Río Blanco in Summer
In summer (June, July and August), Río Blanco sees average daytime highs around 21°C and overnight lows near 12°C, with 456 mm of rain over about 55 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 21°C. The sky is clear or mostly clear about 15% of the time across summer, and the air most often feels dry.
Summer is Río Blanco's weakest season of the year to visit on our travel score. For the whole year in context, see Río Blanco's year-round climate.
- Avg daytime high
- 21°C
- 2nd-warmest season
- Avg overnight low
- 12°C
- Rainfall
- 456 mm
- 55 wet days
- Avg wind
- 7 km/h
- Travel score
- 5.2
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Río Blanco in Summer
Across summer, daytime highs hold fairly steady around 21°C.
A typical summer day in Río Blanco reaches about 21°C and drops to 12°C overnight. The warmest of the three months is June, the coolest July.
Río Blanco weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 18° / 6° | 35 | 9.1 | 11 | 6.2 |
| Feb | 20° / 7° | 35 | 8.9 | 11.4 | 6.6 |
| Mar | 22° / 9° | 67 | 12.9 | 11.9 | 6.4 |
| Apr | 23° / 11° | 108 | 16.8 | 12.4 | 5.8 |
| May | 23° / 12° | 156 | 20.8 | 12.9 | 5.1 |
| Jun | 22° / 12° | 203 | 21.3 | 13.1 | 4.7 |
| Jul | 21° / 11° | 120 | 15.6 | 13 | 5.5 |
| Aug | 21° / 11° | 133 | 17.7 | 12.6 | 5.3 |
| Sep | 21° / 12° | 188 | 21.2 | 12.1 | 4.6 |
| Oct | 20° / 11° | 124 | 16.8 | 11.6 | 5.2 |
| Nov | 19° / 9° | 57 | 11.3 | 11.1 | 5.9 |
| Dec | 18° / 7° | 30 | 7.8 | 10.9 | 6.4 |
Cloud cover in Summer
The sky is clear or mostly clear about 15% of the time across summer.
Chance of precipitation in Summer
Río Blanco gets around 456 mm of rain over 55 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 7 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 hours in early June to 12 h 24 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 6.2 kWh/m².
Hazard calendar for Río Blanco
In summer, Río Blanco overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Río Blanco's rainy season runs April–October, when most of the year's rain falls.
Is summer a good time to visit Río Blanco?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Río Blanco for sightseeing.
What to pack for Río Blanco in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Río Blanco sees daytime highs around 21°C and nights near 12°C. Pack rain gear and sun protection. About 55 days see rain.
UV index in Río Blanco in Summer
Clear-sky midday UV across summer averages around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Río Blanco peaks around April 11 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 8 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 9 | 12 | 13 | 15 | 9 | 13 | 13 | 14 | 13 | 11 | 9 | 8 |
| Level | Very high | Extreme | Extreme | Extreme | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 9 | Very high |
| Feb | 12 | Extreme |
| Mar | 13 | Extreme |
| Apr | 15 | Extreme |
| May | 9 | Very high |
| Jun | 13 | Extreme |
| Jul | 13 | Extreme |
| Aug | 14 | Extreme |
| Sep | 13 | Extreme |
| Oct | 11 | Extreme |
| Nov | 9 | Very high |
| Dec | 8 | Very high |
Air quality in Río Blanco in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Río Blanco is worst in May — around 38 µg/m³ PM2.5 (poor), about 1.9× the cleanest month (January, 20 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 20 | 20 | 23 | 29 | 38 | 30 | 25 | 22 | 25 | 22 | 22 | 23 |
| Level | Moderate | Moderate | Moderate | Moderate | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 20 | Moderate |
| Feb | 20 | Moderate |
| Mar | 23 | Moderate |
| Apr | 29 | Moderate |
| May | 38 | Poor |
| Jun | 30 | Moderate |
| Jul | 25 | Moderate |
| Aug | 22 | Moderate |
| Sep | 25 | Moderate |
| Oct | 22 | Moderate |
| Nov | 22 | Moderate |
| Dec | 23 | Moderate |
Where is Río Blanco?
Río Blanco sits at 18.8°N, 97.2°W, 1,278 m above sea level, in Mexico. The nearest listed city is Nogales, 1.0 km away.
Topography around Río Blanco
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Río Blanco.
Within 3 km, the terrain around Río Blanco has large variations in elevation — a maximum elevation change of 1,064 m around an average of 1,501 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,373 m; within 80 km, extreme variations in elevation — a maximum elevation change of 5,532 m.
The land around Río Blanco is covered by trees (77%) within 3 km, trees (75%) within 16 km, and trees (46%) and shrubs (21%) within 80 km.
Mexico travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type A / B
- 120 / 127 V · 60 Hz
- Prices
- ≈ 54% of US
- price level, 2025
- GDP per capita
- $13,889
- 2025
- Happiness
- 7.0 / 10
- World Happiness, 2025
- Safe drinking water
- 43%
- of population, 2024
- Homicide rate
- 24.9
- per 100k, 2023
- Road deaths
- 12.8
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Very low
- EF EPI 440
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Río Blanco (18.8304°, -97.156°, elevation 1,278 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.