Weather in San Bernardino: December
 |
Average day temperature: | 61.8°F |
| Average night temperature: | 46.4°F | |
 |
Number of sunny days: | 19 days |
| Day length: | 9.9 - 10.0 hours | |
 |
Number of rainy days: | 1 day |
| Precipitation totals: | 0.9 in. | |
| more information | ||
14 days
forecast
forecast
| San Bernardino |
weather in
January
January
| San Bernardino |
Air temperature in December, °F
Show year:
2024
2023
2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
0
13
26
39
52
65
78
91
104
| Day temperature | Night temperature |
The highest day temperature during December of 2024 was 77°F. At the same time the lowest night temperature was 43°F. Daily and nightly averages during December were 68.0°F and 51.0°F.
Sunny, partly cloudy and cloudy days
| Sunny days | |
| Partly cloudy days | |
| Cloudy days |
59%
22%
19%
Mostly all days in December are sunny but cloudy days are also possible.
Precipitation total in December, in.
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
0.2
0.3
0.5
0.7
0.9
1.0
1.2
1.4
Precipitation total value in San Bernardino in December is 0.9 in. Other months of the year show relatively similar values.
Wind speed in December, mph
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
0.8
1.6
2.4
3.3
4.1
4.9
5.7
3.9
3.7
3.9
4.2
4.3
4.6
4.8
4.6
4.7
4.3
4.2
3.5
3.9
3.7
3.9
4.2
4.3
4.6
4.8
4.6
4.7
4.3
4.2
The average wind speed value in December is 3.5 mph It makes December lest windy month of the year.
Average sunny hours
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
2.3
4.6
6.9
9.2
11.5
13.7
16.0
18.3
8.4
9.8
11.3
12.3
13.2
13.4
12.2
10.8
7.6
7.6
7.4
6.7
8.4
9.8
11.3
12.3
13.2
13.4
12.2
10.8
7.6
7.6
7.4
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in December is: 6.7.
Best time for vacation in San Bernardino
San Bernardino on a weather map
Leaflet | Tiles © Esri
Places in USA:
Name
°F
24 Hours Forecast
San Bernardino
Local time: 06:16
April 17, thursday
0900
48°F
N
3 mph
3 mph
1200
50°F
NE
6 mph
6 mph
1500
52°F
NE
10 mph
10 mph
1800
50°F
NE
12 mph
12 mph
2100
50°F
NE
6 mph
6 mph
April 18, friday
0000
48°F
NE
4 mph
4 mph
0300
48°F
N
4 mph
4 mph
0600
48°F
N
4 mph
4 mph
