Climate averages 1991–2020
Monterrey weather
in July.
A hot, moderately wet month: the 2nd warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a hot month in Monterrey: daytime highs average 32.3°C and nights cool to about 22.3°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 41 mm of rain on roughly 5 days, which makes July a moderately wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 34 min on an average July day.
The nearest other city in this atlas is San Pedro Garza García (9 km away). In July its highs average 31.5°C, 0.8°C cooler than Monterrey, with 50 mm of rain.
Among the 153 cities listed in Mexico, Monterrey ranks joint 37th of 153 for the warmest July highs and joint 12th of 153 for the driest July (rainfall, lowest first). The mean July high of those 153 cities is 28.0°C; Monterrey is 4.4°C warmer than that mean.
From July to August, average highs rise by 0.2°C to 32.6°C, and monthly rainfall falls from 41 mm to 31 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
Monterrey climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 19.3°C9.5°C | 9.5°C | 37 | 6.3 | 10.711 h |
| February | 21.9°C11.4°C | 11.4°C | 33 | 5.8 | 11.311 h |
| March | 25.0°C14.0°C | 14.0°C | 46 | 7.1 | 12.012 h |
| April | 28.1°C17.1°C | 17.1°C | 46 | 6.7 | 12.713 h |
| May | 30.3°C20.0°C | 20.0°C | 52 | 7.7 | 13.413 h |
| June | 32.0°C21.8°C | 21.8°C | 39 | 5.4 | 13.714 h |
| July, selected | 32.3°C22.3°C | 22.3°C | 41 | 4.6 | 13.614 h |
| August | 32.6°C22.6°C | 22.6°C | 31 | 4.5 | 13.013 h |
| September | 28.7°C20.6°C | 20.6°C | 117 | 10.4 | 12.312 h |
| October | 26.2°C17.5°C | 17.5°C | 59 | 7.2 | 11.612 h |
| November | 22.3°C13.4°C | 13.4°C | 38 | 6.3 | 10.911 h |
| December | 19.7°C10.4°C | 10.4°C | 32 | 5.7 | 10.611 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
- San Pedro Garza García in JulyMexico · 9 kmHigh 31.5°C · Low 22.1°C · 50 mm rain
- Ciudad General Escobedo in JulyMexico · 12 kmHigh 32.5°C · Low 22.0°C · 41 mm rain
- Santa Catarina in JulyMexico · 14 kmHigh 31.5°C · Low 22.4°C · 50 mm rain
- Ciudad Apodaca in JulyMexico · 17 kmHigh 33.5°C · Low 22.4°C · 41 mm rain
- Ciudad Benito Juárez in JulyMexico · 23 kmHigh 32.9°C · Low 22.1°C · 50 mm rain
- García in JulyMexico · 30 kmHigh 31.7°C · Low 22.1°C · 50 mm rain
- Saltillo in JulyMexico · 72 kmHigh 27.1°C · Low 17.0°C · 103 mm rain
- Linares in JulyMexico · 119 kmHigh 34.0°C · Low 22.3°C · 58 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 Monterrey) is explained once on the Monterrey year overview and on the Sources, method and limits page.
Ciudad Apodaca and Ciudad General Escobedo lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.