Tucson weather in January
January in Tucson: cool, dry, with clean air — a great time to visit.
#8 of 12 months in Tucson · #216 of 604 destinations to visit in January · comfort 77/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Tucson climate normals — January
| Daytime high | 18°C / 64°F | 🙂 cool |
|---|---|---|
| Nighttime low | 4°C / 39°F | |
| Feels like (high) | 15°C / 59°F | |
| Rainfall | 27 mm / 1 in | ☀️ dry |
| Rainy days | 3 days | |
| Humidity | 54% | 🍃 comfortable |
| Dew point | 0°C / 32°F | |
| Sunshine | 8.7 h/day | |
| Daylight | 10.3 h | |
| Wind | 15 km/h / 9 mph | |
| Snowfall | 0.7 cm / 0.3 in | |
| Air quality (US AQI) | 31 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Tucson in January — FAQ
- Is January a good time to visit Tucson?
- January in Tucson: cool, dry, with clean air — a great time to visit. It ranks #8 of 12 months for Tucson on SeasonMap's comfort score (77/100).
- What is the weather like in Tucson in January?
- In January, Tucson averages a daily high of 18°C and a low of 3.9°C, with about 26.6 mm of rain over roughly 3.2 rainy days.
- What is the air quality in Tucson in January?
- Tucson has a mean US Air Quality Index of about 31 in January.