The summit of kunanyi/Mount Wellington has been closed after snow fell overnight.
The Bureau of Meteorology (BOM) had earlier predicted snow down to 600 metres above sea level.
The City of Hobart has shut the road at Bracken Lane and told bus services to avoid the park entrance due to a lack of turn-around space.
Temperatures on the summit reached a low of -0.3 degrees at 6:27am on Wednesday, with current conditions sitting at -1.5 degrees and a feels like temp of -14.6 degrees.
A wind gust of 143km/h was also recorded at 8:48am.
“For every 100 metres you ascend the temperature typically falls a degree,” the City of Hobart website says.
“From The Springs to the summit the altitude increases by 600 metres. The temperature at the top is likely to be 6°C colder than The Springs – and if it’s windy, it will feel even colder.”
The website advises visitors to be prepared to turn back and warns that all tracks can be slippery when covered in snow and ice.