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