October weather forecastCharleston International Airport, SC
October
Weather in October
By October, Charleston experiences more profound signs of autumn, with noticeably cooler weather and shorter days. The surmise of temperature fluctuation from 45°F (7.2°C) to 68°F (20°C) ascertains the advent of moderate cold breezes in the evening. The days are characterized by warm sunshine, whereas nights exhibit a noticeable coolness. The decline in the UV index signals lessened exposure to sunlight. October weather is indeed a time of striking transitions and vibrant, earthy hues.Temperature
During Charleston International Airport's transition into October, the average high-temperature lessens, moving from a warm 78.8°F (26°C) in September to an agreeable 68°F (20°C). Charleston International Airport's average low-temperature of 44.6°F (7°C) in October reflects a considerable decline from the daytime peak.Rainfall
The month with the least rainfall is October, when the rain falls for 10 days and typically collects 2.76" (70mm) of precipitation.Daylight
In October, the average length of the day is 11h and 21min.On the first day of the month, sunrise is at 7:14 am and sunset at 7:04 pm. On the last day of October, sunrise is at 7:37 am and sunset at 6:29 pm EDT.
Sunshine
In Charleston International Airport, the average sunshine in October is 6h.UV index
In October, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 5 in October, converts into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Charleston International Airport, SC
- Average high temperature in October: 68°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (41°F).
- Average low temperature in October: 45°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (23°F).
Average rainfall in October
Charleston International Airport, SC
- Average rainfall in October: 2.8"
The wettest month (with the highest rainfall) is July (4.8").
The driest month (with the least rainfall) is October (2.8").
Average rainfall days in October
Charleston International Airport, SC
- Average rainfall days in October: 10 days
The month with the highest number of rainy days is January (15 days).
The months with the least rainy days are September and October (10 days).
Average daylight in October /
Average sunshine in October
Charleston International Airport, SC
- Average daylight in October: 11h and 24min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in October: 6h
The months with the most sunshine are May, June, July and August (Average sunshine: 8h).
The month with the least sunshine is December (Average sunshine: 3h).
Average UV index in October
Charleston International Airport, SC
- Average UV index in October: 5
The months with the highest UV index are June, July and August (UV index 9).
The months with the lowest UV index are January and December (UV index 2).
