The First Great Western service between Par and Newquay is suspended due to emergency works between Luxulyan and Newquay.
Replacement buses have been requested but are not in place yet.
More top news
Early wet spells will clear by midnight to leave clear skies overnight.
Any showers will ease this evening, with sunshine giving way to clear skies overnight.
As the NHS approaches its 70th birthday ITV West Country is celebrating the health service and the people who work in it.