Residents are being urged to take extra care this Easter Monday because of a disruptive weather system.
The area of low pressure, which has been named as Storm Katie by the Met Office, brought strong winds and heavy, persistent rain overnight.
Derbyshire drivers are being warned to expect road disruption as a result of surface water flooding.
A Derbyshire fire service spokesman said: "There is lots of standing water on roads throughout the county. Don't drive into floodwater or through road closures. Take extra care."
The Cat and Fiddle had to be closed between the Charity Lane junction in Macclesfield and the A54 junction in Buxton because of snow.
The rain flooded the railway near Clay Cross tunnel between Derby and Chesterfield, disrupting East Midlands trains on the London St Pancras/Nottingham/Sheffield route.
There was also flooding on the railway at Cromford, disrupting trains on the Newark/Nottingham/Derby route.
The lines are now open.
Meanwhile, the Environment Agency has issued flood alerts for four rivers in Derbyshire.
They are Bottle Brook, from Denby to the River Derwent and Little Eaton, the River Amber, the River Ecclesbourne, through Duffield, and the River Erewash and its tributaries from Kirkby-in-Ashfield to the River Trent at Attenborough. The latter goes between Langley Mill and Eastwood, skirting the east of Ilkeston.
A severe weather warning is in force in Derbyshire until noon when conditions are expected to turn drier and brighter with some sunny spells.
Residents in parts of the Peak District - like Buxton - woke up to some snow this Bank Holiday.
And on Easter Sunday, large hailstones fell on Chesterfield and surrounding areas - making the location look like a winter wonderland even though it's spring.