Dayton Weather in January
Average highs run from 36°F on January 1 to 35°F on January 31, and lows from 19°F to 16°F. Normal precipitation for the month is 3.37 in over about 15 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
- 35°F
- Average low
- 17°F
- Precipitation
- 3.37 in
- Snowfall
- 12.4 in
- Record high
- 75°FJan 25, 1950
- Record low
- -24°FJan 19, 1994
- Chance of a freeze
- 100%
- Daylight
- 9 h 18 min to 10 h 05 min
- Cloud cover
- 77%
- Humidity
- 90%
- Dew point
- 21°F
- Wind
- 7.4 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 | 36°F | 19°F | 70°F 1985 | -10°F 2018 | 47% | 15% |
| Jan 2 | 36°F | 19°F | 64°F 2000 | -11°F 2018 | 47% | 16% |
| Jan 3 | 35°F | 19°F | 64°F 2000 | -5°F 2018 | 47% | 16% |
| Jan 4 | 35°F | 19°F | 71°F 1997 | -10°F 1981 | 47% | 16% |
| Jan 5 | 35°F | 19°F | 66°F 1998 | -6°F 1968 | 47% | 17% |
| Jan 6 | 35°F | 18°F | 60°F 2007 | -4°F 1981 | 47% | 17% |
| Jan 7 | 35°F | 18°F | 64°F 1998 | -11°F 2018 | 47% | 17% |
| Jan 8 | 35°F | 18°F | 69°F 2008 | -11°F 2018 | 47% | 17% |
| Jan 9 | 35°F | 18°F | 67°F 2008 | -11°F 1958 | 47% | 18% |
| Jan 10 | 35°F | 18°F | 62°F 2026 | -9°F 1994 | 47% | 18% |
| Jan 11 | 35°F | 17°F | 63°F 1975 | -11°F 1982 | 47% | 18% |
| Jan 12 | 34°F | 17°F | 69°F 2020 | -13°F 1981 | 47% | 18% |
| Jan 13 | 34°F | 17°F | 70°F 1972 | -15°F 1977 | 46% | 18% |
| Jan 14 | 34°F | 17°F | 69°F 2013 | -2°F 1957 | 46% | 18% |
| Jan 15 | 34°F | 17°F | 65°F 1995 | -11°F 1948 | 46% | 18% |
| Jan 16 | 34°F | 17°F | 60°F 1949 | -12°F 1994 | 46% | 19% |
| Jan 17 | 34°F | 17°F | 65°F 1990 | -18°F 1965 | 46% | 19% |
| Jan 18 | 34°F | 16°F | 62°F 1973 | -15°F 1948 | 46% | 19% |
| Jan 19 | 34°F | 16°F | 60°F 1949 | -24°F 1994 | 45% | 19% |
| Jan 20 | 34°F | 16°F | 66°F 1951 | -16°F 1985 | 45% | 19% |
| Jan 21 | 34°F | 16°F | 67°F 1959 | -24°F 1994 | 45% | 19% |
| Jan 22 | 34°F | 16°F | 65°F 2017 | -19°F 1984 | 45% | 19% |
| Jan 23 | 34°F | 16°F | 64°F 2017 | -14°F 1961 | 44% | 19% |
| Jan 24 | 34°F | 16°F | 66°F 1967 | -15°F 1963 | 44% | 19% |
| Jan 25 | 34°F | 16°F | 75°F 1950 | -22°F 1961 | 44% | 19% |
| Jan 26 | 34°F | 16°F | 66°F 1950 | -21°F 1948 | 44% | 19% |
| Jan 27 | 35°F | 16°F | 70°F 2002 | -9°F 2003 | 43% | 19% |
| Jan 28 | 35°F | 16°F | 70°F 2002 | -16°F 1948 | 43% | 19% |
| Jan 29 | 35°F | 16°F | 66°F 1947 | -22°F 1948 | 43% | 19% |
| Jan 30 | 35°F | 16°F | 67°F 1947 | -13°F 1955 | 43% | 18% |
| Jan 31 | 35°F | 16°F | 69°F 2013 | -17°F 1948 | 43% | 18% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- January 1
- sunrise 7:42 AM, sunset 5:00 PM
- January 31
- sunrise 7:28 AM, sunset 5:33 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00367229 (Putneyville 2 Se Dam), public domain. Records: NOAA GHCN-Daily, station USC00364214, 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.