January is one of the cooler months of the year in Apache Junction, with average highs near 16.4°C and lows around 2.9°C (mean 9.6°C). It is a relatively wet time of year, averaging 45 mm of rainfall and 51% relative humidity across the period.
January is one of the cooler months of the year in Apache Junction. Across 45 years of records, the warmest January in Apache Junction was 2003 — when the month averaged 13.9°C — while the coldest was 1992 at 7°C. Typical January days reach 16.4°C with nights near 2.9°C. The long-term trend is warming, about 0.2°C per decade.
January is a relatively wet time of year in Apache Junction, averaging 45 mm of rainfall. The wettest January on record was 1993 with 228 mm, while the driest was 2014 at 0 mm.
Relative humidity in Apache Junction during January averages 51%. The most humid January was 1993 at 76%, and the least humid was 2006 at 28%.
January receives about 3.4 kWh/m²/day of solar energy in Apache Junction. The sunniest Januarys were 2006 and 2011 at 3.8 kWh/m²/day, and the cloudiest was 1993 at 2.8.
Average wind speed in Apache Junction during January is 2.2 m/s. The windiest January was 1992 at 3.1 m/s, while the calmest were 1998 and 2024 at 1.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 9.3°C | 9.1°C | 10.1°C | 10.2°C | 9.7°C | +0.4°C |
| Avg High | 16.0°C | 15.8°C | 16.9°C | 17.1°C | 16.5°C | +0.5°C |
| Avg Low | 2.5°C | 2.4°C | 3.3°C | 3.4°C | 2.8°C | +0.3°C |
| Avg Rain | 45 mm | 64 mm | 34 mm | 46 mm | 28 mm | -16 mm |
January temperatures in Apache Junction have stayed relatively stable across the record.
January has ranged from a record low of -9.1°C (2011) to a record high of 27.3°C (2003).
Rainfall in January is a relatively wet time of year, averaging 45 mm, with a wettest year of 228 mm.
A quieter season to visit Apache Junction
If your dates are flexible, the more temperate months of May and October tend to be the most comfortable for visiting Apache Junction. That said, January — with days averaging 16.4°C and nights around 2.9°C (mean 9.6°C) and moderate rainfall (45 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 | 16.5°C | 9.3°C | 2.1°C | 25.6°C | -3.3°C | 3 mm | 28% | 2.3 m/s | 3.7 |
| 2024 | 15.3°C | 9.2°C | 3.0°C | 24.2°C | -3.8°C | 32 mm | 54% | 1.7 m/s | 3.1 |
| 2023 | 14.1°C | 8.1°C | 2.2°C | 21.3°C | -2.9°C | 80 mm | 60% | 2 m/s | 3.2 |
| 2022 | 18.0°C | 10.6°C | 3.1°C | 21.8°C | -3.7°C | 9 mm | 47% | 2.2 m/s | 3.7 |
| 2021 | 17.7°C | 10.4°C | 3.1°C | 24.6°C | -3.5°C | 38 mm | 41% | 2.4 m/s | 3.4 |
| 2020 | 17.3°C | 10.3°C | 3.3°C | 21.8°C | -1.7°C | 9 mm | 52% | 1.9 m/s | 3.5 |
| 2019 | 16.9°C | 9.9°C | 2.9°C | 22.4°C | -5.6°C | 28 mm | 55% | 2 m/s | 3.3 |
| 2018 | 20.3°C | 13.0°C | 5.8°C | 24.9°C | -1.7°C | 14 mm | 34% | 2.4 m/s | 3.6 |
| 2017 | 14.5°C | 9.1°C | 3.6°C | 22.6°C | -3.3°C | 74 mm | 62% | 2 m/s | 2.9 |
| 2016 | 15.8°C | 9.1°C | 2.5°C | 22.2°C | -2.6°C | 65 mm | 54% | 2.3 m/s | 3.4 |
| 2015 | 17.6°C | 11.0°C | 4.4°C | 24.6°C | -4.2°C | 48 mm | 55% | 2.2 m/s | 3.1 |
| 2014 | 19.7°C | 12.1°C | 4.5°C | 23.2°C | 0.1°C | 0 mm | 38% | 2.2 m/s | 3.7 |
| 2013 | 14.8°C | 8.0°C | 1.3°C | 23.9°C | -6.1°C | 59 mm | 49% | 2.3 m/s | 3.5 |
| 2012 | 18.7°C | 11.2°C | 3.7°C | 23.3°C | -1.0°C | 8 mm | 42% | 2.2 m/s | 3.5 |
| 2011 | 16.9°C | 9.4°C | 1.8°C | 23.0°C | -9.1°C | 2 mm | 45% | 2.3 m/s | 3.8 |
| 2010 | 15.5°C | 9.4°C | 3.2°C | 20.0°C | -4.1°C | 161 mm | 55% | 2.4 m/s | 3.1 |
| 2009 | 17.8°C | 10.7°C | 3.6°C | 23.8°C | -2.6°C | 21 mm | 53% | 2.3 m/s | 3.6 |
