The Met Office has issued a severe weather warning for snow in Gloucestershire tomorrow morning.
Forecasters say Friday morning's rush hour could be worst affected.
A warning on the Met Office website says the bad weather could hit between 2am tomorrow morning until 3pm.
It says: "Rain will turn to snow for a time, mainly over the high ground during Friday morning.
"Over low ground it is unlikely that any snow will accumulate but some areas may see falling snow and slushy deposits for a time.
"The public are advised to be aware of the potential for some disruption to travel especially during the Friday morning rush hour."