Tucson weather in May
May in Tucson: hot, dry — an excellent time to visit.
#5 of 12 months in Tucson · #250 of 604 destinations to visit in May · comfort 84/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Tucson climate normals — May
| Daytime high | 33°C / 92°F | 🥵 hot |
|---|---|---|
| Nighttime low | 18°C / 64°F | |
| Feels like (high) | 30°C / 86°F | |
| Rainfall | 3 mm / 0.1 in | ☀️ dry |
| Rainy days | 1 days | |
| Humidity | 19% | 🌵 dry |
| Dew point | -2°C / 28°F | |
| Sunshine | 12.7 h/day | |
| Daylight | 13.8 h | |
| Wind | 21 km/h / 13 mph | |
| Air quality (US AQI) | 52 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Tucson in May — FAQ
- Is May a good time to visit Tucson?
- May in Tucson: hot, dry — an excellent time to visit. It ranks #5 of 12 months for Tucson on SeasonMap's comfort score (84/100).
- What is the weather like in Tucson in May?
- In May, Tucson averages a daily high of 33.3°C and a low of 17.6°C, with about 3.4 mm of rain over roughly 0.8 rainy days.
- What is the air quality in Tucson in May?
- Tucson has a mean US Air Quality Index of about 52 in May.