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