Common information

Country
Italy
Population
42 867

Weather, climate, temperature by months in Siena

Season Autumn Winter Spring Summer
Month Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Year
Record high, °C 36 30 22 18 17 21 24 30 32 37 40 40 40
Average high, °C 24 18 13 9 8 9 12 16 21 24 28 28 18
Average temperature, °C 19 14 10 6 5 6 8 11 16 19 22 22 13
Average low, °C 15 12 7 4 3 3 5 7 11 15 18 18 10
Record low, °C 5 0 -5 -7 -7 -7 -11 -2 2 6 7 10 -11
Rain, days 7 8 8 8 6 6 6 7 7 6 4 5 78
Fog, days 8 10 12 13 12 10 9 8 7 6 7 7 109
Thunderstorms, days 5 6 3 2 1 1 2 4 3 3 3 5 38
Average precipitation, mm. 70 76 97 77 66 62 62 72 57 42 30 39 750
Relative humidity, % 75 80 81 80 78 77 74 75 75 73 69 72 76
Relative humidity morning, % 90 88 87 85 86 84 85 87 89 88 89 89 87
Relative humidity evening, % 57 61 64 66 63 57 58 59 59 56 53 53 59
Wind speed, km/h 9 12 12 9 12 12 12 12 12 12 12 12 12
Day Length, часов 13 12 10 10 10 11 13 14 15 16 16 14 13
Dew point, °C 14 11 6 3 1 2 4 8 12 15 16 16 108
Growing degree-day, °C 267 121 0 0 0 0 0 17 172 267 362 362 1566
Solar radiation, global, Mj/m2 15 10 6 5 6 9 13 16 20 23 24 21 14

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