Great Western Railway is expecting to run a reduced service as temperatures are predicted to soar.
Great Western Railway says it does not anticipate widespread disruption to services tomorrow and the operator is not pro-actively changing its timetables.
The company says snow is not as much as of a problem for railways as any other sort of bad weather.
GWR adds its biggest problem during periods of poor weather is usually drivers getting to work.
According to the operator, Network Rail is busy gritting tracks in advance of another snowy day.
GWR also says today's services are not being affected by the onset of snowy weather.
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A technical glitch has been blamed after first class train tickets between two towns 64 miles apart were reportedly being sold for £10,000.
From Monday, 12 September to Friday, 21 October, the Severn Tunnel will be closed to prepare for a brand new fleet of electric trains.
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Passengers are advised to check before they travel through National Rail Enquiries or GWR