January is one of the cooler months of the year in Roseville, with average highs near 13.6°C and lows around 4°C (mean 8.8°C). It is a relatively wet time of year, averaging 131 mm of rainfall and 75% relative humidity across the period.
January is one of the cooler months of the year in Roseville. Across 45 years of records, the warmest January in Roseville was 2014 — when the month averaged 12.9°C — while the coldest was 1982 at 5°C. Typical January days reach 13.6°C with nights near 4°C. The long-term trend is warming, about 0.2°C per decade.
January is a relatively wet time of year in Roseville, averaging 131 mm of rainfall. The wettest January on record was 1995 with 459 mm, while the driest was 2015 at 1 mm.
Relative humidity in Roseville during January averages 75%. The most humid January was 1995 at 88%, and the least humid was 2014 at 46%.
January receives about 2.2 kWh/m²/day of solar energy in Roseville. 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 Roseville during January is 1.4 m/s. The windiest January was 1995 at 2.5 m/s, while the calmest was 2015 at 0.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 8.4°C | 8.8°C | 8.3°C | 9.4°C | 9.0°C | +0.6°C |
| Avg High | 13.4°C | 13.5°C | 13.1°C | 14.1°C | 13.7°C | +0.3°C |
| Avg Low | 3.4°C | 4.2°C | 3.5°C | 4.6°C | 4.2°C | +0.8°C |
| Avg Rain | 107 mm | 190 mm | 108 mm | 133 mm | 105 mm | -2 mm |
January temperatures in Roseville have risen by about 0.7°C between 1981–1985 and 2021–2025.
January has ranged from a record low of -6.2°C (1993) to a record high of 25.3°C (2021).
Rainfall in January is a relatively wet time of year, averaging 131 mm, with a wettest year of 459 mm.
A quieter season to visit Roseville
If your dates are flexible, the more temperate months of June and September tend to be the most comfortable for visiting Roseville. That said, January — with days averaging 13.6°C and nights around 4°C (mean 8.8°C) and higher rainfall (131 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 | 14.7°C | 9.0°C | 3.3°C | 18.6°C | 0.7°C | 29 mm | 72% | 1.2 m/s | 2.9 |
| 2024 | 13.5°C | 9.5°C | 5.5°C | 21.7°C | -2.7°C | 161 mm | 80% | 1.5 m/s | 1.9 |
| 2023 | 11.6°C | 7.3°C | 3.1°C | 17.0°C | -3.1°C | 273 mm | 83% | 2 m/s | 2.3 |
| 2022 | 15.0°C | 9.8°C | 4.5°C | 18.0°C | -3.9°C | 9 mm | 73% | 1.1 m/s | 2.8 |
| 2021 | 14.3°C | 9.3°C | 4.3°C | 25.3°C | -2.8°C | 100 mm | 68% | 1.5 m/s | 2.3 |
| 2020 | 12.9°C | 8.8°C | 4.6°C | 18.3°C | 0.5°C | 59 mm | 82% | 1.2 m/s | 2.2 |
| 2019 | 14.3°C | 9.9°C | 5.4°C | 18.7°C | -1.6°C | 193 mm | 79% | 1.6 m/s | 2.2 |
| 2018 | 14.7°C | 10.6°C | 6.5°C | 20.2°C | -0.1°C | 139 mm | 77% | 1.2 m/s | 2 |
| 2017 | 10.0°C | 6.2°C | 2.4°C | 17.3°C | -3.6°C | 369 mm | 85% | 2.1 m/s | 2.1 |
| 2016 | 12.2°C | 8.7°C | 5.1°C | 17.7°C | -0.8°C | 216 mm | 82% | 1.7 m/s | 1.9 |
| 2015 | 16.2°C | 11.0°C | 5.7°C | 20.7°C | -1.9°C | 1 mm | 76% | 0.9 m/s | 2.4 |
| 2014 🔥 | 19.3°C | 12.9°C | 6.4°C | 24.4°C | 2.6°C | 13 mm | 46% | 1.2 m/s | 2.8 |
| 2013 | 12.5°C | 7.2°C | 1.9°C | 17.2°C | -4.2°C | 26 mm | 77% | 1.1 m/s | 2.8 |
| 2012 | 15.6°C | 9.9°C | 4.3°C | 20.9°C | -2.7°C | 118 mm | 58% | 1.4 m/s | 2.6 |
| 2011 | 13.5°C | 8.4°C | 3.3°C | 20.3°C | -3.5°C | 45 mm | 77% | 1.1 m/s | 2 |
| 2010 | 12.4°C | 8.8°C | 5.2°C | 17.6°C | 0.8°C | 211 mm | 79% | 1.7 m/s | 1.6 |
| 2009 | 16.3°C | 10.0°C | 3.7°C | 22.8°C | -2.9°C | 44 mm | 67% | 1.1 m/s | 2.6 |
| 2008 | 10.2°C | 6.4°C | 2.7°C | 16.2°C | -1.0°C | 241 mm | 80% | 1.9 m/s | 1.8 |
