Climate averages 1991–2020
Yuma weather
in December.
A mild, very dry month: the coolest and the 8th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
December is a mild month in Yuma: daytime highs average 20.0°C and nights cool to about 8.1°C. By daytime temperature it is the coolest month of the year.
Expect about 10 mm of rain on roughly 2 days, which makes December a very dry month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 02 min on an average December day.
The nearest other city in this atlas is San Luis Río Colorado (33 km away). In December its highs average 19.9°C, about as warm as Yuma, with 9.2 mm of rain.
Among the 498 cities listed in the United States, Yuma ranks joint 37th of 498 for the warmest December highs and 1st of 498 for the driest December (rainfall, lowest first). The mean December high of those 498 cities is 10.5°C; Yuma is 9.5°C warmer than that mean.
From December to January, average highs rise by 1.2°C to 21.2°C, and monthly rainfall rises from 10 mm to 11 mm.
The annual picture
December in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Yuma climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 21.2°C8.6°C | 8.6°C | 11 | 1.8 | 10.310 h |
| February | 23.1°C9.9°C | 9.9°C | 15 | 2.3 | 11.011 h |
| March | 27.1°C12.6°C | 12.6°C | 9.0 | 1.4 | 12.012 h |
| April | 30.7°C15.4°C | 15.4°C | 3.0 | 0.5 | 13.013 h |
| May | 34.9°C19.1°C | 19.1°C | 0.7 | 0.2 | 13.814 h |
| June | 39.9°C23.4°C | 23.4°C | 0.7 | 0.2 | 14.314 h |
| July | 41.9°C27.7°C | 27.7°C | 5.6 | 1.6 | 14.114 h |
| August | 41.5°C28.2°C | 28.2°C | 11 | 3.2 | 13.413 h |
| September | 38.6°C24.8°C | 24.8°C | 12 | 2.0 | 12.412 h |
| October | 32.4°C18.2°C | 18.2°C | 4.8 | 0.7 | 11.411 h |
| November | 25.5°C12.4°C | 12.4°C | 7.0 | 1.0 | 10.511 h |
| December, selected | 20.0°C8.1°C | 8.1°C | 10 | 1.6 | 10.010 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- San Luis Río Colorado in DecemberMexico · 33 kmHigh 19.9°C · Low 8.1°C · 9.2 mm rain
- Mexicali in DecemberMexico · 78 kmHigh 19.8°C · Low 9.3°C · 9.1 mm rain
- Indio in DecemberUnited States · 185 kmHigh 18.9°C · Low 9.1°C · 25 mm rain
- Ensenada in DecemberMexico · 209 kmHigh 18.5°C · Low 9.1°C · 45 mm rain
- El Cajon in DecemberUnited States · 219 kmHigh 17.7°C · Low 7.9°C · 47 mm rain
- Tijuana in DecemberMexico · 224 kmHigh 16.8°C · Low 9.0°C · 51 mm rain
- Goodyear in DecemberUnited States · 225 kmHigh 18.2°C · Low 5.0°C · 25 mm rain
- Avondale in DecemberUnited States · 226 kmHigh 18.2°C · Low 4.9°C · 25 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Yuma) is explained once on the Yuma year overview and on the Sources, method and limits page.