The following data has been collected by the Meteorological Observatory of Rome at the Collegio Romano (the Torre Calandrelli) within 35 years of observations (1960-1995 ca)
Average Hours of Sunshine per Day in relation with the hours of rain or clouded sky | Month | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | | Hours | 4 | 4.5 | 5.2 | 6.2 | 8.2 | 9.3 | 10.7 | 10.3 | 7.7 | 5.9 | 4.2 | 3.4 |
Precipitation aspected in the month | Month | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | | mill | 71.0 | 62.6 | 57.8 | 45.5 | 45.4 | 30.2 | 17.1 | 30.4 | 72.7 | 82.8 | 106.0 | 81.2 | | inches | 2.79 | 2.46 | 2.24 | 1.79 | 1.78 | 1.18 | 0.67 | 1.19 | 2.86 | 3.25 | 4.17 | 3.19 |
Average Maximum Temperature | Month | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | | C° | 11.1 | 12.1 | 7.2 | 18.1 | 22.8 | 26.8 | 30.0 | 29.4 | 25.6 | 20.8 | 15.7 | 12.3 | | F° | 51.98 | 53.78 | 58.82 | 64.58 | 73.04 | 80.24 | 86.0 | 84.92 | 78.08 | 69.44 | 60.26 | 54.14 |
Average Minimum Temperature | Month | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | | C° | 4.09 | 5.6 | 7.2 | 9.6 | 13.2 | 17.2 | 19.5 | 19.5 | 16.8 | 12.3 | 8.8 | 5.9 | | F° | 40.82 | 42.08 | 44.96 | 49.28 | 55.76 | 62.96 | 67.1 | 67.1 | 62.24 | 54.14 | 47.87 | 42.62 |
Average Temperature (Max+min)/2 | Month | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | | C° | 8 | 9 | 11 | 13.8 | 17.7 | 21.9 | 24.7 | 24.4 | 21.0 | 16.4 | 12.5 | 9 | | F° | 46.4 | 48.2 | 51.8 | 56.84 | 63.86 | 71.42 | 76.46 | 75.92 | 69.8 | 61.52 | 54.5 | 48.2 |
Relative Humidity in % | Month | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | | % | 67 | 65 | 62 | 60 | 55 | 54 | 49 | 52 | 59 | 64 | 68 | 68 |
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