January is one of the cooler months of the year in Johnson City, with average highs near 5.9°C and lows around -3.8°C (mean 1.1°C). It is about average for rainfall, averaging 91 mm of rainfall and 83% relative humidity across the period.
January is one of the cooler months of the year in Johnson City. Across 45 years of records, the warmest January in Johnson City was 2017 — when the month averaged 5.6°C — while the coldest was 1985 at -2.9°C. Typical January days reach 5.9°C with nights near -3.8°C. The long-term trend is warming, about 0.4°C per decade.
January is about average for rainfall in Johnson City, averaging 91 mm of rainfall. The wettest January on record was 2013 with 212 mm, while the driest was 1981 at 35 mm.
Relative humidity in Johnson City during January averages 83%. The most humid January was 1996 at 88%, and the least humid was 2008 at 77%.
January receives about 2.2 kWh/m²/day of solar energy in Johnson City. The sunniest January was 2002 at 2.6 kWh/m²/day, and the cloudiest were 1991 and 1996 at 1.9.
Average wind speed in Johnson City during January is 1.4 m/s. The windiest January was 1982 at 1.8 m/s, while the calmest were 2002, 2011 and 2021, among others at 1.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | -0.6°C | 1.8°C | 1.6°C | 0.9°C | 1.8°C | +2.4°C |
| Avg High | 4.2°C | 6.6°C | 6.6°C | 5.6°C | 6.6°C | +2.4°C |
| Avg Low | -5.4°C | -2.9°C | -3.4°C | -3.9°C | -3.0°C | +2.4°C |
| Avg Rain | 76 mm | 110 mm | 85 mm | 84 mm | 102 mm | +26 mm |
January temperatures in Johnson City have risen by about 2.7°C between 1981–1985 and 2021–2025.
January has ranged from a record low of -24.5°C (1994) to a record high of 22°C (2022).
Rainfall in January is about average for rainfall, averaging 91 mm, with a wettest year of 212 mm.
A quieter season to visit Johnson City
If your dates are flexible, the more temperate months of June and September tend to be the most comfortable for visiting Johnson City. That said, January — with days averaging 5.9°C and nights around -3.8°C (mean 1.1°C) and higher rainfall (91 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 3.3°C | -1.8°C | -6.9°C | 14.9°C | -14.6°C | 75 mm | 80% | 1.3 m/s | 2.4 |
| 2024 | 5.9°C | 0.9°C | -4.1°C | 18.2°C | -18.2°C | 124 mm | 85% | 1.5 m/s | 2.1 |
| 2023 | 10.1°C | 5.4°C | 0.7°C | 18.6°C | -6.7°C | 118 mm | 85% | 1.3 m/s | 2 |
| 2022 | 5.2°C | 0.2°C | -4.8°C | 22.0°C | -10.3°C | 101 mm | 82% | 1.4 m/s | 2.3 |
| 2021 | 6.3°C | 1.9°C | -2.4°C | 14.6°C | -7.1°C | 78 mm | 86% | 1.2 m/s | 2 |
| 2020 | 9.0°C | 4.4°C | -0.2°C | 20.7°C | -9.8°C | 116 mm | 85% | 1.4 m/s | 2.1 |
| 2019 | 6.1°C | 1.6°C | -2.8°C | 15.5°C | -12.6°C | 90 mm | 84% | 1.5 m/s | 2 |
| 2018 | 4.7°C | -0.7°C | -6.0°C | 18.2°C | -15.9°C | 50 mm | 78% | 1.4 m/s | 2.4 |
| 2017 🔥 | 9.8°C | 5.6°C | 1.3°C | 17.7°C | -13.2°C | 91 mm | 84% | 1.4 m/s | 2 |
| 2016 | 4.5°C | -0.3°C | -5.0°C | 15.5°C | -14.1°C | 52 mm | 82% | 1.3 m/s | 2.4 |
| 2015 | 5.2°C | 0.4°C | -4.4°C | 13.8°C | -16.5°C | 52 mm | 82% | 1.3 m/s | 2.3 |
| 2014 | 2.7°C | -2.5°C | -7.8°C | 12.9°C | -18.9°C | 49 mm | 78% | 1.5 m/s | 2.5 |
| 2013 🌧️ | 7.9°C | 3.1°C | -1.6°C | 21.4°C | -10.6°C | 212 mm | 86% | 1.3 m/s | 2.1 |
| 2012 | 8.9°C | 3.6°C | -1.8°C | 16.4°C | -9.5°C | 98 mm | 84% | 1.5 m/s | 2.1 |
| 2011 | 3.8°C | -0.8°C | -5.3°C | 14.5°C | -14.1°C | 45 mm | 84% | 1.2 m/s | 2.2 |
| 2010 | 2.8°C | -1.4°C | -5.5°C | 12.5°C | -13.6°C | 95 mm | 84% | 1.4 m/s | 2.1 |
| 2009 | 5.5°C | 0.5°C | -4.5°C | 16.9°C | -17.1°C | 132 mm | 84% | 1.3 m/s | 2.2 |
| 2008 | 6.5°C | 1.2°C | -4.1°C | 18.5°C | -13.8°C | 73 mm | 77% | 1.4 m/s | 2.4 |
