Dayton Weather in January
Average highs run from 40°F on January 1 to 42°F on January 31, and lows from 26°F to 27°F. Normal precipitation for the month is 1.82 in over about 6 wet days.
January day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
January at a glance
- Average high
- 41°F
- Average low
- 27°F
- Precipitation
- 1.82 in
- Snowfall
- 13.0 in
- Record high
- 72°FJan 31, 2003
- Record low
- -27°FJan 21, 1937
- Chance of a freeze
- 100%
- Daylight
- 9 h 28 min to 10 h 12 min
- Cloud cover
- 58%
- Humidity
- 63%
- Dew point
- 21°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 |
|---|---|---|---|---|---|---|
| Jan 1 | 40°F | 26°F | 67°F 1964 | -10°F 1952 | 16% | 13% |
| Jan 2 | 40°F | 26°F | 67°F 2012 | -20°F 1924 | 16% | 13% |
| Jan 3 | 40°F | 26°F | 66°F 1927 | -16°F 1971 | 16% | 13% |
| Jan 4 | 40°F | 27°F | 63°F 2003 | -15°F 1949 | 16% | 13% |
| Jan 5 | 40°F | 27°F | 65°F 1927 | -12°F 1971 | 16% | 13% |
| Jan 6 | 40°F | 27°F | 68°F 1969 | -7°F 1894 | 16% | 13% |
| Jan 7 | 41°F | 27°F | 68°F 1962 | -7°F 1937 | 17% | 12% |
| Jan 8 | 41°F | 27°F | 66°F 1962 | -22°F 1937 | 17% | 12% |
| Jan 9 | 41°F | 27°F | 69°F 1990 | -26°F 1937 | 17% | 12% |
| Jan 10 | 41°F | 27°F | 62°F 1996 | -15°F 1937 | 17% | 12% |
| Jan 11 | 41°F | 27°F | 62°F 1953 | -15°F 1937 | 17% | 12% |
| Jan 12 | 41°F | 27°F | 69°F 1953 | -14°F 1993 | 17% | 12% |
| Jan 13 | 41°F | 27°F | 65°F 1961 | -9°F 2007 | 17% | 12% |
| Jan 14 | 41°F | 27°F | 64°F 1945 | -8°F 1932 | 18% | 12% |
| Jan 15 | 41°F | 27°F | 69°F 1943 | -5°F 1949 | 18% | 12% |
| Jan 16 | 41°F | 27°F | 68°F 2021 | -6°F 1949 | 18% | 12% |
| Jan 17 | 41°F | 27°F | 65°F 1959 | -10°F 1949 | 18% | 12% |
| Jan 18 | 41°F | 27°F | 70°F 1959 | -4°F 1988 | 18% | 12% |
| Jan 19 | 41°F | 27°F | 67°F 1971 | -2°F 1935 | 18% | 12% |
| Jan 20 | 41°F | 27°F | 65°F 1971 | -17°F 1937 | 18% | 12% |
| Jan 21 | 41°F | 27°F | 64°F 1950 | -27°F 1937 | 18% | 12% |
| Jan 22 | 41°F | 27°F | 69°F 1981 | -14°F 1937 | 19% | 12% |
| Jan 23 | 41°F | 27°F | 65°F 1948 | -13°F 1962 | 19% | 13% |
| Jan 24 | 41°F | 27°F | 65°F 1947 | -7°F 1962 | 19% | 13% |
| Jan 25 | 41°F | 27°F | 66°F 1975 | -16°F 1949 | 19% | 13% |
| Jan 26 | 41°F | 27°F | 65°F 1987 | -20°F 1949 | 19% | 13% |
| Jan 27 | 41°F | 27°F | 62°F 1987 | -5°F 1898 | 19% | 13% |
| Jan 28 | 41°F | 27°F | 64°F 1905 | -8°F 1949 | 19% | 13% |
| Jan 29 | 41°F | 27°F | 67°F 2024 | -9°F 1949 | 19% | 13% |
| Jan 30 | 41°F | 27°F | 67°F 2024 | -7°F 1949 | 19% | 13% |
| Jan 31 | 42°F | 27°F | 72°F 2003 | -9°F 1969 | 19% | 13% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PST).
- January 1
- sunrise 7:18 AM, sunset 4:46 PM
- January 31
- sunrise 7:06 AM, sunset 5:18 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.