Dayton Weather in December
Average highs run from 43°F on December 1 to 40°F on December 31, and lows from 28°F to 26°F. Normal precipitation for the month is 1.95 in over about 5 wet days.
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
- 40°F
- Average low
- 26°F
- Precipitation
- 1.95 in
- Snowfall
- 9.5 in
- Record high
- 75°FDec 4, 1958
- Record low
- -26°FDec 13, 1932
- Chance of a freeze
- 100%
- Daylight
- 9 h 37 min to 9 h 27 min
- Cloud cover
- 58%
- Humidity
- 63%
- Dew point
- 20°F
- Wind
- 6.0 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 | 43°F | 28°F | 70°F 2008 | 2°F 1936 | 15% | 9% |
| Dec 2 | 42°F | 28°F | 70°F 1977 | 6°F 1967 | 15% | 10% |
| Dec 3 | 42°F | 28°F | 73°F 1940 | 5°F 1973 | 15% | 10% |
| Dec 4 | 42°F | 28°F | 75°F 1958 | 2°F 1948 | 16% | 10% |
| Dec 5 | 42°F | 27°F | 71°F 1958 | -11°F 1972 | 16% | 11% |
| Dec 6 | 41°F | 27°F | 73°F 1958 | 0°F 1972 | 16% | 11% |
| Dec 7 | 41°F | 27°F | 70°F 1958 | 5°F 1959 | 16% | 11% |
| Dec 8 | 41°F | 27°F | 73°F 1958 | -5°F 2009 | 16% | 11% |
| Dec 9 | 41°F | 27°F | 67°F 1938 | -16°F 2009 | 16% | 11% |
| Dec 10 | 41°F | 27°F | 67°F 1993 | -6°F 2009 | 16% | 12% |
| Dec 11 | 40°F | 26°F | 66°F 1958 | -18°F 1972 | 16% | 12% |
| Dec 12 | 40°F | 26°F | 68°F 1958 | -18°F 1932 | 16% | 12% |
| Dec 13 | 40°F | 26°F | 66°F 1969 | -26°F 1932 | 16% | 12% |
| Dec 14 | 40°F | 26°F | 69°F 1946 | -22°F 1932 | 16% | 12% |
| Dec 15 | 40°F | 26°F | 67°F 1939 | -16°F 1931 | 16% | 12% |
| Dec 16 | 40°F | 26°F | 68°F 1939 | -15°F 1931 | 16% | 12% |
| Dec 17 | 40°F | 26°F | 70°F 1939 | -5°F 1933 | 16% | 12% |
| Dec 18 | 40°F | 26°F | 65°F 1958 | -6°F 1928 | 15% | 12% |
| Dec 19 | 40°F | 26°F | 66°F 1958 | -5°F 1992 | 15% | 13% |
| Dec 20 | 40°F | 26°F | 63°F 1934 | -11°F 1978 | 15% | 13% |
| Dec 21 | 40°F | 26°F | 64°F 2018 | -18°F 1968 | 15% | 13% |
| Dec 22 | 40°F | 26°F | 64°F 1901 | -19°F 1990 | 15% | 13% |
| Dec 23 | 40°F | 26°F | 67°F 1901 | -19°F 1990 | 15% | 13% |
| Dec 24 | 40°F | 26°F | 68°F 1902 | -17°F 1990 | 15% | 13% |
| Dec 25 | 40°F | 26°F | 67°F 1902 | -1°F 1930 | 15% | 13% |
| Dec 26 | 40°F | 26°F | 63°F 1928 | -4°F 1988 | 15% | 13% |
| Dec 27 | 40°F | 26°F | 67°F 1980 | -12°F 1988 | 16% | 13% |
| Dec 28 | 40°F | 26°F | 64°F 1961 | -3°F 1948 | 16% | 13% |
| Dec 29 | 40°F | 26°F | 62°F 1998 | -7°F 1948 | 16% | 13% |
| Dec 30 | 40°F | 26°F | 62°F 1961 | -4°F 1990 | 16% | 13% |
| Dec 31 | 40°F | 26°F | 64°F 1945 | -5°F 1987 | 16% | 13% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PST).
- December 1
- sunrise 6:59 AM, sunset 4:36 PM
- December 31
- sunrise 7:18 AM, sunset 4:45 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00268761 (Virginia City), public domain. Records: NOAA GHCN-Daily, station USC00261485, 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.