Heatherbrook
Georgia, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Heatherbrook, GA

The first month of the autumn, September, is also a moderately hot month in Heatherbrook, Georgia, with temperature in the range of an average high of 85.3°F (29.6°C) and an average low of 66°F (18.9°C).

Temperature

In Heatherbrook, the average high-temperature in September is almost the same as in August - a moderately hot 85.3°F (29.6°C). In Heatherbrook, the average low-temperature is 66°F (18.9°C).

Heat index

The average heat index is calculated to a hot 94.6°F (34.8°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'real feel', or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (differences in body mass, height, and shape, pregnancy, metabolic differences). 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 especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

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

Rainfall

In Heatherbrook, during September, the rain falls for 12.5 days and regularly aggregates up to 1.42" (36mm) of precipitation. In Heatherbrook, during the entire year, the rain falls for 152.9 days and collects up to 22.2" (564mm) of precipitation.

Snowfall

In Heatherbrook snow does not fall in March through December.

Daylight

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

Sunshine

The average sunshine in Heatherbrook is 8.6h.

UV index

In Heatherbrook, Georgia, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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 Heatherbrook?

In September, the average high-temperature is 85.3°F (29.6°C), and the average low-temperature is 66°F (18.9°C). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), that combines air temperature and relative humidity, is evaluated at 94.6°F (34.8°C).

What is the average humidity in September in Heatherbrook?

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

How much does it rain in Heatherbrook in September?

In Heatherbrook, Georgia, during September, the rain falls for 12.5 days and regularly aggregates up to 1.42" (36mm) of precipitation.

When it does not snow in Heatherbrook?

In Heatherbrook, Georgia, snow does not fall in March through December.

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

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

How many hours of sunshine does Heatherbrook have in September?

In Heatherbrook, the average sunshine in September is 8.6h.

How high is the UV index in September in Heatherbrook?

The average daily maximum UV index in September in Heatherbrook is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from the exposure to the Sun's UV rays.
Average temperature in September - Heatherbrook, GA
  • Average high temperature in September: 85.3°F

The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (53.2°F).

  • Average low temperature in September: 66°F

The month with the highest average low temperature is July (70.9°F).
The coldest month (with the lowest average low temperature) is January (36.9°F).

Average humidity in September - Heatherbrook, GA
  • Average humidity in September: 73%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is October (71%).

Average rainfall in September - Heatherbrook, GA
  • Average rainfall in September: 1.42"

The wettest month (with the highest rainfall) is August (2.72").
The driest month (with the least rainfall) is October (1.3").

Average rainfall days in September - Heatherbrook, GA
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is July (20.5 days).
The month with the least rainy days is November (7.5 days).

Average snowfall in September - Heatherbrook, GA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.28").
Months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September - Heatherbrook, GA
  • Average snowfall days in September: 0 days

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

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

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in September: 8.6h

The month with the most sunshine is June (Average sunshine: 10.5h).
The month with the least sunshine is December (Average sunshine: 5h).

Average UV index in September - Heatherbrook, GA
  • Average UV index in September: 6

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, February and December (UV index 3).