Jefferson County Weather in January
Average highs run from 44°F on January 1 to 45°F on January 31, and lows from 29°F to 28°F. Normal precipitation for the month is 3.39 in over about 11 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
- 44°F
- Average low
- 28°F
- Precipitation
- 3.39 in
- Snowfall
- 4.5 in
- Record high
- 79°FJan 8, 2008
- Record low
- -3°FJan 6, 2014
- Chance of a freeze
- 100%
- Daylight
- 9 h 34 min to 10 h 16 min
- Cloud cover
- 72%
- Humidity
- 86%
- Dew point
- 28°F
- Wind
- 9.2 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 | 44°F | 29°F | 65°F 2021 | 3°F 2018 | 39% | 11% |
| Jan 2 | 44°F | 29°F | 71°F 2006 | -1°F 2018 | 38% | 11% |
| Jan 3 | 44°F | 29°F | 67°F 2004 | 5°F 2018 | 38% | 11% |
| Jan 4 | 44°F | 29°F | 68°F 2004 | 7°F 2018 | 38% | 11% |
| Jan 5 | 44°F | 29°F | 68°F 2007 | 8°F 2018 | 38% | 11% |
| Jan 6 | 43°F | 29°F | 64°F 2008 | -3°F 2014 | 38% | 11% |
| Jan 7 | 43°F | 28°F | 70°F 2008 | -3°F 2014 | 38% | 11% |
| Jan 8 | 43°F | 28°F | 79°F 2008 | 1°F 2015 | 38% | 11% |
| Jan 9 | 43°F | 28°F | 68°F 2026 | 8°F 2025 | 38% | 12% |
| Jan 10 | 43°F | 28°F | 67°F 2020 | 7°F 2015 | 38% | 12% |
| Jan 11 | 43°F | 28°F | 70°F 2020 | 10°F 2016 | 37% | 12% |
| Jan 12 | 43°F | 28°F | 70°F 2005 | 15°F 2003 | 37% | 12% |
| Jan 13 | 43°F | 28°F | 69°F 2013 | 11°F 2018 | 37% | 12% |
| Jan 14 | 43°F | 28°F | 63°F 2007 | 6°F 2018 | 37% | 12% |
| Jan 15 | 43°F | 28°F | 67°F 2020 | 4°F 2009 | 37% | 12% |
| Jan 16 | 43°F | 27°F | 60°F 2012 | -1°F 2009 | 37% | 13% |
| Jan 17 | 43°F | 27°F | 64°F 2012 | 5°F 2024 | 36% | 13% |
| Jan 18 | 43°F | 27°F | 58°F 2023 | 7°F 2016 | 36% | 13% |
| Jan 19 | 43°F | 27°F | 64°F 2023 | 7°F 2025 | 36% | 13% |
| Jan 20 | 43°F | 27°F | 64°F 2006 | 2°F 2024 | 36% | 13% |
| Jan 21 | 44°F | 27°F | 68°F 2017 | 2°F 2024 | 36% | 13% |
| Jan 22 | 44°F | 27°F | 64°F 2017 | 1°F 2025 | 36% | 13% |
| Jan 23 | 44°F | 27°F | 64°F 2002 | 4°F 2014 | 35% | 13% |
| Jan 24 | 44°F | 27°F | 64°F 2002 | 1°F 2014 | 35% | 13% |
| Jan 25 | 44°F | 27°F | 63°F 2017 | 7°F 2008 | 35% | 14% |
| Jan 26 | 44°F | 27°F | 62°F 2018 | 4°F 2026 | 35% | 14% |
| Jan 27 | 44°F | 27°F | 61°F 2002 | 2°F 2026 | 35% | 14% |
| Jan 28 | 44°F | 28°F | 69°F 2002 | 2°F 2014 | 35% | 14% |
| Jan 29 | 45°F | 28°F | 70°F 2002 | 4°F 2014 | 35% | 14% |
| Jan 30 | 45°F | 28°F | 70°F 2013 | 2°F 2004 | 35% | 14% |
| Jan 31 | 45°F | 28°F | 68°F 2002 | -2°F 2004 | 35% | 14% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- January 1
- sunrise 7:59 AM, sunset 5:33 PM
- January 31
- sunrise 7:48 AM, sunset 6:04 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00093821 (Louisville Intl AP), public domain. Records: NOAA GHCN-Daily, station USW00013810, 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.