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Climate chart Siena

Jan.

max 50°F min 39°F

9

Feb.

max 54°F min 37°F

4

Mar.

max 57°F min 36°F

3

Apr.

max 63°F min 43°F

10

May.

max 81°F min 52°F

11

Jun.

max 95°F min 61°F

1

Jul.

max 102°F min 64°F

1

Aug.

max 95°F min 64°F

14

Sep.

max 79°F min 57°F

16

Oct.

max 75°F min 55°F

4

Nov.

max 59°F min 46°F

10

Dec.

max 48°F min 39°F

20

Weekly overview Siena

Weather Siena 14 days

Wednesday 04-02-2026 Moderate rain 46°F / 48°F

Thursday 05-02-2026 Patchy rain possible 43°F / 52°F

Friday 06-02-2026 Moderate rain 43°F / 46°F

Saturday 07-02-2026 Moderate rain 43°F / 54°F

Sunday 08-02-2026 Moderate rain 43°F / 46°F

Monday 09-02-2026 Patchy rain possible 37°F / 52°F

Tuesday 10-02-2026 Partly cloudy 41°F / 52°F

Wednesday 11-02-2026 Patchy rain possible 37°F / 45°F

Thursday 12-02-2026 Patchy rain possible 39°F / 50°F

Friday 13-02-2026 Sunny/Clear 37°F / 55°F

Saturday 14-02-2026 Sunny/Clear 39°F / 55°F

Sunday 15-02-2026 Patchy rain possible 41°F / 57°F

Monday 16-02-2026 Sunny/Clear 37°F / 57°F

Tuesday 17-02-2026 Partly cloudy 39°F / 55°F

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