| 2007 | 13.7°C | 7.4°C | 1.0°C | 18.9°C | -4.3°C | 12 mm | 61% | 1.2 m/s | 2.9 |
| 2006 | 12.1°C | 8.1°C | 4.1°C | 17.6°C | -0.3°C | 109 mm | 84% | 1.5 m/s | 2.1 |
| 2005 | 12.6°C | 8.4°C | 4.1°C | 18.9°C | -1.6°C | 133 mm | 81% | 1.4 m/s | 1.7 |
| 2004 | 12.2°C | 7.8°C | 3.4°C | 18.1°C | -2.9°C | 76 mm | 79% | 1.2 m/s | 1.8 |
| 2003 | 16.2°C | 11.6°C | 7.1°C | 19.4°C | 2.7°C | 73 mm | 79% | 1.1 m/s | 1.8 |
| 2002 | 11.6°C | 6.6°C | 1.7°C | 17.6°C | -4.9°C | 86 mm | 78% | 1.2 m/s | 2.2 |
| 2001 | 13.4°C | 8.0°C | 2.6°C | 20.3°C | -2.7°C | 113 mm | 65% | 1.4 m/s | 2.5 |
| 2000 | 12.9°C | 8.8°C | 4.7°C | 16.3°C | -1.0°C | 193 mm | 79% | 1.5 m/s | 1.9 |
| 1999 | 14.0°C | 8.9°C | 3.8°C | 19.1°C | -1.4°C | 114 mm | 71% | 1.5 m/s | 2 |
| 1998 | 11.7°C | 8.6°C | 5.4°C | 16.0°C | 0.0°C | 266 mm | 88% | 1.9 m/s | 1.7 |
| 1997 | 12.5°C | 8.3°C | 4.0°C | 17.5°C | -4.6°C | 256 mm | 82% | 1.5 m/s | 1.9 |
| 1996 | 13.2°C | 8.9°C | 4.5°C | 20.6°C | -1.6°C | 176 mm | 80% | 1.5 m/s | 1.9 |
| 1995 🌧️ | 11.5°C | 8.7°C | 6.0°C | 19.9°C | -0.1°C | 459 mm | 88% | 2.5 m/s | 1.8 |
| 1994 | 16.1°C | 10.3°C | 4.5°C | 22.3°C | 0.3°C | 68 mm | 64% | 1.3 m/s | 2.5 |
| 1993 | 11.2°C | 6.9°C | 2.6°C | 19.8°C | -6.2°C | 302 mm | 82% | 1.8 m/s | 2.1 |
| 1992 | 15.1°C | 9.6°C | 4.1°C | 19.2°C | -0.7°C | 92 mm | 65% | 1.3 m/s | 2.1 |
| 1991 | 16.0°C | 9.7°C | 3.3°C | 22.8°C | -0.3°C | 17 mm | 54% | 1.2 m/s | 2.5 |
| 1990 | 13.7°C | 8.5°C | 3.4°C | 20.5°C | -2.0°C | 147 mm | 73% | 1.5 m/s | 2.4 |
| 1989 | 13.4°C | 7.4°C | 1.4°C | 21.1°C | -3.0°C | 36 mm | 72% | 1.3 m/s | 2.7 |
| 1988 | 12.4°C | 8.0°C | 3.6°C | 22.7°C | -4.2°C | 145 mm | 80% | 1.5 m/s | 2.2 |
| 1987 | 12.8°C | 7.4°C | 1.9°C | 20.4°C | -4.4°C | 81 mm | 63% | 1.4 m/s | 2.3 |
| 1986 | 15.6°C | 11.4°C | 7.3°C | 22.3°C | 2.4°C | 155 mm | 76% | 1.6 m/s | 1.9 |
| 1985 | 13.9°C | 8.1°C | 2.3°C | 18.7°C | -2.9°C | 28 mm | 71% | 1.1 m/s | 2.1 |
| 1984 | 14.6°C | 9.0°C | 3.5°C | 20.3°C | -2.0°C | 13 mm | 78% | 1.1 m/s | 2.4 |
| 1983 | 13.6°C | 9.1°C | 4.6°C | 22.6°C | -0.7°C | 191 mm | 77% | 1.7 m/s | — |
| 1982 ❄️ | 9.4°C | 5.0°C | 0.6°C | 15.5°C | -6.0°C | 155 mm | 83% | 1.6 m/s | — |
| 1981 | 15.3°C | 10.4°C | 5.6°C | 22.2°C | -3.4°C | 161 mm | 66% | 1.5 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 13.6°C with lows near 4°C (mean 8.8°C), based on 45 years of NASA POWER data.
January averages 131 mm of rainfall in Roseville, a relatively wet time of year. The wettest on record was 459 mm in 1995.
The hottest January reached 25.3°C in 2021. The coldest dipped to -6.2°C in 1993.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 0.7°C. Daytime highs moved from 13.4°C to 13.8°C and overnight lows from 3.3°C to 4.1°C over the same span.
January is one of the cooler months of the year in Roseville and a relatively wet time of year, so plan for around 13.6°C daytime highs and 4°C at night.
Not quite — January is the 2nd coolest month in Roseville, averaging 8.8°C.
For January in Roseville, pack warm layers and a jacket for chilly mornings, with typical highs of 13.6°C and lows of 4°C. Bring an umbrella or light rain jacket too.
Relative humidity in January averages 75% — moderately humid.
Average wind speed in January is 1.4 m/s. The windiest January on record averaged 2.5 m/s (1995).
The wettest January on record was 1995 with 459 mm. On average, January sees 131 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 Roseville 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.
