<Tr> <Th> Average snowfall inches (cm) </Th> <Td> 19.4 (49.3) </Td> <Td> 12.4 (31.5) </Td> <Td> 13.2 (33.5) </Td> <Td> 6.9 (17.5) </Td> <Td> 0.4 (1) </Td> <Td> 0 (0) </Td> <Td> 0 (0) </Td> <Td> 0 (0) </Td> <Td> 0.1 (0.3) </Td> <Td> 2.3 (5.8) </Td> <Td> 13.7 (34.8) </Td> <Td> 17.7 (45) </Td> <Td> 86.1 (218.7) </Td> </Tr> <Tr> <Th> Average precipitation days (≥ 0.01 in) </Th> <Td> 10.3 </Td> <Td> 8.5 </Td> <Td> 9.7 </Td> <Td> 10.6 </Td> <Td> 12.3 </Td> <Td> 12.6 </Td> <Td> 11.8 </Td> <Td> 10.8 </Td> <Td> 12.3 </Td> <Td> 11.3 </Td> <Td> 10.7 </Td> <Td> 10.5 </Td> <Td> 131.4 </Td> </Tr> <Tr> <Th> Average snowy days (≥ 0.1 in) </Th> <Td> 12.9 </Td> <Td> 10.1 </Td> <Td> 8.7 </Td> <Td> 4.6 </Td> <Td> 0.5 </Td> <Td> 0 </Td> <Td> 0 </Td> <Td> 0 </Td> <Td> 0.1 </Td> <Td> 2.0 </Td> <Td> 8.9 </Td> <Td> 12.8 </Td> <Td> 60.6 </Td> </Tr> <Tr> <Th> Average relative humidity (%) </Th> <Td> 72.0 </Td> <Td> 69.8 </Td> <Td> 69.3 </Td> <Td> 63.6 </Td> <Td> 62.7 </Td> <Td> 69.5 </Td> <Td> 70.9 </Td> <Td> 74.5 </Td> <Td> 75.7 </Td> <Td> 71.4 </Td> <Td> 74.9 </Td> <Td> 76.3 </Td> <Td> 70.9 </Td> </Tr>

Blizzards are most common in the north central plains of the us (i.e. north dakota)