The high of 89 degrees broke the record set in 1978.
Snow started falling 20 minutes before this year's first outdoor Columbia Farmers' Market was scheduled to close.
The National Weather Service in St. Louis advised that Columbia could see up to 3 inches of snow, putting it in reach of an all-time record for annual snowfall.
This weekend's snowy forecast could make this July to June period the snowiest on record in Columbia.
Because Missouri's recent snowstorm was declared a disaster by President Barack Obama, the state can now seek federal aid for the costs the snowstorm imposed on the city.
Most homeowner policies don't cover flood damage and people must buy the coverage through the National Flood Insurance Program.
The 6 inches of snow helped the 2010-2011 season climb to second place on the all-time list for most snowfall from July to June.
Columbia's seasonal total reached 50.6 inches Monday morning. The record is 54.8 inches in 1977-1978.
Columbia and some surrounding areas received between 3 and 5.5 inches overnight.
The snow isn't expected to last long, as temperatures should reach 70 by Thursday.
MU weather expert Tony Lupo says Columbia residents can expect a spring with less severe weather than normal.
Two separate electrical problems caused power outages on different sides of Columbia early Sunday afternoon and in the early hours of Monday.
Strong winds and tornado conditions caused widespread damage as a fast-moving storm whipped through Missouri.
A snowfall hit Columbia on Thursday.
The National Weather Service says there will be no snow in Columbia next week, and temperatures will climb into the 50s.
The drill is meant to help Missourians prepare for severe weather events. Missourians should practice taking shelter when they hear sirens or broadcast messages.
Snow and sleet are expected to continue through Thursday afternoon before changing to all snow Thursday night.
Of the 25 weather-related accidents Thursday, most have been non-injury slide-offs.
Temperatures reached the mid-70s Thursday, setting a record high temperature for Columbia. The previous record was 68 degrees, set in 1994.
The melting should continue with temperatures reaching into the 60s this week, according to the National Weather Service.