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.