A few weather facts about Christmas day in Rochester. Precipitation is recorded in inches. Snow on the ground is at 6 am. Temperature
| Normal High: | 22 | Normal Low: | 7 |
| Record High: | 50 (1936) |
| Record Low: | -25 (2000) |
| Lowest High: | -6 (1996) |
| Highest Low: | 31 (1973) |
Precipitation
| Record: | 0.75 (1948, 1893) |
| Record Snowfall | 10.3 (1955) |
| Record Snow on the Ground | 15 (1969) |
| Number of times with a trace or more of snowfall: | 44 |
| Number of times with measurable (over a trace) of snowfall: | 23 |
| Number of times with an inch or more of snowfall: | 12 |
| Climatological chance for a trace or more of snowfall: | 64% |
| Climatological chance for measurable (over a trace) of snowfall: | 33% |
| Climatological chance of an inch or more of snowfall: | 17% |
| Number of times with a trace or more of snow on the ground: | 67 |
| Number of times with an inch or more of snow on the ground: | 55 |
| Climatological chance of a trace or more on the ground: | 97% |
| Climatological chance of an inch or more on the ground: | 80% |
With a "white" Christmas generally considered an inch of snow on the ground or an inch falling that day, Rochester has had "white" Christmases 55 times (out of 69) since 1933, or 80% of the time. The last non-white Christmas was in 2002. There was no snowfall that day, and only a trace on the ground that morning. The years of 1936, 1941, 1942, and 1943 were excluded from the statistics due to missing data.
Non-"white" Christmases: 1944, 1949, 1953, 1958, 1965, 1966, 1967, 1979, 1980, 1982, 1986, 1988, 1997, 2002.
