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

September weather forecast and climate
Helena, GA

September, the first month of the autumn, in Helena, is still a warm month, with average temperature ranging between max 85.1°F (29.5°C) and min 68.2°F (20.1°C).

Temperature

In Helena, the average high-temperature is practically the same as in August - a moderately hot 85.1°F (29.5°C). In September, in Helena, the average low-temperature is 68.2°F (20.1°C).

Heat index

The average heat index in September is calculated to a sweltering 95.4°F (35.2°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. 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', 'feels like', or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (pregnancy, clothing, 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. 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.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

The average relative humidity in September is 76%.

Rainfall

The month with the least rainfall is September when the rain falls for 11.9 days and typically collects 0.83" (21mm) of precipitation.

Snowfall

In Helena snow does not fall in February through December.

Daylight

The average length of the day in September is 12.3h.

Sunshine

In Helena, Georgia, the average sunshine is 8.6h.

UV index

In September, the average daily maximum UV index in Helena is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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 Helena?

The average high-temperature, in September, in Helena, Georgia, is 85.1°F (29.5°C), while the average low-temperature is 68.2°F (20.1°C). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that combines both air temperature and relative humidity, is appraised at 95.4°F (35.2°C).

What is the average humidity in September in Helena?

In Helena, Georgia, the average relative humidity in September is 76%.

How many days does it rain in September in Helena?

In Helena, Georgia, during September, the rain falls for 11.9 days and regularly aggregates up to 0.83" (21mm) of precipitation.

What is the driest month in Helena?

The month with the least rainfall in Helena is September when the rain falls for 11.9 days and typically collects 0.83" (21mm) of precipitation.

When it does not snow in Helena?

February through December are months without snowfall in Helena, Georgia.

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

The average length of the day in September in Helena, Georgia, is 12.3h.

How many hours of sunshine does Helena have in September?

The average sunshine in September in Helena, Georgia, is 8.6h.

How high is the UV index in September in Helena?

In September, the average daily maximum UV index in Helena, Georgia, is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in September - Helena, GA
  • Average high temperature in September: 85.1°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 (56.8°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 (40.6°F).

Average humidity in September - Helena, GA
  • Average humidity in September: 76%

The month with the highest relative humidity is December (77%).
Months with the lowest relative humidity are January and November (71%).

Average rainfall in September - Helena, GA
  • Average rainfall in September: 0.83"

The wettest month (with the highest rainfall) is August (2.05").
The driest month (with the least rainfall) is September (0.83").

Average rainfall days in September - Helena, GA
  • Average rainfall days in September: 11.9 days

The month with the highest number of rainy days is August (17.3 days).
The month with the least rainy days is November (6.7 days).

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

The month with the highest number of snowfall days is January (0.1 days).
Months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).

Average daylight in September / Average sunshine in September - Helena, GA
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 14.2h).
The month with the shortest days is December (Average daylight: 10.1h).

  • Average sunshine in September: 8.6h

Months with the most sunshine are June and July (Average sunshine: 10.7h).
The month with the least sunshine is December (Average sunshine: 5.3h).

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

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