September weather forecast
Berkeley Lake, GA

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Berkeley Lake, Georgia, with an average temperature varying between 65.3°F (18.5°C) and 83.8°F (28.8°C).

Temperature

September ushers in a minor alteration in Berkeley Lake's climate, with the average high-temperature moving from August's tropical 89.2°F (31.8°C) to a warm 83.8°F (28.8°C). In September, Berkeley Lake's temperature tends to fall to an average low of 65.3°F (18.5°C) during the night.

Heat index

The heat index in September is computed to be a hot 89.6°F (32°C). If one endures exposure and continues to be active, it might result in tiredness and heat cramps.
One should consider that heat index numbers are for shaded settings and light wind. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', ties air temperature with relative humidity to produce the perceived temperature sensation. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.

Humidity

In September, the average relative humidity in Berkeley Lake is 70%.

Rainfall

In Berkeley Lake, in September, during 12.9 rainfall days, 2.72" (69mm) of precipitation is typically accumulated. In Berkeley Lake, Georgia, during the entire year, the rain falls for 181.5 days and collects up to 44.57" (1132mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

The average length of the day in September in Berkeley Lake is 12h and 22min.
On the first day of the month, sunrise is at 7:10 am and sunset at 8:02 pm. On the last day of September, in Berkeley Lake, sunrise is at 7:31 am and sunset at 7:21 pm EDT.

Sunshine

In Berkeley Lake, Georgia, the average sunshine in September is 8.4h.

UV index

In Berkeley Lake, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Ensure safety - Imperative it is to shield skin and eyes from damage. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
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Frequently asked questions

How hot is September in Berkeley Lake?

The average high-temperature, in September, in Berkeley Lake, is 83.8°F (28.8°C), while the average low-temperature is 65.3°F (18.5°C). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 89.6°F (32°C).

What is the average humidity in September in Berkeley Lake?

The average relative humidity in September is 70%.

How many days does it rain in September in Berkeley Lake?

In September, in Berkeley Lake, the rain falls for 12.9 days. Throughout September, 2.72" (69mm) of precipitation is accumulated.

When it does not snow in Berkeley Lake?

In Berkeley Lake, Georgia, snow does not fall in April through October.

What is the average length of the day in September in Berkeley Lake?

The average day length in September in Berkeley Lake is 12h and 22min.

When is the sunrise / sunset in September in Berkeley Lake?

On the first day of September, sunrise is at 7:10 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 7:21 pm EDT.

How long on average sun shines in September in Berkeley Lake?

In September, the average sunshine duration in Berkeley Lake is 8.4h.

What is the UV index intensity in September in Berkeley Lake?

In September, the average daily maximum UV index in Berkeley Lake, Georgia, is 5. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.
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
Berkeley Lake, GA

Average temperature in September - Berkeley Lake, GA
  • Average high temperature in September: 83.8°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 (49.5°F).

  • Average low temperature in September: 65.3°F

The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (34°F).

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Average pressure in September
Berkeley Lake, GA

Average pressure in September - Berkeley Lake, GA
  • Average pressure in September: 30.03"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).

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Average wind speed in September
Berkeley Lake, GA

Average wind speed in September - Berkeley Lake, GA
  • Average wind speed in September: 5mph

The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).

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Average humidity in September
Berkeley Lake, GA

Average humidity in September - Berkeley Lake, GA
  • Average humidity in September: 70%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (68%).

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Average rainfall in September
Berkeley Lake, GA

Average rainfall in September - Berkeley Lake, GA
  • Average rainfall in September: 2.72"

The wettest month (with the highest rainfall) is August (5.43").
The driest month (with the least rainfall) is October (2.32").

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Average rainfall days in September
Berkeley Lake, GA

Average rainfall days in September - Berkeley Lake, GA
  • Average rainfall days in September: 12.9 days

The month with the highest number of rainy days is July (21 days).
The month with the least rainy days is November (10.4 days).

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Average snowfall in September
Berkeley Lake, GA

Average snowfall in September - Berkeley Lake, GA
  • Average snowfall in September: 0"

The months with the highest snowfall are January and February (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Berkeley Lake, GA

Average snowfall days in September - Berkeley Lake, GA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (1.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Berkeley Lake, GA

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

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in September: 8h and 2min

The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

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Average sunshine days in September
Berkeley Lake, GA

Average sunshine days in September - Berkeley Lake, GA
  • Average sunshine days in September: 15.6 days

The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is July (8.3 days).

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Average UV index in September
Berkeley Lake, GA

Average UV index in September - Berkeley Lake, GA
  • Average UV index in September: 5

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

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Average cloud cover in September
Berkeley Lake, GA

Average cloud cover in September - Berkeley Lake, GA
  • Average cloud cover in September: 32

The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 31).

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Average visibility in September
Berkeley Lake, GA

Average visibility in September - Berkeley Lake, GA
  • Average visibility in September: 6mi

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

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Berkeley Lake, Georgia, USA

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