Holly Springs
Georgia, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Holly Springs, GA

The first month of the autumn, September, is still a warm month in Holly Springs, Georgia, with average temperature ranging between min 63.3°F (17.4°C) and max 82.6°F (28.1°C).

Temperature

In Holly Springs, the average high-temperature is essentially the same as in August - a warm 82.6°F (28.1°C). In Holly Springs, the average low-temperature is 63.3°F (17.4°C).

Heat index

In September, the average heat index is estimated at a tropical 88.3°F (31.3°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'feels like', or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like activity, wind, metabolic differences, and pregnancy affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In September, the average relative humidity in Holly Springs is 73%.

Rainfall

In Holly Springs, during 12.8 rainfall days, 2.64" (67mm) of precipitation is typically accumulated. Throughout the year, in Holly Springs, there are 178.9 rainfall days, and 42.95" (1091mm) of precipitation is accumulated.

Snowfall

In Holly Springs snow does not fall in April through October.

Daylight

The average length of the day in Holly Springs is 12.4h.

Sunshine

The average sunshine in September is 8.5h.

UV index

In Holly Springs, Georgia, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 5 in September transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Holly Springs?

In Holly Springs, Georgia, in September, the average high-temperature is 82.6°F (28.1°C), and the average low-temperature is 63.3°F (17.4°C). In September, the average heat index (a.k.a. 'feels like', 'real feel'), that takes the relative humidity and factores it into the air temperature reading, is calculated to 88.3°F (31.3°C).

What is the average humidity in September in Holly Springs?

The average relative humidity in September in Holly Springs, Georgia, is 73%.

How many days does it rain in September in Holly Springs?

In Holly Springs, Georgia, in September, during 12.8 rainfall days, 2.64" (67mm) of precipitation is typically accumulated.

When it does not snow in Holly Springs?

April through October are months without snowfall in Holly Springs.

How many hours of daylight does Holly Springs have in September?

In Holly Springs, Georgia, the average length of the day in September is 12.4h.

How long on average sun shines in September in Holly Springs?

In September, the average sunshine in Holly Springs, Georgia, is 8.5h.

What is the UV index intensity in September in Holly Springs?

In Holly Springs, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unsafe exposure to the Sun's UV rays.
Average temperature in September - Holly Springs, GA
  • Average high temperature in September: 82.6°F

The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is January (48.2°F).

  • Average low temperature in September: 63.3°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (32.9°F).

Average humidity in September - Holly Springs, GA
  • Average humidity in September: 73%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September - Holly Springs, GA
  • Average rainfall in September: 2.64"

The wettest months (with the highest rainfall) are May and August (4.25").
The driest month (with the least rainfall) is October (2.52").

Average rainfall days in September - Holly Springs, GA
  • Average rainfall days in September: 12.8 days

The month with the highest number of rainy days is June (19.1 days).
The month with the least rainy days is November (9.9 days).

Average snowfall in September - Holly Springs, GA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (1.02").
Months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September - Holly Springs, GA
  • Average snowfall days in September: 0 days

Months with the highest number of snowfall days are January and February (1.8 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in September / Average sunshine in September - Holly Springs, GA
  • Average daylight in September: 12.4h

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

  • Average sunshine in September: 8.5h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is December (Average sunshine: 5h).

Average UV index in September - Holly Springs, GA
  • Average UV index in September: 5

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January and December (UV index 2).