| 2008 | 13.7°C | 7.6°C | 1.5°C | 18.6°C | -4.0°C | 95 mm | 57% | 2.4 m/s | 3.3 |
| 2007 | 14.0°C | 7.5°C | 0.9°C | 21.7°C | -7.1°C | 30 mm | 52% | 2.4 m/s | 3.2 |
| 2006 | 18.6°C | 11.1°C | 3.6°C | 24.0°C | -3.0°C | 2 mm | 28% | 2.3 m/s | 3.8 |
| 2005 | 16.6°C | 10.6°C | 4.6°C | 23.8°C | -2.5°C | 94 mm | 63% | 2 m/s | 3 |
| 2004 | 16.4°C | 10.1°C | 3.8°C | 23.2°C | -3.4°C | 27 mm | 53% | 2 m/s | 3.1 |
| 2003 🔥 | 21.8°C | 13.9°C | 6.1°C | 27.3°C | -0.7°C | 7 mm | 45% | 2.2 m/s | 3.7 |
| 2002 | 16.6°C | 9.4°C | 2.3°C | 24.1°C | -4.8°C | 4 mm | 42% | 2.1 m/s | 3.3 |
| 2001 | 14.2°C | 8.0°C | 1.8°C | 22.7°C | -4.1°C | 55 mm | 59% | 2.1 m/s | 3.2 |
| 2000 | 19.0°C | 11.8°C | 4.5°C | 26.2°C | -4.0°C | 5 mm | 33% | 2 m/s | 3.5 |
| 1999 | 18.7°C | 11.0°C | 3.3°C | 22.7°C | -1.8°C | 3 mm | 38% | 2.2 m/s | 3.6 |
| 1998 | 16.7°C | 9.9°C | 3.0°C | 22.0°C | -2.7°C | 16 mm | 55% | 1.7 m/s | 3.4 |
| 1997 | 14.8°C | 8.8°C | 2.7°C | 23.0°C | -4.2°C | 69 mm | 62% | 2.1 m/s | 3.1 |
| 1996 | 17.9°C | 10.3°C | 2.8°C | 24.9°C | -2.1°C | 11 mm | 35% | 2.2 m/s | 3.4 |
| 1995 | 13.5°C | 7.7°C | 2.0°C | 21.5°C | -3.9°C | 109 mm | 68% | 2.1 m/s | 3 |
| 1994 | 17.6°C | 9.9°C | 2.2°C | 23.8°C | -2.6°C | 6 mm | 44% | 2.2 m/s | 3.6 |
| 1993 🌧️ | 14.1°C | 9.1°C | 4.1°C | 20.2°C | -3.0°C | 228 mm | 76% | 2.5 m/s | 2.8 |
| 1992 ❄️ | 13.5°C | 7.0°C | 0.5°C | 21.0°C | -4.9°C | 122 mm | 66% | 3.1 m/s | 3.5 |
| 1991 | 15.0°C | 8.4°C | 1.7°C | 19.6°C | -4.7°C | 40 mm | 59% | 2 m/s | 3.4 |
| 1990 | 15.7°C | 8.6°C | 1.4°C | 24.3°C | -3.4°C | 31 mm | 50% | 2.4 m/s | 3.6 |
| 1989 | 15.3°C | 8.6°C | 1.8°C | 21.7°C | -4.0°C | 60 mm | 52% | 2.4 m/s | 3.3 |
| 1988 | 14.7°C | 8.0°C | 1.3°C | 21.4°C | -7.1°C | 59 mm | 57% | 2.6 m/s | 3.2 |
| 1987 | 14.8°C | 8.0°C | 1.2°C | 23.8°C | -6.5°C | 49 mm | 54% | 2.2 m/s | 3.4 |
| 1986 | 20.0°C | 12.5°C | 5.1°C | 24.3°C | -0.3°C | 8 mm | 50% | 2.5 m/s | 3.5 |
| 1985 | 13.6°C | 7.5°C | 1.4°C | 19.0°C | -5.1°C | 56 mm | 67% | 2.2 m/s | 3.2 |
| 1984 | 16.2°C | 9.4°C | 2.5°C | 22.7°C | -3.9°C | 17 mm | 57% | 2.7 m/s | 3.5 |
| 1983 | 16.6°C | 9.7°C | 2.9°C | 23.2°C | -2.9°C | 53 mm | 58% | 2.6 m/s | — |
| 1982 | 14.9°C | 8.5°C | 2.0°C | 25.4°C | -3.8°C | 66 mm | 59% | 2.2 m/s | — |
| 1981 | 17.8°C | 11.2°C | 4.5°C | 23.8°C | -0.4°C | 34 mm | 47% | 2.4 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 16.4°C with lows near 2.9°C (mean 9.6°C), based on 45 years of NASA POWER data.
January averages 45 mm of rainfall in Apache Junction, a relatively wet time of year. The wettest on record was 228 mm in 1993.
The hottest January reached 27.3°C in 2003. The coldest dipped to -9.1°C in 2011.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 0.2°C. Daytime highs moved from 15.8°C to 16.3°C and overnight lows from 2.7°C to 2.7°C over the same span.
January is one of the cooler months of the year in Apache Junction and a relatively wet time of year, so plan for around 16.4°C daytime highs and 2.9°C at night.
Yes — January is the coldest month of the year in Apache Junction, averaging 9.6°C.
For January in Apache Junction, pack warm layers and a jacket for chilly mornings, with typical highs of 16.4°C and lows of 2.9°C.
Relative humidity in January averages 51% — relatively dry.
Average wind speed in January is 2.2 m/s. The windiest January on record averaged 3.1 m/s (1992).
The wettest January on record was 1993 with 228 mm. On average, January sees 45 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 Apache Junction 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.
