January is one of the cooler months of the year in Stockton, with average highs near 14.6°C and lows around 4.7°C (mean 9.7°C). It is a relatively wet time of year, averaging 90 mm of rainfall and 77% relative humidity across the period.
January is one of the cooler months of the year in Stockton. Across 45 years of records, the warmest January in Stockton was 2014 — when the month averaged 12.5°C — while the coldest was 1982 at 6.2°C. Typical January days reach 14.6°C with nights near 4.7°C. The long-term trend is warming, about 0.2°C per decade.
January is a relatively wet time of year in Stockton, averaging 90 mm of rainfall. The wettest January on record was 2017 with 264 mm, while the driest was 2015 at 0 mm.
Relative humidity in Stockton during January averages 77%. The most humid January was 1998 at 87%, and the least humid was 2014 at 55%.
January receives about 2.5 kWh/m²/day of solar energy in Stockton. The sunniest January was 2007 at 3.1 kWh/m²/day, and the cloudiest was 2010 at 1.9.
Average wind speed in Stockton during January is 1.7 m/s. The windiest January was 1995 at 3.5 m/s, while the calmest was 2015 at 1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 9.2°C | 9.8°C | 9.1°C | 10.0°C | 10.0°C | +0.8°C |
| Avg High | 14.4°C | 14.7°C | 14.0°C | 14.8°C | 15.0°C | +0.6°C |
| Avg Low | 4.1°C | 4.8°C | 4.3°C | 5.3°C | 5.2°C | +1.1°C |
| Avg Rain | 77 mm | 124 mm | 74 mm | 89 mm | 80 mm | +2 mm |
January temperatures in Stockton have risen by about 1.1°C between 1981–1985 and 2021–2025.
January has ranged from a record low of -4.6°C (1997) to a record high of 25°C (2021).
Rainfall in January is a relatively wet time of year, averaging 90 mm, with a wettest year of 264 mm.
A quieter season to visit Stockton
If your dates are flexible, the more temperate months of June and September tend to be the most comfortable for visiting Stockton. That said, January — with days averaging 14.6°C and nights around 4.7°C (mean 9.7°C) and higher rainfall (90 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 | 15.7°C | 10.0°C | 4.4°C | 19.8°C | 1.3°C | 13 mm | 74% | 1.4 m/s | 3 |
| 2024 | 15.4°C | 11.0°C | 6.6°C | 23.8°C | -0.7°C | 118 mm | 84% | 1.7 m/s | 2.1 |
| 2023 | 12.8°C | 8.5°C | 4.3°C | 17.5°C | -1.5°C | 209 mm | 85% | 2.6 m/s | 2.5 |
| 2022 | 15.4°C | 10.2°C | 5.1°C | 18.1°C | -0.2°C | 3 mm | 79% | 1.2 m/s | 2.8 |
| 2021 | 15.9°C | 10.6°C | 5.4°C | 25.0°C | 0.5°C | 105 mm | 72% | 1.9 m/s | 2.5 |
| 2020 | 14.6°C | 10.0°C | 5.3°C | 19.2°C | 2.2°C | 32 mm | 85% | 1.4 m/s | 2.4 |
| 2019 | 15.7°C | 11.0°C | 6.4°C | 19.3°C | -0.9°C | 107 mm | 79% | 2 m/s | 2.3 |
| 2018 | 16.0°C | 11.4°C | 6.8°C | 21.4°C | 2.0°C | 101 mm | 83% | 1.4 m/s | 2.2 |
| 2017 🌧️ | 11.5°C | 7.9°C | 4.2°C | 16.9°C | -0.1°C | 264 mm | 86% | 2.3 m/s | 2.3 |
| 2016 | 14.3°C | 10.3°C | 6.2°C | 19.0°C | 0.7°C | 153 mm | 83% | 1.9 m/s | 2 |
| 2015 | 15.6°C | 10.7°C | 5.8°C | 20.8°C | -1.8°C | 0 mm | 82% | 1 m/s | 2.7 |
| 2014 🔥 | 18.6°C | 12.5°C | 6.3°C | 23.6°C | 3.6°C | 7 mm | 55% | 1.2 m/s | 2.9 |
| 2013 | 12.9°C | 7.8°C | 2.6°C | 18.0°C | -3.8°C | 24 mm | 77% | 1.2 m/s | 2.9 |
| 2012 | 16.3°C | 10.5°C | 4.7°C | 21.0°C | -1.9°C | 65 mm | 65% | 1.7 m/s | 2.7 |
| 2011 | 13.4°C | 8.7°C | 3.9°C | 18.6°C | -1.9°C | 34 mm | 82% | 1.5 m/s | 2.4 |
| 2010 | 13.6°C | 9.6°C | 5.7°C | 19.9°C | 1.7°C | 134 mm | 83% | 1.9 m/s | 1.9 |
| 2009 | 15.9°C | 10.2°C | 4.6°C | 23.5°C | -0.4°C | 46 mm | 67% | 1.3 m/s | 2.8 |
