Rome
Italy
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 31 | 28 | 22 | 18 | 20 | 23 | 25 | 30 | 30 | 32 | 36 | 33 | 36 |
| Average high, °C | 19 | 14 | 8 | 6 | 4 | 5 | 9 | 13 | 17 | 21 | 24 | 23 | 14 |
| Average temperature, °C | 16 | 11 | 6 | 3 | 1 | 3 | 5 | 9 | 13 | 17 | 20 | 19 | 10 |
| Average low, °C | 13 | 8 | 3 | 0 | 0 | 0 | 2 | 5 | 10 | 13 | 16 | 15 | 7 |
| Record low, °C | 2 | -2 | -7 | -8 | -12 | -12 | -6 | -2 | 1 | 6 | 6 | 7 | -12 |
| Fog, days | 28 | 29 | 27 | 28 | 28 | 26 | 27 | 24 | 27 | 25 | 27 | 26 | 322 |
| Thunderstorms, days | 4 | 1 | 0 | 0 | 0 | 0 | 1 | 3 | 9 | 10 | 9 | 10 | 47 |
| Average precipitation, mm. | 82 | 76 | 70 | 37 | 32 | 44 | 61 | 80 | 106 | 97 | 48 | 77 | 810 |
| Relative humidity, % | 75 | 79 | 80 | 80 | 75 | 75 | 67 | 72 | 75 | 74 | 72 | 73 | 75 |
| Relative humidity morning, % | 91 | 92 | 91 | 89 | 88 | 88 | 84 | 87 | 90 | 86 | 86 | 88 | 88 |
| Relative humidity evening, % | 60 | 65 | 67 | 68 | 66 | 62 | 54 | 56 | 61 | 57 | 55 | 57 | 61 |
| Wind speed, km/h | 6 | 8 | 12 | 9 | 16 | 14 | 6 | 6 | 6 | 6 | 4 | 6 | 8 |
| Monthly sunshine, часов | 175 | 118 | 65 | 48 | 63 | 80 | 137 | 178 | 212 | 227 | 229 | 222 | 1753 |
| Day Length, часов | 13 | 11 | 10 | 9 | 10 | 11 | 13 | 14 | 16 | 16 | 16 | 15 | 13 |
| Dew point, °C | 13 | 8 | 2 | -1 | -2 | 0 | 2 | 5 | 11 | 14 | 16 | 16 | 84 |
| Growing degree-day, °C | 175 | 26 | 0 | 0 | 0 | 0 | 0 | 0 | 103 | 200 | 301 | 276 | 1081 |
| Atmosphere pressure, bar | 757 | 754 | 750 | 748 | 748 | 746 | 747 | 747 | 751 | 755 | 758 | 757 | 9018 |
| Solar radiation, global, Mj/m2 | 14 | 9 | 6 | 5 | 6 | 9 | 14 | 16 | 19 | 22 | 22 | 19 | 13 |