If you want the warmest weather, organize your trip for July. The temperatures are around 52ºF (11ºC) to 70ºF (21ºC) during this time. January sees the coolest temperatures between 28ºF (-2ºC) and 36ºF (2ºC). For smaller crowds and potentially cheaper hotels with parking in Hallschlag, visit in February when it's less busy.