This page presents a long range weather forecast for Siena in May as well as other months. You can quickly get a brief overview of the weather to expect in May on a daily basis.
The Siena extended forecast data provided is based on the average values of previous years.
Long range weather forecast
Select a month and click on a day for more information:
Wednesday
May 1
17° / 10°
Thursday
May 2
19° / 10°
Friday
May 3
17° / 8°
Saturday
May 4
17° / 6°
Sunday
May 5
19° / 7°
Monday
May 6
20° / 9°
Tuesday
May 7
16° / 10°
Wednesday
May 8
17° / 9°
Thursday
May 9
19° / 7°
Friday
May 10
21° / 7°
Saturday
May 11
22° / 7°
Sunday
May 12
23° / 10°
Monday
May 13
23° / 10°
Tuesday
May 14
23° / 10°
Wednesday
May 15
23° / 11°
Thursday
May 16
20° / 13°
Friday
May 17
22° / 11°
Saturday
May 18
22° / 11°
Sunday
May 19
21° / 11°
Monday
May 20
20° / 11°
Tuesday
May 21
23° / 10°
Wednesday
May 22
24° / 11°
Thursday
May 23
25° / 12°
Friday
May 24
25° / 13°
Saturday
May 25
25° / 12°
Sunday
May 26
24° / 12°
Monday
May 27
25° / 13°
Tuesday
May 28
25° / 12°
Wednesday
May 29
21° / 12°
Thursday
May 30
23° / 11°
Friday
May 31
24° / 11°
Siena 30 days weather forecast
Check out our estimated 30 days weather forecast for Siena, this data is based on the average weather in Siena in the last few years.
For a more accurate and detailed forecast, check out the 14 day weather for Siena next to the desired date.