Jefferson County Weather in January
Average highs run from 57°F on January 1 to 58°F on January 31, and lows from 34°F to 35°F. Normal precipitation for the month is 4.36 in over about 10 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
- 57°F
- Average low
- 34°F
- Precipitation
- 4.36 in
- Snowfall
- 0.1 in
- Record high
- 84°FJan 20, 1942
- Record low
- -1°FJan 20, 1985
- Chance of a freeze
- 100%
- Daylight
- 10 h 01 min to 10 h 35 min
- Cloud cover
- 56%
- Humidity
- 81%
- Dew point
- 39°F
- Wind
- 7.8 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 | 57°F | 34°F | 78°F 1974 | 12°F 1918 | 32% | 1% |
| Jan 2 | 57°F | 34°F | 82°F 2022 | 12°F 1918 | 32% | 1% |
| Jan 3 | 57°F | 34°F | 79°F 1952 | 14°F 1979 | 32% | 1% |
| Jan 4 | 57°F | 34°F | 82°F 2020 | 14°F 1919 | 32% | 1% |
| Jan 5 | 57°F | 34°F | 77°F 1950 | 12°F 1920 | 32% | 1% |
| Jan 6 | 57°F | 34°F | 77°F 1950 | 13°F 1981 | 32% | 1% |
| Jan 7 | 57°F | 34°F | 79°F 1913 | 12°F 1970 | 32% | 1% |
| Jan 8 | 57°F | 34°F | 78°F 1946 | 9°F 1970 | 32% | 1% |
| Jan 9 | 57°F | 34°F | 75°F 1907 | 5°F 1970 | 32% | 0% |
| Jan 10 | 57°F | 34°F | 80°F 2026 | 5°F 1970 | 32% | 0% |
| Jan 11 | 57°F | 34°F | 82°F 2026 | 7°F 1982 | 32% | 0% |
| Jan 12 | 57°F | 34°F | 80°F 1916 | 7°F 1982 | 32% | 0% |
| Jan 13 | 57°F | 34°F | 80°F 2013 | 10°F 1981 | 32% | 0% |
| Jan 14 | 57°F | 34°F | 80°F 2017 | 9°F 1981 | 32% | 0% |
| Jan 15 | 57°F | 34°F | 79°F 2013 | 13°F 1912 | 32% | 0% |
| Jan 16 | 57°F | 34°F | 80°F 1952 | 13°F 1912 | 32% | 0% |
| Jan 17 | 57°F | 34°F | 81°F 2013 | 10°F 1977 | 32% | 0% |
| Jan 18 | 57°F | 34°F | 79°F 1950 | 9°F 1977 | 32% | 0% |
| Jan 19 | 57°F | 34°F | 78°F 2001 | 12°F 1977 | 32% | 0% |
| Jan 20 | 57°F | 34°F | 84°F 1942 | -1°F 1985 | 32% | 0% |
| Jan 21 | 57°F | 34°F | 78°F 1959 | -1°F 1985 | 32% | 0% |
| Jan 22 | 57°F | 34°F | 79°F 1906 | 4°F 1985 | 32% | 0% |
| Jan 23 | 57°F | 34°F | 79°F 1920 | 13°F 2005 | 32% | 0% |
| Jan 24 | 58°F | 34°F | 80°F 1920 | 10°F 1963 | 32% | 0% |
| Jan 25 | 58°F | 34°F | 80°F 1950 | 11°F 1963 | 32% | 0% |
| Jan 26 | 58°F | 34°F | 81°F 1950 | 12°F 1985 | 32% | 0% |
| Jan 27 | 58°F | 34°F | 81°F 1950 | 12°F 1985 | 32% | 0% |
| Jan 28 | 58°F | 34°F | 81°F 1944 | 9°F 1986 | 32% | 0% |
| Jan 29 | 58°F | 34°F | 79°F 1911 | 9°F 1986 | 32% | 0% |
| Jan 30 | 58°F | 35°F | 83°F 1975 | 4°F 1966 | 32% | 0% |
| Jan 31 | 58°F | 35°F | 83°F 1975 | 5°F 1966 | 32% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- January 1
- sunrise 7:33 AM, sunset 5:34 PM
- January 31
- sunrise 7:26 AM, sunset 6:01 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00095314 (Louisville 1 E), public domain. Records: NOAA GHCN-Daily, station USC00099194, 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.