Alpharetta Weather Year-Round — Best Time to Visit
Alpharetta, United States has mild weather year-round. The best time to visit is May (score: 85/100). Annual average high: 21°C, total rainfall: 1279mm.
When is the best time to visit Alpharetta?
85
May is the best month to visit Alpharetta with a travel score of 85/100 (Excellent).
Expect highs of 25.5°C, 10 rain days, and 10.9 hours of daily sunshine.
View May weather details →Travel Score by Month
57
Jan
60
Feb
69
Mar
79
Apr
85
May
80
Jun
77
Jul
79
Aug
84
Sep
81
Oct
69
Nov
57
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Alpharetta each month?
21°C
Avg High
11.7°C
Avg Low
1279mm
Annual Rain
How much rain does Alpharetta get?
Alpharetta receives 1279mm of rain annually. The wettest month is typically March with 119mm, while October is the driest.
What is the weather like each month in Alpharetta?
January
57
10°C
Low: 2°C
10 rain days
Mixed
February
60
13°C
Low: 3°C
10 rain days
Mixed
March
69
17°C
Low: 7°C
10 rain days
Good
April
79
21°C
Low: 11°C
9 rain days
Good
May
Best time to visit85
26°C
Low: 15°C
10 rain days
Excellent
June
80
29°C
Low: 20°C
13 rain days
Good
July
77
30°C
Low: 21°C
15 rain days
Good
August
79
30°C
Low: 21°C
13 rain days
Good
September
84
27°C
Low: 18°C
9 rain days
Excellent
October
81
22°C
Low: 12°C
7 rain days
Excellent
November
69
16°C
Low: 7°C
8 rain days
Good
December
57
12°C
Low: 3°C
10 rain days
Mixed
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Data based on 1994–2024 averages · Last updated: 2024-12-31