<Tr> <Td> Denver </Td> <Td> Colorado </Td> <Td> 50 </Td> </Tr> <Tr> <Td> Des Moines </Td> <Td> Iowa </Td> <Td> 50 </Td> </Tr> <Tr> <Td> Detroit </Td> <Td> Michigan </Td> <Td> 50 </Td> </Tr> <Tr> <Td> Duluth </Td> <Td> Minnesota </Td> <Td> 97 </Td> </Tr>

When is the last time it snowed on christmas in st louis