Weather in Siena: December
 |
Average day temperature: | 49.5°F |
| Average night temperature: | 40.6°F | |
 |
Number of sunny days: | 13 days |
| Day length: | 9.0 - 9.2 hours | |
 |
Number of rainy days: | 3 days |
| Precipitation totals: | 1.7 in. | |
| more information | ||
14 days
forecast
forecast
| Siena |
weather in
January
January
| Siena |
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
9
18
27
36
45
54
63
72
| Day temperature | Night temperature |
The highest day temperature during December of 2024 was 54°F. At the same time the lowest night temperature was 32°F. Daily and nightly averages during December were 48.4°F and 39.0°F.
Sunny, partly cloudy and cloudy days
| Sunny days | |
| Partly cloudy days | |
| Cloudy days |
35%
23%
42%
Mostly all days in December are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in December, in.
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
0.4
0.9
1.3
1.7
2.2
2.6
3.0
2.5
1.7
2.0
1.0
1.5
2.4
1.5
1.6
1.7
1.3
1.9
2.5
1.7
2.0
1.0
1.5
2.4
1.5
1.6
1.7
1.3
Precipitation total value in Siena in December is 1.9 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
1.1
2.2
3.3
4.4
5.5
6.6
7.6
5.4
4.7
5.1
5.4
5.6
5.1
5.6
5.9
6.4
5.7
5.6
4.6
5.4
4.7
5.1
5.4
5.6
5.1
5.6
5.9
6.4
5.7
5.6
The average wind speed value in December is 4.6 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
2.2
4.4
6.6
8.8
11.0
13.3
15.5
5.1
6.9
8.9
11.3
12.9
11.8
9.1
8.3
6.9
5.7
4.9
4.7
5.1
6.9
8.9
11.3
12.9
11.8
9.1
8.3
6.9
5.7
4.9
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: 4.7.
Best time for vacation in Siena
Siena on a weather map
Leaflet | Tiles © Esri
Places in Italy:
Name
°F
24 Hours Forecast
Siena
Local time: 16:02
April 10, thursday
1800
59°F
E
5 mph
5 mph
2100
48°F
SE
4 mph
4 mph
April 11, friday
0000
46°F
SE
2 mph
2 mph
0300
45°F
SW
1 mph
1 mph
0600
45°F
N
1 mph
1 mph
0900
57°F
NE
2 mph
2 mph
1200
64°F
E
7 mph
7 mph
1500
64°F
E
12 mph
12 mph
