Phoenix weather in December
December in Phoenix: nice, a little rain — a great time to visit.
#7 of 12 months in Phoenix · #376 of 897 destinations to visit in December · comfort 76/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Phoenix in December
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Phoenix climate normals — December
| Daytime high | 19°C / 66°F | 😎 nice |
|---|---|---|
| Nighttime low | 6°C / 43°F | |
| Rainfall | 36 mm / 1.4 in | 🌦 some rain |
| Rainy days | 4 days | |
| Humidity | 58% | 🍃 comfortable |
| Dew point | 3°C / 37°F | |
| Sunshine | 8 h/day | |
| Daylight | 10 h | |
| Wind | 12 km/h / 7 mph | |
| Air quality (US AQI) | 54 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Phoenix in December — FAQ
- Is December a good time to visit Phoenix?
- December in Phoenix: nice, a little rain — a great time to visit. It ranks #7 of 12 months for Phoenix on SeasonMap's comfort score (76/100).
- What is the weather like in Phoenix in December?
- In December, Phoenix averages a daily high of 19.1°C and a low of 6°C, with about 35.7 mm of rain over roughly 4.4 rainy days.
- What is the air quality in Phoenix in December?
- Phoenix has a mean US Air Quality Index of about 54 in December.