| 2007 | 8.3°C | 3.2°C | -1.9°C | 20.5°C | -11.1°C | 48 mm | 80% | 1.5 m/s | 2.4 |
| 2006 | 10.5°C | 5.2°C | -0.1°C | 17.1°C | -5.6°C | 108 mm | 83% | 1.5 m/s | 2.3 |
| 2005 | 8.2°C | 3.4°C | -1.3°C | 18.4°C | -13.9°C | 82 mm | 85% | 1.4 m/s | 2 |
| 2004 | 5.0°C | 0.1°C | -4.7°C | 18.8°C | -13.9°C | 76 mm | 82% | 1.4 m/s | 2.3 |
| 2003 | 2.9°C | -1.3°C | -5.5°C | 13.4°C | -14.4°C | 53 mm | 81% | 1.4 m/s | 2.3 |
| 2002 | 8.5°C | 3.1°C | -2.2°C | 21.0°C | -11.3°C | 120 mm | 81% | 1.2 m/s | 2.6 |
| 2001 | 5.0°C | 0.2°C | -4.7°C | 13.3°C | -10.9°C | 70 mm | 80% | 1.2 m/s | 2.3 |
| 2000 | 5.4°C | 0.2°C | -4.9°C | 19.5°C | -15.9°C | 83 mm | 80% | 1.5 m/s | 2.3 |
| 1999 | 8.1°C | 3.2°C | -1.6°C | 18.7°C | -13.4°C | 138 mm | 85% | 1.6 m/s | 2.1 |
| 1998 | 8.1°C | 3.7°C | -0.7°C | 18.9°C | -9.9°C | 146 mm | 87% | 1.2 m/s | 2.1 |
| 1997 | 5.8°C | 0.8°C | -4.2°C | 18.8°C | -18.1°C | 70 mm | 84% | 1.6 m/s | 2.3 |
| 1996 | 4.4°C | -0.6°C | -5.5°C | 16.2°C | -13.9°C | 167 mm | 88% | 1.6 m/s | 1.9 |
| 1995 | 6.9°C | 2.2°C | -2.5°C | 18.2°C | -14.8°C | 150 mm | 82% | 1.5 m/s | 2 |
| 1994 | 2.4°C | -2.2°C | -6.8°C | 13.4°C | -24.5°C | 110 mm | 88% | 1.4 m/s | 2 |
| 1993 | 8.5°C | 3.6°C | -1.4°C | 15.5°C | -6.4°C | 79 mm | 84% | 1.3 m/s | 2 |
| 1992 | 6.6°C | 1.7°C | -3.2°C | 12.9°C | -12.6°C | 74 mm | 85% | 1.4 m/s | 2.4 |
| 1991 | 6.9°C | 2.4°C | -2.1°C | 11.9°C | -9.5°C | 72 mm | 87% | 1.3 m/s | 1.9 |
| 1990 | 8.7°C | 3.6°C | -1.4°C | 17.0°C | -6.4°C | 90 mm | 87% | 1.3 m/s | 2.1 |
| 1989 | 9.3°C | 4.2°C | -1.0°C | 17.1°C | -6.4°C | 105 mm | 80% | 1.4 m/s | 2.3 |
| 1988 | 3.1°C | -1.6°C | -6.3°C | 14.3°C | -15.1°C | 65 mm | 82% | 1.3 m/s | 2.1 |
| 1987 | 4.3°C | -0.1°C | -4.6°C | 12.8°C | -19.7°C | 101 mm | 88% | 1.2 m/s | 2.1 |
| 1986 | 4.6°C | -0.7°C | -6.0°C | 11.7°C | -16.8°C | 41 mm | 80% | 1.3 m/s | 2.3 |
| 1985 ❄️ | 1.5°C | -2.9°C | -7.4°C | 18.1°C | -24.4°C | 95 mm | 84% | 1.7 m/s | 2.1 |
| 1984 | 3.9°C | -0.9°C | -5.7°C | 11.8°C | -18.7°C | 54 mm | 85% | 1.2 m/s | 2.3 |
| 1983 | 5.0°C | 0.6°C | -3.8°C | 11.0°C | -14.1°C | 58 mm | 84% | 1.3 m/s | — |
| 1982 | 3.1°C | -1.9°C | -6.9°C | 14.1°C | -23.7°C | 132 mm | 83% | 1.8 m/s | — |
| 1981 | 3.1°C | -2.1°C | -7.3°C | 13.6°C | -16.3°C | 35 mm | 79% | 1.2 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 5.9°C with lows near -3.8°C (mean 1.1°C), based on 45 years of NASA POWER data.
January averages 91 mm of rainfall in Johnson City, about average for rainfall. The wettest on record was 212 mm in 2013.
The hottest January reached 22°C in 2022. The coldest dipped to -24.5°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 2.7°C. Daytime highs moved from 3.3°C to 6.2°C and overnight lows from -6.2°C to -3.5°C over the same span.
January is one of the cooler months of the year in Johnson City and about average for rainfall, so plan for around 5.9°C daytime highs and -3.8°C at night.
Yes — January is the coldest month of the year in Johnson City, averaging 1.1°C.
For January in Johnson City, pack warm layers and a jacket for chilly mornings, with typical highs of 5.9°C and lows of -3.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in January averages 83% — quite humid.
Average wind speed in January is 1.4 m/s. The windiest January on record averaged 1.8 m/s (1982).
The wettest January on record was 2013 with 212 mm. On average, January sees 91 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Johnson City behaves each January, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for January specifically, along with year-by-year records and how the month has changed over the decades.
