September weather forecastCalhoun, GA
September
Weather in September
The arrival of September signals the start of a cooler, gentler season in Calhoun. There is a decrease in the average maximum temperature, which goes down to 83.1°F (28.4°C). September is characterized by a gradual decrease in temperature, indicating the onset of autumn. Days stay longer, but the oppressive heat of the summer slowly recedes giving way to noticeably cooler evenings.Temperature
The onset of September in Calhoun is marked by a minor decrease in temperature, transitioning from a tropical 88.9°F (31.6°C) in August to a moderately hot 83.1°F (28.4°C). In September, Calhoun reports a consistent average low-temperature of 62.2°F (16.8°C) during the nights.Heat index
During September, the heat index is evaluated at a tropical 89.6°F (32°C). If one endures exposure and continues to be active, it might result in tiredness and heat cramps.Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Humidity
In September, the average relative humidity in Calhoun is 75%.Rainfall
September is the month with the least rainfall in Calhoun. Rain falls for 9.5 days and accumulates 1.38" (35mm) of precipitation.Snowfall
April through November are months without snowfall.Daylight
In Calhoun, the average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 7:13 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 7:24 pm EDT.
Sunshine
In Calhoun, the average sunshine in September is 8.4h.UV index
In Calhoun, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 5 during September translates into these guidelines:
Undertake precautions - It is suggested to shield oneself from sunburn. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Calhoun, GA
- Average high temperature in September: 83.1°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (48.2°F).
- Average low temperature in September: 62.2°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).
Average pressure in September
Calhoun, GA
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in September
Calhoun, GA
- Average wind speed in September: 4.3mph
The windiest month (with the highest average wind speed) is February (7.1mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in September
Calhoun, GA
- Average humidity in September: 75%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Calhoun, GA
- Average rainfall in September: 1.38"
The wettest month (with the highest rainfall) is May (2.32").
The driest month (with the least rainfall) is September (1.38").
Average rainfall days in September
Calhoun, GA
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is October (7.8 days).
Average snowfall in September
Calhoun, GA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.55").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Calhoun, GA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Calhoun, GA
- Average daylight in September: 12h and 24min
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 24min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Calhoun, GA
- Average sunshine days in September: 18.9 days
The month with the most sunshine days is October (21.7 days).
The month with the least sunshine days is July (13 days).
Average UV index in September
Calhoun, 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).
Average cloud cover in September
Calhoun, GA
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in September
Calhoun, GA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
