September weather forecast
Donegal, GA

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Donegal, Georgia, with an average temperature fluctuating between 68.2°F (20.1°C) and 84.7°F (29.3°C).

Temperature

The advent of September brings an average high-temperature of a moderately hot 84.7°F (29.3°C), almost identical to the preceding month. During September, the temperature is averaged to a low of 68.2°F (20.1°C) at night.

Heat index

The average heat index in September is computed to be a sweltering 95°F (35°C). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

In Donegal, the average relative humidity in September is 77%.

Rainfall

In September, the rain falls for 13.1 days. Throughout September, 0.98" (25mm) of precipitation is accumulated. Throughout the year, there are 140.8 rainfall days, and 17.09" (434mm) of precipitation is accumulated.

Snowfall

March through December are months without snowfall.

Daylight

In September, the average length of the day is 12h and 22min.
On the first day of September, sunrise is at 7:02 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:12 pm EDT.

Sunshine

The average sunshine in September is 8.5h.

UV index

In Donegal, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: A daily maximum UV index of 6 in September translates into the following instructions:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Updated: Jul 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in September?

The high-temperature during September is 84.7°F (29.3°C) and the low-temperature is 68.2°F (20.1°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in September is computed to be 95°F (35°C).

What is the average humidity in September in Donegal?

The average relative humidity in September is 77%.

How much does it rain in September?

In Donegal, during September, the rain falls for 13.1 days and regularly aggregates up to 0.98" (25mm) of precipitation.

When it does not snow?

In Donegal, snow does not fall in March through December.

What is the average length of the day in September?

In September, the average day length is 12h and 22min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 7:02 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 7:12 pm EDT.

How many hours of sunshine does Donegal have in September?

The average sunshine duration in September is 8.5h.

What is the UV index reading in September?

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Donegal, GA

Average temperature in September - Donegal, GA
  • Average high temperature in September: 84.7°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (56.1°F).

  • Average low temperature in September: 68.2°F

The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (40.1°F).

Average pressure in September
Donegal, GA

Average pressure in September - Donegal, GA
  • Average pressure in September: 30"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

Average wind speed in September
Donegal, GA

Average wind speed in September - Donegal, GA
  • Average wind speed in September: 5.9mph

The windiest month (with the highest average wind speed) is April (7.7mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in September
Donegal, GA

Average humidity in September - Donegal, GA
  • Average humidity in September: 77%

The month with the highest relative humidity is August (78%).
The month with the lowest relative humidity is January (71%).

Average rainfall in September
Donegal, GA

Average rainfall in September - Donegal, GA
  • Average rainfall in September: 0.98"

The wettest month (with the highest rainfall) is August (2.44").
The driest month (with the least rainfall) is November (0.75").

Average rainfall days in September
Donegal, GA

Average rainfall days in September - Donegal, GA
  • Average rainfall days in September: 13.1 days

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is November (5.8 days).

Average snowfall in September
Donegal, GA

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

The months with the highest snowfall are January and February (0.04").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September
Donegal, GA

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

The month with the highest number of snowfall days is February (0.3 days).
The 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
Donegal, GA

Average daylight in September / Average sunshine in September - Donegal, GA
  • Average daylight in September: 12h and 2min

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 6min).

  • Average sunshine in September: 8h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

Average sunshine days in September
Donegal, GA

Average sunshine days in September - Donegal, GA
  • Average sunshine days in September: 13.9 days

The month with the most sunshine days is November (22.1 days).
The month with the least sunshine days is August (8.9 days).

Average UV index in September
Donegal, GA

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

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

Average cloud cover in September
Donegal, GA

Average cloud cover in September - Donegal, GA
  • Average cloud cover in September: 33

The months with the most cloud cover are February and December (Cloud cover 42).
The month with the least cloud cover is October (Cloud cover 29).

Average visibility in September
Donegal, GA

Average visibility in September - Donegal, GA
  • Average visibility in September: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).

Donegal, Georgia, USA

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