Planning for the weather is an important factor for making your trip to Frenstat pod Radhostem a success, especially when you're splurging. The hottest months are usually August and July with an average temp of 64°F, while the coldest months are January and February with an average of 33°F. The snowiest months in Frenstat pod Radhostem are December, January, November, and February, with each month seeing an average of 10 inches of snowfall.