Dayton Weather in January
Average highs run from 40°F on January 1 to 43°F on January 31, and lows from 26°F to 27°F. Normal precipitation for the month is 2.08 in over about 14 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
- 42°F
- Average low
- 26°F
- Precipitation
- 2.08 in
- Snowfall
- 6.3 in
- Record high
- 70°FJan 20, 1968
- Record low
- -18°FJan 27, 1957
- Chance of a freeze
- 100%
- Daylight
- 8 h 41 min to 9 h 39 min
- Cloud cover
- 74%
- Humidity
- 84%
- Dew point
- 28°F
- Wind
- 9.4 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 | 63°F 1964 | -6°F 1979 | 44% | 12% |
| Jan 2 | 40°F | 26°F | 60°F 2003 | 2°F 1978 | 44% | 12% |
| Jan 3 | 40°F | 26°F | 62°F 2020 | 0°F 1959 | 44% | 12% |
| Jan 4 | 40°F | 26°F | 69°F 2012 | -10°F 2004 | 44% | 12% |
| Jan 5 | 40°F | 26°F | 61°F 1983 | -12°F 2004 | 44% | 12% |
| Jan 6 | 40°F | 26°F | 62°F 1954 | -10°F 1974 | 44% | 12% |
| Jan 7 | 40°F | 26°F | 64°F 2002 | -9°F 1974 | 44% | 12% |
| Jan 8 | 41°F | 26°F | 65°F 1953 | -10°F 1974 | 44% | 12% |
| Jan 9 | 41°F | 26°F | 64°F 1959 | -7°F 1974 | 44% | 12% |
| Jan 10 | 41°F | 26°F | 60°F 1961 | -2°F 1974 | 44% | 12% |
| Jan 11 | 41°F | 26°F | 65°F 1953 | -3°F 1963 | 44% | 12% |
| Jan 12 | 41°F | 26°F | 67°F 2026 | -6°F 2017 | 44% | 12% |
| Jan 13 | 41°F | 26°F | 63°F 2021 | -14°F 2024 | 44% | 11% |
| Jan 14 | 41°F | 26°F | 62°F 1973 | -6°F 1950 | 44% | 11% |
| Jan 15 | 41°F | 26°F | 65°F 1974 | -3°F 1950 | 43% | 11% |
| Jan 16 | 42°F | 26°F | 63°F 1976 | -1°F 1950 | 43% | 11% |
| Jan 17 | 42°F | 27°F | 66°F 2018 | -7°F 1950 | 43% | 11% |
| Jan 18 | 42°F | 27°F | 63°F 1986 | -2°F 1957 | 43% | 11% |
| Jan 19 | 42°F | 27°F | 69°F 2005 | -2°F 1957 | 43% | 11% |
| Jan 20 | 42°F | 27°F | 70°F 1968 | -7°F 1954 | 43% | 11% |
| Jan 21 | 42°F | 27°F | 61°F 1968 | -4°F 1962 | 43% | 10% |
| Jan 22 | 42°F | 27°F | 60°F 2016 | 2°F 1962 | 43% | 10% |
| Jan 23 | 42°F | 27°F | 62°F 1953 | -5°F 1969 | 43% | 10% |
| Jan 24 | 43°F | 27°F | 64°F 1953 | -3°F 1957 | 43% | 10% |
| Jan 25 | 43°F | 27°F | 62°F 1993 | -9°F 1957 | 43% | 10% |
| Jan 26 | 43°F | 27°F | 65°F 2003 | -14°F 1957 | 43% | 10% |
| Jan 27 | 43°F | 27°F | 61°F 1983 | -18°F 1957 | 42% | 10% |
| Jan 28 | 43°F | 27°F | 65°F 2024 | -13°F 1957 | 42% | 10% |
| Jan 29 | 43°F | 27°F | 67°F 2018 | -14°F 1950 | 42% | 9% |
| Jan 30 | 43°F | 27°F | 64°F 1992 | -16°F 1950 | 42% | 9% |
| Jan 31 | 43°F | 27°F | 67°F 1992 | -13°F 1950 | 42% | 9% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PST).
- January 1
- sunrise 7:35 AM, sunset 4:16 PM
- January 31
- sunrise 7:16 AM, sunset 4:55 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00452030 (Dayton 1 Wsw), public domain. Records: NOAA GHCN-Daily, station USW00024160, 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.