| 2008 | 11.7°C | 7.7°C | 3.7°C | 16.1°C | -0.9°C | 174 mm | 82% | 2.4 m/s | 2.1 |
| 2007 | 13.8°C | 7.7°C | 1.6°C | 19.1°C | -4.4°C | 11 mm | 65% | 1.5 m/s | 3.1 |
| 2006 | 13.8°C | 9.3°C | 4.7°C | 17.7°C | 1.2°C | 78 mm | 84% | 1.6 m/s | 2.4 |
| 2005 | 13.0°C | 8.7°C | 4.3°C | 18.9°C | 0.5°C | 93 mm | 85% | 1.6 m/s | 2.1 |
| 2004 | 13.4°C | 9.0°C | 4.6°C | 19.1°C | -1.2°C | 51 mm | 82% | 1.5 m/s | 2.1 |
| 2003 | 16.8°C | 12.1°C | 7.4°C | 19.4°C | 4.2°C | 24 mm | 83% | 1.1 m/s | 2.2 |
| 2002 | 12.4°C | 7.6°C | 2.7°C | 17.4°C | -2.6°C | 45 mm | 81% | 1.4 m/s | 2.6 |
| 2001 | 14.3°C | 8.6°C | 2.9°C | 20.1°C | -2.0°C | 81 mm | 68% | 1.7 m/s | 2.6 |
| 2000 | 15.0°C | 10.5°C | 6.1°C | 19.3°C | 0.8°C | 138 mm | 79% | 1.8 m/s | 2 |
| 1999 | 14.2°C | 9.1°C | 4.0°C | 18.4°C | -0.3°C | 92 mm | 75% | 1.6 m/s | 2.3 |
| 1998 | 14.2°C | 10.2°C | 6.2°C | 19.2°C | 2.2°C | 175 mm | 87% | 2.1 m/s | 2 |
| 1997 | 13.6°C | 9.5°C | 5.3°C | 18.3°C | -4.6°C | 181 mm | 86% | 2.1 m/s | 2.3 |
| 1996 | 14.7°C | 10.1°C | 5.5°C | 20.9°C | 0.7°C | 136 mm | 81% | 1.8 m/s | 2.3 |
| 1995 | 13.6°C | 10.3°C | 7.0°C | 20.6°C | 2.5°C | 256 mm | 87% | 3.5 m/s | 2.2 |
| 1994 | 16.6°C | 10.7°C | 4.8°C | 22.7°C | 0.8°C | 46 mm | 67% | 1.4 m/s | 2.8 |
| 1993 | 12.9°C | 8.3°C | 3.7°C | 18.0°C | -2.6°C | 200 mm | 82% | 2.3 m/s | 2.4 |
| 1992 | 15.6°C | 9.7°C | 3.7°C | 20.9°C | -0.4°C | 72 mm | 72% | 1.5 m/s | 2.5 |
| 1991 | 16.5°C | 10.2°C | 3.9°C | 21.1°C | -0.9°C | 8 mm | 63% | 1.4 m/s | 2.8 |
| 1990 | 15.2°C | 9.7°C | 4.1°C | 20.7°C | -1.0°C | 77 mm | 74% | 1.8 m/s | 2.8 |
| 1989 | 14.3°C | 8.3°C | 2.2°C | 19.9°C | -1.5°C | 23 mm | 72% | 1.4 m/s | 2.9 |
| 1988 | 14.3°C | 9.4°C | 4.6°C | 21.1°C | -1.5°C | 83 mm | 77% | 1.8 m/s | 2.4 |
| 1987 | 14.3°C | 8.5°C | 2.8°C | 20.9°C | -3.2°C | 59 mm | 66% | 1.9 m/s | 2.6 |
| 1986 | 16.9°C | 12.1°C | 7.3°C | 21.0°C | 3.7°C | 83 mm | 76% | 1.9 m/s | 2.3 |
| 1985 | 14.1°C | 8.5°C | 2.8°C | 18.0°C | -2.8°C | 21 mm | 74% | 1.2 m/s | 2.5 |
| 1984 | 14.2°C | 9.2°C | 4.2°C | 20.0°C | -0.6°C | 8 mm | 82% | 1.3 m/s | 2.7 |
| 1983 | 14.2°C | 9.5°C | 4.9°C | 19.6°C | 0.9°C | 163 mm | 80% | 2.1 m/s | — |
| 1982 ❄️ | 11.0°C | 6.2°C | 1.4°C | 17.0°C | -4.0°C | 134 mm | 84% | 1.9 m/s | — |
| 1981 | 16.7°C | 11.5°C | 6.3°C | 22.2°C | -0.1°C | 123 mm | 65% | 1.8 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 14.6°C with lows near 4.7°C (mean 9.7°C), based on 45 years of NASA POWER data.
January averages 90 mm of rainfall in Stockton, a relatively wet time of year. The wettest on record was 264 mm in 2017.
The hottest January reached 25°C in 2021. The coldest dipped to -4.6°C in 1997.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 1.1°C. Daytime highs moved from 14°C to 15°C and overnight lows from 3.9°C to 5.2°C over the same span.
January is one of the cooler months of the year in Stockton and a relatively wet time of year, so plan for around 14.6°C daytime highs and 4.7°C at night.
Not quite — January is the 2nd coolest month in Stockton, averaging 9.7°C.
For January in Stockton, pack warm layers and a jacket for chilly mornings, with typical highs of 14.6°C and lows of 4.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in January averages 77% — quite humid.
Average wind speed in January is 1.7 m/s. The windiest January on record averaged 3.5 m/s (1995).
The wettest January on record was 2017 with 264 mm. On average, January sees 90 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 Stockton 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.
