Weather in Siena in January 2026
Mon
Tue
Wed
Thu
Fri
Sat
Sun
1 +3° -1°
92% · 2.5 South
765 mmHg
2 +10° -3°
73% · 5.5 South-West
755 mmHg
3 +9° 0°
81% · 3.5 West
753 mmHg
4 +4° -1°
94% · 2.5 North-East
755 mmHg
5 +5° +4°
86% · 2.5 East-North-East
755 mmHg
6 +1° -1°
99% · 2.5 North
754 mmHg
7 +1° -2°
67% · 3.5 North
758 mmHg
8 +3° -2°
72% · 2.5 South-East
762 mmHg
9 +10° +2°
83% · 10.5 West
756 mmHg
10 +5°
77% · 7.5 West
751 mmHg
11 +5°
50% · 1.5 East
764 mmHg
12 +5° 0°
67% · 2.5 South-South-East
769 mmHg
13 +7° 0°
85% · 3.5 South
768 mmHg
14 +9° +7°
81% · 2.5 South-South-East
768 mmHg
15 +9° +7°
92% · 2.5 East-South-East
767 mmHg
16 +12° +6°
72% · 1.5 East
765 mmHg
17 +10° +4°
73% · 3.5 East
765 mmHg
18 +11° +4°
70% · 4.5 East
764 mmHg
19 +9°
74% · 6.5 East-North-East
765 mmHg
20 +7° +4°
64% · 7.5 East
764 mmHg
21 +7°
57% · 3.5 East
764 mmHg
22 +7° -1°
56% · 2.5 East-North-East
765 mmHg
23 +8°
81% · 2.5 South-South-East
752 mmHg
24 +9° +6°
92% · 6.5 South
752 mmHg
25 +7° +5°
92% · 5.5 South
750 mmHg
26 +7° +3°
83% · 3.5 North-North-West
751 mmHg
27 +9°
71% · 4.5 South
757 mmHg
28 +9° +6°
91% · 7.5 West
743 mmHg
29 +8° +4°
78% · 1.5 East
747 mmHg
30 +8° +2°
82% · 1.5 East
752 mmHg
31 +9° +3°
78% · 3.5 North-East
751 mmHg
Temperature change in Siena, Italy in January 2026
Detailed daily forecast for Siena in January 2026
Early January
- 1 January Overcast+3°-1°
- 2 January Overcast+10°-3°
- 3 January Scattered clouds+9°0°
- 4 January Light rain+4°-1°
- 5 January Rain+5°+4°
- 6 January Light rain+1°-1°
- 7 January Light rain+1°-2°
- 8 January Overcast+3°-2°
- 9 January Rain+10°+2°
- 10 January Light rain+5°—
Mid-January 2026
- 11 January Clear sky+5°—
- 12 January Scattered clouds+5°0°
- 13 January Few clouds+7°0°
- 14 January Scattered clouds+9°+7°
- 15 January Scattered clouds+9°+7°
- 16 January Overcast+12°+6°
- 17 January Few clouds+10°+4°
- 18 January Few clouds+11°+4°
- 19 January Overcast+9°—
- 20 January Scattered clouds+7°+4°
Late January in Siena
- 21 January Overcast+7°—
- 22 January Clear sky+7°-1°
- 23 January Light rain+8°—
- 24 January Overcast+9°+6°
- 25 January Overcast+7°+5°
- 26 January Rain+7°+3°
- 27 January Light rain+9°—
- 28 January Light rain+9°+6°
- 29 January Light rain+8°+4°
- 30 January Rain+8°+2°
- 31 January Light rain+9°+3°
Temperature in Siena in January 2026
What is the highest temperature in Siena in January 2026?
The highest temperature in Siena in January 2026 is +14°C, recorded on 16 January.
What is the lowest temperature in Siena in January 2026?
The lowest temperature in Siena in January 2026 is -3°C, recorded on 2 January.
What is the average temperature in Siena in January 2026?
The average temperature in Siena in January 2026 is +7°C during the day and +2°C at night.
Climate normals by month
average daytime and night-time temperature, Siena
Daytime Night-time
Wind rose for Siena: January
based on the month history over the last 10 years
Prevailing East — 20% of periods
Precipitation in Siena: January by year
days with precipitation
January in Siena over the last 10 years
average daytime temperature by year