Weather in Viterbo in September 2026
Mon
Tue
Wed
Thu
Fri
Sat
Sun
1 +31° +21°
39% · 5.5 West
763 mmHg
2 +31° +21°
34% · 5.5 West
764 mmHg
3 +31° +20°
38% · 4.5 North-North-East
763 mmHg
4 +33° +21°
33% · 5.5 West-South-West
764 mmHg
5 +32° +21°
24% · 5.5 West-South-West
764 mmHg
6 +32° +21°
46% · 5.5 West-South-West
766 mmHg
7 +32° +22°
24% · 5.5 West-South-West
765 mmHg
8 +32° +21°
38% · 5.5 West
763 mmHg
9 +30° +21°
35% · 5.5 South-West
758 mmHg
10 +23° +21°
75% · 6.5 South
760 mmHg
11 +26° +19°
51% · 4.5 West
762 mmHg
12 +28° +15°
39% · 3.5 West
764 mmHg
13 +26° +16°
38% · 3.5 North-North-East
766 mmHg
14 +27° +17°
42% · 2.5 West
765 mmHg
15 +25° +19°
44% · 3.5 North
764 mmHg
16 +28° +19°
36% · 4.5 West-South-West
762 mmHg
17 +27° +19°
53% · 5.5 South-West
761 mmHg
18 +25° +18°
60% · 5.5 South-South-West
761 mmHg
19 +26° +16°
48% · 3.5 South-South-West
765 mmHg
20 +27° +16°
49% · 3.5 West-South-West
768 mmHg
21 +27° +17°
48% · 2.5 North-North-East
765 mmHg
22 +25° +18°
39% · 6.5 North-North-East
764 mmHg
23 +22° +12°
21% · 6.5 North-North-East
767 mmHg
24 +24° +16°
54% · 4.5 West-South-West
767 mmHg
25 +26° +16°
39% · 4.5 North-North-East
762 mmHg
26 +24° +13°
41% · 7.5 North-North-East
766 mmHg
27 +22° +13°
50% · 4.5 North-North-East
767 mmHg
28 +25° +14°
42% · 4.5 West-South-West
766 mmHg
29 +25° +14°
46% · 4.5 West-South-West
767 mmHg
30 +25° +15°
45% · 4.5 West-South-West
769 mmHg
Temperature change in Viterbo, Italy in September 2026
Detailed daily forecast for Viterbo in September 2026
Early September
- 1 September Clear sky+31°+21°
- 2 September Scattered clouds+31°+21°
- 3 September Clear sky+31°+20°
- 4 September Scattered clouds+33°+21°
- 5 September Clear sky+32°+21°
- 6 September Clear sky+32°+21°
- 7 September Clear sky+32°+22°
- 8 September Light rain+32°+21°
- 9 September Scattered clouds+30°+21°
- 10 September Light rain+23°+21°
Mid-September 2026
- 11 September Light rain+26°+19°
- 12 September Clear sky+28°+15°
- 13 September Few clouds+26°+16°
- 14 September Overcast+27°+17°
- 15 September Clear sky+25°+19°
- 16 September Few clouds+28°+19°
- 17 September Light rain+27°+19°
- 18 September Light rain+25°+18°
- 19 September Light rain+26°+16°
- 20 September Scattered clouds+27°+16°
Late September in Viterbo
- 21 September Few clouds+27°+17°
- 22 September Scattered clouds+25°+18°
- 23 September Clear sky+22°+12°
- 24 September Light rain+24°+16°
- 25 September Light rain+26°+16°
- 26 September Clear sky+24°+13°
- 27 September Few clouds+22°+13°
- 28 September Clear sky+25°+14°
- 29 September Clear sky+25°+14°
- 30 September Clear sky+25°+15°
Temperature in Viterbo in September 2026
What is the highest temperature in Viterbo in September 2026?
The highest temperature in Viterbo in September 2026 is +35°C, recorded on 4 September.
What is the lowest temperature in Viterbo in September 2026?
The lowest temperature in Viterbo in September 2026 is +12°C, recorded on 23 September.
What is the average temperature in Viterbo in September 2026?
The average temperature in Viterbo in September 2026 is +27°C during the day and +18°C at night.
Climate normals by month
average daytime and night-time temperature, Viterbo
Daytime Night-time
Wind rose for Viterbo: September
based on the month history over the last 10 years
Prevailing West-South-West — 17% of periods
Precipitation in Viterbo: September by year
days with precipitation
September in Viterbo over the last 10 years
average daytime temperature by year