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