Weather forecast for 10 daysSiena, Italy

Weather forecast for the weekend

Saturday 17. Oct 2026

  • 23°C
  • 11°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0mm
  • Wind: 6km/hS 178°
  • Humidity: 49%
  • UV index: 3
  • Sunrise: 07:30 CEST
  • Sunset: 18:29 CEST
  • ▼
Today, on Saturday, 17th of October, a partly cloudy sky is anticipated.
The highest forecasted temperature is a warm 23°C, while the lowest temperature will be a crisp 11°C.
Today, expect conditions that are warmer than normal, with a temperature that reflects September's typical maximum of 24.5°C.
Sunrise was at 07:30 and sunset will be at 18:29; the daylight will last for 10h and 58min.

Sunday 18. Oct 2026

  • 22°C
  • 10°C
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 22%
  • Precipitation: 0mm
  • Wind: 12km/hSE 126°
  • Humidity: 77%
  • UV index: 2
  • Sunrise: 07:32 CEST
  • Sunset: 18:27 CEST
  • ▼
On Sunday, in Siena, patchy light may appear briefly, but the overall trend is cloudy.
The expected temperature range extends from a high of a pleasant 22°C to a low of a crisp 10°C.
Tomorrow, the maximum temperature is anticipated to be a couple of degrees higher than the common October peak of 19.5°C.
Sunrise will be at 07:32 and sunset at 18:27; tomorrow's daylight will last for 10h and 55min.

10-day overview

Daily temperatures

Warmest day: Monday 24°C.
Coldest period: Wednesday - Thursday 18°C.

Chance of precipitation

Highest chance: Wednesday 94%.

Long-term weather forecast

  • Saturday
  • 17. Oct 2026
  • 23°C
  • 11°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0mm
  • Wind: 6km/hS 178°
  • Humidity: 49%
  • UV index: 3
  • Sunrise: 07:30 CEST
  • Sunset: 18:29 CEST
  • ▼
  • Sunday
  • 18. Oct 2026
  • 22°C
  • 10°C
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 22%
  • Precipitation: 0mm
  • Wind: 12km/hSE 126°
  • Humidity: 77%
  • UV index: 2
  • Sunrise: 07:32 CEST
  • Sunset: 18:27 CEST
  • ▼
  • Monday
  • 19. Oct 2026
  • 24°C
  • 9°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0mm
  • Wind: 7km/hSE 127°
  • Humidity: 64%
  • UV index: 4
  • Sunrise: 07:33 CEST
  • Sunset: 18:25 CEST
  • ▼
  • Tuesday
  • 20. Oct 2026
  • 22°C
  • 14°C
PM Showers
PM Showers
  • Precip. probability: 59%
  • Precipitation: 19mm
  • Wind: 15km/hSE 129°
  • Humidity: 73%
  • UV index: 3
  • Sunrise: 07:34 CEST
  • Sunset: 18:24 CEST
  • ▼
  • Wednesday
  • 21. Oct 2026
  • 18°C
  • 11°C
Thunderstorms
Thunderstorms
  • Precip. probability: 94%
  • Precipitation: 14mm
  • Wind: 15km/hSSW 193°
  • Humidity: 89%
  • UV index: 2
  • Sunrise: 07:35 CEST
  • Sunset: 18:22 CEST
  • ▼
  • Thursday
  • 22. Oct 2026
  • 18°C
  • 7°C
PM Showers
PM Showers
  • Precip. probability: 45%
  • Precipitation: 2mm
  • Wind: 17km/hWSW 253°
  • Humidity: 78%
  • UV index: 3
  • Sunrise: 07:37 CEST
  • Sunset: 18:21 CEST
  • ▼
  • Friday
  • 23. Oct 2026
  • 19°C
  • 7°C
AM Fog / PM Sun
AM Fog / PM Sun
  • Precip. probability: 10%
  • Precipitation: 0mm
  • Wind: 10km/hNE 36°
  • Humidity: 74%
  • UV index: 3
  • Sunrise: 07:38 CEST
  • Sunset: 18:19 CEST
  • ▼
  • Saturday
  • 24. Oct 2026
  • 19°C
  • 7°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 12%
  • Precipitation: 0mm
  • Wind: 10km/hSSE 165°
  • Humidity: 71%
  • UV index: 3
  • Sunrise: 07:39 CEST
  • Sunset: 18:18 CEST
  • ▼
  • Sunday
  • 25. Oct 2026
  • 19°C
  • 7°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0mm
  • Wind: 11km/hSSE 154°
  • Humidity: 69%
  • UV index: 3
  • Sunrise: 06:40 CET
  • Sunset: 17:16 CET
  • ▼
  • Monday
  • 26. Oct 2026
  • 20°C
  • 7°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 13%
  • Precipitation: 0mm
  • Wind: 12km/hSSE 158°
  • Humidity: 69%
  • UV index: 3
  • Sunrise: 06:42 CET
  • Sunset: 17:15 CET
  • ▼
The next ten days will bring unstable conditions, and a mix of cloud-filled, rain-soaked, storm-filled and hazy weather is predicted.
Rainfall is anticipated on Tuesday through Thursday.
In the coming days, the highest temperature will range between 18°C and 24°C, while the nightly low temperatures will show a considerable swing, as the minimum temperature is expected to range between 7°C and 14°C.
Monday will be the warmest day, with a maximum temperature of 24°C; the coldest days will be Wednesday and Thursday, with a maximum of 18°C.
Updated: Oct 17, 2026 @ 12:48:57 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, clouds will dominate overhead, keeping the atmosphere dull.

Tomorrow, the highest temperature will be 22°C, while the lowest temperature will be 10°C.
The maximum temperature will be a few degrees higher than the average highest temperature of 19.5°C in October. The lowest temperature tomorrow will be in line with the average low temperature.

On Sunday, in Siena, sunrise will be at 07:32 and sunset at 18:27 (CEST).

Tomorrow, the daylight will last for 10h and 55min.