October weather forecastAlpharetta, GA
October
Weather in October
In October, Alpharetta embraces the essence of autumn, with a substantial temperature difference from the September highs of 83.5°F (28.6°C). The noticeable drop in rainfall affirms the cessation of the rainy season. Shortened daylight hours and an increment in wind speed reinforce the cool ambiance of fall. Despite the receding cloud cover, reduced visibility adds a misty characteristic to the weather. With the departure of warm, humid climate, October ushers in crisp fall weather, preparing residents for the impending winter.Temperature
October suggests a modest reduction in the average high-temperature, shifting from a moderately hot 83.5°F (28.6°C) in September to an agreeable 72°F (22.2°C). In Alpharetta, the expected average low-temperature for October is a fresh 52.7°F (11.5°C).Humidity
In October, the average relative humidity in Alpharetta is 71%.Rainfall
October is the month with the least rainfall. Rain falls for 9 days and accumulates 1.34" (34mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in October is 11h and 19min.On the first day of October, sunrise is at 7:32 am and sunset at 7:21 pm. On the last day of the month, sunrise is at 7:56 am and sunset at 6:44 pm EDT.
Sunshine
In Alpharetta, the average sunshine in October is 7.1h.UV index
In October, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In October, the maximum UV index of 4 translates into these guidelines:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Alpharetta, GA
- Average high temperature in October: 72°F
The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (49.1°F).
- Average low temperature in October: 52.7°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (33.6°F).
Average pressure in October
Alpharetta, GA
- Average pressure in October: 30.06"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).
Average wind speed in October
Alpharetta, GA
- Average wind speed in October: 6mph
The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in October
Alpharetta, GA
- Average humidity in October: 71%
The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are July and August (69%).
Average rainfall in October
Alpharetta, GA
- Average rainfall in October: 1.34"
The wettest month (with the highest rainfall) is August (3.58").
The driest month (with the least rainfall) is October (1.34").
Average rainfall days in October
Alpharetta, GA
- Average rainfall days in October: 9 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is October (9 days).
Average snowfall in October
Alpharetta, GA
- Average snowfall in October: 0"
The month with the highest snowfall is January (0.71").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in October
Alpharetta, GA
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is February (1.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in October /
Average sunshine in October
Alpharetta, GA
- Average daylight in October: 11h and 18min
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 October: 7h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in October
Alpharetta, GA
- Average sunshine days in October: 20.5 days
The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (10.1 days).
Average UV index in October
Alpharetta, GA
- Average UV index in October: 4
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 October
Alpharetta, GA
- Average cloud cover in October: 31
The months with the most cloud cover are February and December (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in October
Alpharetta, GA
- Average visibility in October: 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).
