Historical weather statistics for Siena, Italy
Typical weather in Siena
July is typically the warmest month, with median daily highs near 30.7 °C and lows near 18.6 °C. January is typically the coolest month, with median daily highs near 9.7 °C and lows near 1.1 °C. Median precipitation probability is highest in November, at about 39.8 %. Median relative humidity reaches its annual high in December, at about 97.0 %. These are historical climate statistics, not a day-to-day forecast.
Monthly values are medians of historical daily weather statistics. They describe typical conditions and are not a forecast.
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| Month | Daily max temperature (°C) | Daily min temperature (°C) | Wind chance (%) | Humidity (%) | Precipitation chance (%) | Snow depth (cm) |
|---|---|---|---|---|---|---|
| January | 9.7 °C | 1.1 °C | 0.0 % | 96.5 % | 29.7 % | 0.0 cm |
| February | 11.1 °C | 1.3 °C | 0.0 % | 95.0 % | 34.0 % | 0.0 cm |
| March | 14.0 °C | 3.4 °C | 0.0 % | 93.3 % | 29.3 % | 0.0 cm |
| April | 17.6 °C | 7.1 °C | 0.0 % | 92.7 % | 35.5 % | 0.0 cm |
| May | 21.5 °C | 10.7 °C | 0.0 % | 92.1 % | 30.7 % | 0.0 cm |
| June | 26.4 °C | 15.3 °C | 0.0 % | 91.0 % | 15.2 % | 0.0 cm |
| July | 30.7 °C | 18.6 °C | 0.0 % | 87.2 % | 15.3 % | 0.0 cm |
| August | 30.1 °C | 18.5 °C | 0.0 % | 88.3 % | 20.0 % | 0.0 cm |
| September | 25.4 °C | 15.1 °C | 0.0 % | 91.1 % | 28.2 % | 0.0 cm |
| October | 19.9 °C | 10.8 °C | 0.0 % | 94.5 % | 28.3 % | 0.0 cm |
| November | 14.5 °C | 6.9 °C | 0.0 % | 96.6 % | 39.8 % | 0.0 cm |
| December | 10.6 °C | 2.0 °C | 0.0 % | 97.0 % | 29.7 % | 0.0 cm |