Average data for 10 years
1 January
Monday
+9°
+5°
2 January
Tuesday
+6°
+4°
3 January
Wednesday
+6°
+1°
4 January
Thursday
+8°
+3°
5 January
Friday
+8°
+3°
6 January
Saturday
+8°
+5°
7 January
Sunday
+7°
+3°
8 January
Monday
+6°
+2°
9 January
Tuesday
+8°
+2°
10 January
Wednesday
+9°
+5°
11 January
Thursday
+10°
+6°
12 January
Friday
+10°
+5°
13 January
Saturday
+9°
+4°
14 January
Sunday
+10°
+5°
15 January
Monday
+9°
+6°
16 January
Tuesday
+9°
+5°
17 January
Wednesday
+10°
+5°
18 January
Thursday
+9°
+5°
19 January
Friday
+10°
+4°
20 January
Saturday
+10°
+5°
21 January
Sunday
+9°
+6°
22 January
Monday
+7°
+3°
23 January
Tuesday
+7°
+3°
24 January
Wednesday
+8°
+4°
25 January
Thursday
+9°
+3°
26 January
Friday
+9°
+6°
27 January
Saturday
+8°
+4°
28 January
Sunday
+10°
+4°
29 January
Monday
+10°
+4°
30 January
Tuesday
+10°
+6°
31 January
Wednesday
+11°
+4°
January in Alpharetta is the coldest month of the year. In January, the weather in Alpharetta is typically cold. Average daily high temperature in January is about 9 degrees above zero. On average, Alpharetta has 14 sunny, 8 rainy, 8 partly cloudy, and 1 cloudy day in January. The rains are usually moderate. January as well as February, March, July, and December is considered the most uncomfortable time to visit Alpharetta.