Rochester Weather in December
Average highs run from 39°F on December 1 to 30°F on December 31, and lows from 23°F to 14°F. Normal precipitation for the month is 1.93 in.
December day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
December at a glance
- Average high
- 34°F
- Average low
- 18°F
- Precipitation
- 1.93 in
- Snowfall
- 7.7 in
- Record high
- 67°FDec 6, 2001
- Record low
- -18°FDec 21, 1989
- Chance of a freeze
- 100%
- Daylight
- 9 h 16 min to 9 h 06 min
- Cloud cover
- 75%
- Humidity
- 88%
- Dew point
- 22°F
- Wind
- 12.1 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Dec 1 | 39°F | 23°F | 65°F 1962 | -2°F 1976 | 10% | |
| Dec 2 | 39°F | 23°F | 63°F 1970 | -5°F 1976 | 10% | |
| Dec 3 | 39°F | 23°F | 63°F 1982 | -4°F 1976 | 11% | |
| Dec 4 | 38°F | 22°F | 66°F 2012 | 1°F 2002 | 11% | |
| Dec 5 | 38°F | 22°F | 61°F 2017 | -2°F 2005 | 11% | |
| Dec 6 | 37°F | 22°F | 67°F 2001 | -7°F 2007 | 11% | |
| Dec 7 | 37°F | 21°F | 58°F 1951 | -8°F 2005 | 12% | |
| Dec 8 | 37°F | 21°F | 52°F 1963 | -8°F 2005 | 12% | |
| Dec 9 | 36°F | 21°F | 56°F 1966 | -13°F 1958 | 12% | |
| Dec 10 | 36°F | 20°F | 56°F 1952 | -12°F 1958 | 12% | |
| Dec 11 | 36°F | 20°F | 56°F 1979 | -11°F 1972 | 12% | |
| Dec 12 | 35°F | 19°F | 53°F 1965 | -8°F 1972 | 12% | |
| Dec 13 | 35°F | 19°F | 58°F 2015 | -10°F 2000 | 13% | |
| Dec 14 | 35°F | 19°F | 60°F 2015 | -13°F 1958 | 13% | |
| Dec 15 | 34°F | 18°F | 60°F 1975 | -10°F 1985 | 13% | |
| Dec 16 | 34°F | 18°F | 65°F 2021 | -12°F 1951 | 13% | |
| Dec 17 | 34°F | 18°F | 58°F 1984 | -11°F 1951 | 13% | |
| Dec 18 | 33°F | 17°F | 53°F 1977 | -10°F 1985 | 13% | |
| Dec 19 | 33°F | 17°F | 53°F 2002 | -14°F 2016 | 14% | |
| Dec 20 | 33°F | 17°F | 46°F 1957 | -13°F 2016 | 14% | |
| Dec 21 | 32°F | 17°F | 58°F 1967 | -18°F 1989 | 14% | |
| Dec 22 | 32°F | 16°F | 55°F 1967 | -18°F 1989 | 14% | |
| Dec 23 | 32°F | 16°F | 53°F 1957 | -13°F 1960 | 14% | |
| Dec 24 | 32°F | 16°F | 56°F 2015 | -16°F 1951 | 14% | |
| Dec 25 | 31°F | 15°F | 57°F 1982 | -13°F 2000 | 15% | |
| Dec 26 | 31°F | 15°F | 59°F 1982 | -15°F 2000 | 15% | |
| Dec 27 | 31°F | 15°F | 55°F 2019 | -11°F 1962 | 15% | |
| Dec 28 | 31°F | 14°F | 54°F 1984 | -10°F 2017 | 15% | |
| Dec 29 | 30°F | 14°F | 61°F 1984 | -11°F 1976 | 15% | |
| Dec 30 | 30°F | 14°F | 56°F 2022 | -10°F 1963 | 16% | |
| Dec 31 | 30°F | 14°F | 55°F 1965 | -14°F 1963 | 16% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CST).
- December 1
- sunrise 7:04 AM, sunset 4:20 PM
- December 31
- sunrise 7:23 AM, sunset 4:29 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00477314 (Rochester Wwtp), public domain. Records: NOAA GHCN-Daily, station USC00471205, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.