Climate averages 1991–2020
Yuma weather
in August.
A very hot, very dry month: the 2nd warmest and the joint 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a very hot month in Yuma: daytime highs average 41.5°C and nights cool to about 28.2°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 11 mm of rain on roughly 3 days, which makes August a very dry month (the joint 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 21 min on an average August day.
The nearest other city in this atlas is San Luis Río Colorado (33 km away). In August its highs average 40.8°C, 0.7°C cooler than Yuma, with 11 mm of rain.
Among the 498 cities listed in the United States, Yuma ranks 1st of 498 for the warmest August highs and joint 116th of 498 for the driest August (rainfall, lowest first). The mean August high of those 498 cities is 29.9°C; Yuma is 11.6°C warmer than that mean.
From August to September, average highs fall by 2.9°C to 38.6°C, and monthly rainfall rises from 11 mm to 12 mm.
The annual picture
August 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, selected | 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 | 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
August in nearby cities
- San Luis Río Colorado in AugustMexico · 33 kmHigh 40.8°C · Low 28.0°C · 11 mm rain
- Mexicali in AugustMexico · 78 kmHigh 41.6°C · Low 27.9°C · 8.7 mm rain
- Indio in AugustUnited States · 185 kmHigh 41.0°C · Low 27.8°C · 8.6 mm rain
- Ensenada in AugustMexico · 209 kmHigh 28.4°C · Low 20.8°C · 1.8 mm rain
- El Cajon in AugustUnited States · 219 kmHigh 28.3°C · Low 18.7°C · 1.8 mm rain
- Tijuana in AugustMexico · 224 kmHigh 24.8°C · Low 18.6°C · 1.2 mm rain
- Goodyear in AugustUnited States · 225 kmHigh 40.2°C · Low 28.1°C · 27 mm rain
- Avondale in AugustUnited States · 226 kmHigh 40.2°C · Low 28.0°C · 27 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.