifling summer months to the milder autumn ones is welcomed by many. As September draws to a close, South Carolina gears up for the full splendor of fall, with October promising a display of vibrant colors and even cooler temperatures.

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• Columbia - September »
  On the first day of September in Columbia, sunrise is at 6:58 am and sunset at 7:49 pm. September in Columbia witnesses a gentle descent in average high-temperature, descending from August's tropical 90.1°F (32.3°C) to a warm 84.6°F (29.2°C).
• Charleston - September »
  On the first day of September in Charleston sunrise is at 6:54 am and sunset at 7:44 pm. In September, in Charleston the rain falls for 18.4 days.
• North Charleston - September »
  In North Charleston during September, the rain falls for 14.8 days and regularly aggregates up to 2.76" (70mm) of precipitation. In North Charleston during September, the rain falls for 14.8 days and regularly aggregates up to 2.76" (70mm) of precipitation.
• Mount Pleasant - September »
  On the last day of September, in Mount Pleasant, sunrise is at 7:13 am and sunset at 7:04 pm EDT. It's the beginning of fall in September in Mount Pleasant, broadly characterized by the decrease in daily high temperature down to 83.3°F (28.5°C).
• Rock Hill - September »
  The month with the least rainfall in Rock Hill is September, when the rain falls for 11.2 days and typically collects 1.97" (50mm) of precipitation. In Rock Hill, South Carolina, in September, it is raining for 11.2 days, with typically 1.97" (50mm) of accumulated precipitation.
• Greenville - September »
  The month with the least rainfall in Greenville, South Carolina, is September, when the rain falls for 11.6 days and typically collects 1.57" (40mm) of precipitation. The month with the least rainfall in Greenville is September, when the rain falls for 11.6 days and typically collects 1.57" (40mm) of precipitation.
• Summerville - September »
  On the last day of September, in Summerville sunrise is at 7:14 am and sunset at 7:06 pm EDT. In Summerville in September, it is raining for 11.2 days, with typically 1.1" (28mm) of accumulated precipitation.
• Goose Creek - September »
  September in Goose Creek marks the beginning of fall as the summer heat starts to recede. In Goose Creek in September, during 16.5 rainfall days, 4.02" (102mm) of precipitation is typically accumulated.
• Sumter - September »
  As Sumter moves from September into October anticipate a further decline in temperature, an upsurge in wind speeds, and shorter daylight hours, setting the perfect stage for the full onset of autumn. On the last day of September, in Sumter, sunrise is at 7:15 am and sunset at 7:06 pm EDT.
• Hilton Head Island - September »
  In Hilton Head Island in September, the average water temperature is 81.7°F (27.6°C). In Hilton Head Island, during September, the rain falls for 17.9 days and regularly aggregates up to 3.78" (96mm) of precipitation.
• Florence - September »
  In Florence during September, the rain falls for 14.5 days and regularly aggregates up to 2.95" (75mm) of precipitation. Florence, South Carolina, marks the onset of September with an average high-temperature of a moderately hot 83.7°F (28.7°C), subtly divergent from August's 88.3°F (31.3°C).
• Spartanburg - September »
  The month with the least rainfall in Spartanburg is September, when the rain falls for 11.6 days and typically collects 1.54" (39mm) of precipitation. In Spartanburg, during September, the rain falls for 11.6 days and regularly aggregates up to 1.54" (39mm) of precipitation.