January is one of the cooler months of the year in Sacramento, with average highs near 14.4°C and lows around 4.9°C (mean 9.7°C). It is a relatively wet time of year, averaging 109 mm of rainfall and 74% relative humidity across the period.
January is one of the cooler months of the year in Sacramento. Across 45 years of records, the warmest January in Sacramento was 2014 — when the month averaged 13.1°C — while the coldest was 1982 at 6.1°C. Typical January days reach 14.4°C with nights near 4.9°C. The long-term January temperature trend is broadly flat.
January is a relatively wet time of year in Sacramento, averaging 109 mm of rainfall. The wettest January on record was 2017 with 331 mm, while the driest was 2015 at 0 mm.
Relative humidity in Sacramento during January averages 74%. The most humid January was 1998 at 86%, and the least humid was 2014 at 49%.
January receives about 2.2 kWh/m²/day of solar energy in Sacramento. The sunniest Januarys were 2007 and 2025 at 2.9 kWh/m²/day, and the cloudiest was 2010 at 1.6.
Average wind speed in Sacramento during January is 1.8 m/s. The windiest January was 1995 at 3.6 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 | 9.4°C | 9.8°C | 9.2°C | 10.1°C | 9.9°C | +0.5°C |
| Avg High | 14.3°C | 14.4°C | 14.0°C | 14.7°C | 14.6°C | +0.3°C |
| Avg Low | 4.4°C | 5.1°C | 4.5°C | 5.5°C | 5.2°C | +0.8°C |
| Avg Rain | 93 mm | 155 mm | 88 mm | 110 mm | 92 mm | -1 mm |
January temperatures in Sacramento have risen by about 0.9°C between 1981–1985 and 2021–2025.
January has ranged from a record low of -4.2°C (1997) to a record high of 25.1°C (2009).
Rainfall in January is a relatively wet time of year, averaging 109 mm, with a wettest year of 331 mm.
A quieter season to visit Sacramento
If your dates are flexible, the more temperate months of June and September tend to be the most comfortable for visiting Sacramento. That said, January — with days averaging 14.4°C and nights around 4.9°C (mean 9.7°C) and higher rainfall (109 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 | 15.5°C | 9.9°C | 4.2°C | 20.6°C | 0.7°C | 23 mm | 72% | 1.4 m/s | 2.9 |
| 2024 | 14.8°C | 10.8°C | 6.7°C | 22.3°C | -0.9°C | 130 mm | 80% | 1.9 m/s | 1.9 |
| 2023 | 12.5°C | 8.4°C | 4.2°C | 17.5°C | -1.7°C | 238 mm | 83% | 2.9 m/s | 2.3 |
| 2022 | 15.5°C | 10.5°C | 5.5°C | 19.8°C | -1.8°C | 5 mm | 75% | 1.3 m/s | 2.8 |
| 2021 | 15.2°C | 10.2°C | 5.2°C | 24.8°C | -1.6°C | 110 mm | 69% | 1.9 m/s | 2.3 |
| 2020 | 14.0°C | 9.7°C | 5.5°C | 18.1°C | 2.0°C | 46 mm | 83% | 1.4 m/s | 2.2 |
| 2019 | 15.3°C | 10.9°C | 6.4°C | 18.8°C | -1.6°C | 146 mm | 77% | 2.1 m/s | 2.2 |
| 2018 | 15.5°C | 11.3°C | 7.1°C | 20.6°C | 0.5°C | 127 mm | 79% | 1.3 m/s | 2 |
| 2017 🌧️ | 11.0°C | 7.4°C | 3.8°C | 16.2°C | -1.6°C | 331 mm | 85% | 2.6 m/s | 2.1 |
| 2016 | 13.6°C | 9.8°C | 6.1°C | 18.0°C | 0.1°C | 178 mm | 81% | 2.1 m/s | 1.9 |
| 2015 | 16.1°C | 11.3°C | 6.4°C | 21.4°C | -1.5°C | 0 mm | 77% | 1 m/s | 2.4 |
| 2014 🔥 | 19.1°C | 13.1°C | 7.2°C | 23.6°C | 4.6°C | 11 mm | 49% | 1.3 m/s | 2.8 |
| 2013 | 13.1°C | 8.1°C | 3.1°C | 18.2°C | -3.4°C | 24 mm | 74% | 1.3 m/s | 2.8 |
| 2012 | 16.2°C | 10.6°C | 5.0°C | 21.1°C | -2.3°C | 86 mm | 60% | 1.7 m/s | 2.6 |
| 2011 | 13.6°C | 9.0°C | 4.3°C | 20.8°C | -2.2°C | 40 mm | 77% | 1.4 m/s | 2 |
| 2010 | 13.3°C | 9.7°C | 6.0°C | 19.0°C | 2.4°C | 151 mm | 78% | 2.1 m/s | 1.6 |
| 2009 | 16.6°C | 10.8°C | 5.0°C | 25.1°C | -1.5°C | 51 mm | 65% | 1.5 m/s | 2.6 |
| 2008 | 11.4°C | 7.6°C | 3.7°C | 15.8°C | -0.5°C | 194 mm | 79% | 2.6 m/s | 1.8 |
