Weather
Vatican City is the world's smallest country so the weather has no variation, although it does shift with the seasons and obviously follow the same weather patterns as that of Rome, which is often described as a Mediterranean climate.
Summers can be extraordinarily hot as heat waves from North Africa can make the city nearly unbearable as daily highs averaging 90˚ F (22˚ C) are common. It tends to be fairly dry during the summers with little humidity, although this can change week to week.
Winters are fairly mild, as the city can receive snow, but it never tends to stay on the ground. During this season, temperatures can fall to about 40˚ F (5˚ C) at night, but reach about 55˚ F (14˚ C) during days. It is also during the winter months that Vatican City receives most of its rains and there can be a great amount of mist early mornings.
The late spring and early fall (autumn) are a bit cooler and temperatures can fall dramatically as these seasons near winter. From year to year when the temperatures change from the hot and dry summers to the cooler and wet winters can be unpredictable. Despite the unpredictability from week to week, Vatican City averages daily highs of about 72˚ F (22˚ C) during these seasons.