A number of social media users shared pictures and video of the perplexing precipitation, with both humans and dogs caught unawares.
L, 27, from Glasgow – who did not want her name published – said it lasted for around five minutes.
“My mum and I were enjoying the sun, and then the hail-snow descended, and disappeared as quickly as it arrived,” L tweeted.
They told the PA news agency: “The texture of the snow was strange, very soft but took a while to melt.
“Max is a puppy so I think he was slightly more confused than I was, but given how quickly it started and ended I was definitely close behind him!
“It wasn’t hail or snow, it was somewhere between the two.”
Meanwhile Geoff Barton, 60, professor of bioinformatics and head of computational biology at the University of Dundee, was similarly shocked.
“We’ve had fabulous sunshine, then snow, then sunshine again. And now? Both together!” he tweeted.
“Until about 12:20 the weather was bright sunshine with blue skies,” he told PA.
“Then we had a snow flurry and then more sunshine until we had this mix of snow and sun at around 15:10.”
Mr Barton said “it is pretty unusual here to get snow and sun, but of course rain and sun is much more common in the UK.
“Dundee rarely gets snow and the climate is similar to Cambridge, if a degree or so colder on average.”