| 2007 | 14.1°C | 8.0°C | 2.0°C | 19.4°C | -4.2°C | 10 mm | 61% | 1.6 m/s | 2.9 |
| 2006 | 13.3°C | 9.1°C | 4.8°C | 18.8°C | 0.4°C | 89 mm | 82% | 1.9 m/s | 2.1 |
| 2005 | 13.3°C | 9.2°C | 5.1°C | 18.5°C | 0.8°C | 105 mm | 80% | 1.8 m/s | 1.7 |
| 2004 | 13.2°C | 8.9°C | 4.7°C | 19.1°C | -1.4°C | 61 mm | 78% | 1.6 m/s | 1.8 |
| 2003 | 16.8°C | 12.4°C | 8.1°C | 20.4°C | 4.1°C | 35 mm | 78% | 1.3 m/s | 1.8 |
| 2002 | 12.4°C | 7.6°C | 2.7°C | 16.5°C | -3.4°C | 60 mm | 77% | 1.5 m/s | 2.2 |
| 2001 | 14.3°C | 8.8°C | 3.3°C | 19.5°C | -2.9°C | 94 mm | 64% | 1.9 m/s | 2.5 |
| 2000 | 14.4°C | 10.0°C | 5.6°C | 18.4°C | 0.0°C | 185 mm | 77% | 1.9 m/s | 1.9 |
| 1999 | 14.4°C | 9.4°C | 4.5°C | 19.3°C | -0.5°C | 108 mm | 72% | 1.8 m/s | 2 |
| 1998 | 13.5°C | 9.9°C | 6.3°C | 18.2°C | 1.8°C | 216 mm | 86% | 2.5 m/s | 1.7 |
| 1997 | 13.3°C | 9.2°C | 5.2°C | 18.1°C | -4.2°C | 235 mm | 83% | 2.1 m/s | 1.9 |
| 1996 | 14.2°C | 9.8°C | 5.4°C | 20.5°C | 0.3°C | 147 mm | 79% | 1.9 m/s | 1.9 |
| 1995 | 13.0°C | 10.1°C | 7.1°C | 21.1°C | 2.6°C | 330 mm | 85% | 3.6 m/s | 1.8 |
| 1994 | 16.4°C | 11.0°C | 5.5°C | 21.2°C | 1.0°C | 57 mm | 62% | 1.6 m/s | 2.5 |
| 1993 | 12.6°C | 8.3°C | 4.0°C | 19.2°C | -2.8°C | 242 mm | 79% | 2.5 m/s | 2.1 |
| 1992 | 15.6°C | 10.2°C | 4.7°C | 20.0°C | 0.2°C | 84 mm | 66% | 1.5 m/s | 2.1 |
| 1991 | 16.5°C | 10.3°C | 4.1°C | 21.9°C | 0.4°C | 12 mm | 57% | 1.5 m/s | 2.5 |
| 1990 | 14.8°C | 9.6°C | 4.4°C | 21.4°C | -1.2°C | 114 mm | 72% | 1.9 m/s | 2.4 |
| 1989 | 14.3°C | 8.4°C | 2.5°C | 20.8°C | -1.7°C | 30 mm | 70% | 1.6 m/s | 2.7 |
| 1988 | 13.8°C | 9.4°C | 4.9°C | 20.9°C | -2.7°C | 104 mm | 76% | 1.9 m/s | 2.2 |
| 1987 | 14.0°C | 8.5°C | 3.0°C | 21.1°C | -2.9°C | 74 mm | 61% | 1.9 m/s | 2.3 |
| 1986 | 16.3°C | 12.2°C | 8.0°C | 20.7°C | 2.9°C | 116 mm | 75% | 2 m/s | 1.9 |
| 1985 | 14.2°C | 8.7°C | 3.2°C | 18.2°C | -2.7°C | 25 mm | 71% | 1.3 m/s | 2.1 |
| 1984 | 14.8°C | 9.6°C | 4.5°C | 20.0°C | -1.2°C | 10 mm | 78% | 1.4 m/s | 2.4 |
| 1983 | 14.2°C | 9.8°C | 5.3°C | 19.9°C | -0.3°C | 177 mm | 77% | 2.2 m/s | — |
| 1982 ❄️ | 10.8°C | 6.1°C | 1.4°C | 16.3°C | -3.9°C | 156 mm | 82% | 2 m/s | — |
| 1981 | 16.3°C | 11.5°C | 6.7°C | 22.6°C | -0.3°C | 147 mm | 63% | 2 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 14.4°C with lows near 4.9°C (mean 9.7°C), based on 45 years of NASA POWER data.
January averages 109 mm of rainfall in Sacramento, a relatively wet time of year. The wettest on record was 331 mm in 2017.
The hottest January reached 25.1°C in 2009. The coldest dipped to -4.2°C in 1997.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 0.9°C. Daytime highs moved from 14.1°C to 14.7°C and overnight lows from 4.2°C to 5.2°C over the same span.
January is one of the cooler months of the year in Sacramento and a relatively wet time of year, so plan for around 14.4°C daytime highs and 4.9°C at night.
Not quite — January is the 2nd coolest month in Sacramento, averaging 9.7°C.
For January in Sacramento, pack warm layers and a jacket for chilly mornings, with typical highs of 14.4°C and lows of 4.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in January averages 74% — moderately humid.
Average wind speed in January is 1.8 m/s. The windiest January on record averaged 3.6 m/s (1995).
The wettest January on record was 2017 with 331 mm. On average, January sees 109 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 Sacramento 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.
