Climate averages 1991–2020
San Luis Río Colorado weather
in July.
A very hot, very dry month: the warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a very hot month in San Luis Río Colorado: daytime highs average 41.2°C and nights cool to about 27.4°C. By daytime temperature it is the warmest month of the year.
Expect about 4.8 mm of rain on roughly 2 days, which makes July a very dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 04 min on an average July day.
The nearest other city in this atlas is Yuma (33 km away). In July its highs average 41.9°C, 0.7°C warmer than San Luis Río Colorado, with 5.6 mm of rain.
Among the 153 cities listed in Mexico, San Luis Río Colorado ranks 2nd of 153 for the warmest July highs and 4th of 153 for the driest July (rainfall, lowest first). The mean July high of those 153 cities is 28.0°C; San Luis Río Colorado is 13.2°C warmer than that mean.
From July to August, average highs fall by 0.4°C to 40.8°C, and monthly rainfall rises from 4.8 mm to 11 mm.
The annual picture
July 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
San Luis Río Colorado climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 21.0°C8.6°C | 8.6°C | 9.2 | 1.5 | 10.310 h |
| February | 22.9°C9.9°C | 9.9°C | 13 | 2.3 | 11.011 h |
| March | 26.7°C12.5°C | 12.5°C | 10 | 1.5 | 12.012 h |
| April | 30.3°C15.3°C | 15.3°C | 3.0 | 0.6 | 13.013 h |
| May | 34.5°C18.9°C | 18.9°C | 0.7 | 0.2 | 13.814 h |
| June | 39.3°C23.1°C | 23.1°C | 0.6 | 0.2 | 14.214 h |
| July, selected | 41.2°C27.4°C | 27.4°C | 4.8 | 1.5 | 14.114 h |
| August | 40.8°C28.0°C | 28.0°C | 11 | 2.9 | 13.313 h |
| September | 37.9°C24.8°C | 24.8°C | 13 | 2.2 | 12.412 h |
| October | 32.0°C18.5°C | 18.5°C | 4.9 | 0.9 | 11.411 h |
| November | 25.2°C12.5°C | 12.5°C | 5.5 | 0.8 | 10.511 h |
| December | 19.9°C8.1°C | 8.1°C | 9.2 | 1.7 | 10.110 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
July in nearby cities
- Yuma in JulyUnited States · 33 kmHigh 41.9°C · Low 27.7°C · 5.6 mm rain
- Mexicali in JulyMexico · 67 kmHigh 42.1°C · Low 27.5°C · 5.4 mm rain
- Ensenada in JulyMexico · 184 kmHigh 27.2°C · Low 19.8°C · 1.1 mm rain
- Indio in JulyUnited States · 195 kmHigh 41.5°C · Low 27.2°C · 7.2 mm rain
- El Cajon in JulyUnited States · 209 kmHigh 27.2°C · Low 17.7°C · 2.6 mm rain
- Tijuana in JulyMexico · 210 kmHigh 23.8°C · Low 17.7°C · 2.0 mm rain
- Rosarito in JulyMexico · 214 kmHigh 23.9°C · Low 18.3°C · 1.1 mm rain
- Chula Vista in JulyUnited States · 218 kmHigh 23.5°C · Low 17.2°C · 2.6 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 San Luis Río Colorado) is explained once on the San Luis Río Colorado year overview and on the Sources, method and limits page.