colder period of the year, from October to March, when there is more fog in Zagreb. More clear skies on Medvednica than in the city are a good reason for pleasant winter excursions.
Precipitation
Relative air moisture is largest during the cold part of the year, and generally is larger on stations with higher altitude because of lower temperatures, but luxuriant vegetation. Number of days with relative moisture above 80% is greatest on Puntijarka (158 days annually), and it decreases with the decrease in elevation, for example on station Zagreb-Gri? it is 67 days annually. On all stations the most thunderstorm days are in the warm part of the year (from April to September), when they are often connected to showers. These thunderstorm days occur in June (Puntijarka 7).
Annual precipitation on Medvednica is about 50% higher in comparison to Zagreb ( Zagreb 844 mm, Sljeme 1238 mm, Kralji?in zdenac 1159 mm, Faculty goods 1142 mm). Average number of days with hoar is 40 ( Zagreb 4). Mean annual number of days with snowfall on the top of Medvednica, most usually in January and February, is 54 days.
The Number of days with strong wind is 91 ( Zagreb 26) and they are more frequent during the cold part of the year, and the number of days with storm wind is 21 ( Zagreb 2), also during the cold part of the year. Forests of Medvednica have been heavily stricken by a catastrophic ice break which devastated forests (mainly beech) in November 1980, and later, in February 1983 large devastations occurred as a result of strong wing (large damage on fir). Effects of such a strong wind can still be seen in the area of Adolfovac
