Valle de Santiago in Fall
In fall (September, October and November), Valle de Santiago sees average daytime highs around 27°C and overnight lows near 13°C, with 173 mm of rain over about 25 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Across fall, daytime highs hold fairly steady around 27°C. The sky is clear or mostly clear about 37% of the time across fall, and the air most often feels dry.
Fall is Valle de Santiago's 2nd-best season to visit on our travel score. For the whole year in context, see Valle de Santiago's year-round climate.
- Avg daytime high
- 27°C
- 3rd-warmest season
- Avg overnight low
- 13°C
- Rainfall
- 173 mm
- 25 wet days
- Avg wind
- 7 km/h
- Travel score
- 6.9
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Valle de Santiago in Fall
Across fall, daytime highs hold fairly steady around 27°C.
A typical fall day in Valle de Santiago reaches about 27°C and drops to 13°C overnight. The warmest of the three months is October, the coolest November.
How fall really feels in Valle de Santiago
Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
fall sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Valle de Santiago weather by month
How the three fall months (September, October and November) 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 | 25° / 8° | 10 | 1.9 | 10.9 | 8.6 |
| Feb | 27° / 10° | 12 | 2.1 | 11.3 | 8.2 |
| Mar | 29° / 12° | 11 | 1.8 | 11.9 | 6.9 |
| Apr | 31° / 14° | 9 | 2.2 | 12.5 | 5.3 |
| May | 32° / 16° | 37 | 6.3 | 13 | 4.4 |
| Jun | 30° / 17° | 135 | 14.7 | 13.2 | 4.4 |
| Jul | 28° / 16° | 170 | 20.3 | 13.1 | 4.9 |
| Aug | 28° / 16° | 146 | 18 | 12.7 | 5.2 |
| Sep | 27° / 15° | 122 | 16 | 12.1 | 5.5 |
| Oct | 27° / 14° | 39 | 6.9 | 11.5 | 7.0 |
| Nov | 26° / 11° | 13 | 2.5 | 11 | 8.2 |
| Dec | 25° / 9° | 4 | 1.1 | 10.8 | 8.7 |
Cloud cover in Fall
The sky is clear or mostly clear about 37% of the time across fall.
Chance of precipitation in Fall
Valle de Santiago gets around 173 mm of rain over 25 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 7 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 24 min in early September to 10 h 54 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 5.3 kWh/m².
Hazard calendar for Valle de Santiago
In fall, Valle de Santiago overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Valle de Santiago's rainy season runs June–September, when most of the year's rain falls.
Is fall a good time to visit Valle de Santiago?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit Valle de Santiago for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Valle de Santiago in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Valle de Santiago sees daytime highs around 27°C and nights near 13°C. Pack light clothes and rain gear. Worth having: sun protection. About 25 days see rain.
UV index in Valle de Santiago in Fall
Clear-sky midday UV across fall averages around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Valle de Santiago peaks around June 14 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 7 (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) | 8 | 10 | 13 | 13 | 13 | 14 | 12 | 13 | 11 | 10 | 8 | 7 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 8 | Very high |
| Feb | 10 | Extreme |
| Mar | 13 | Extreme |
| Apr | 13 | Extreme |
| May | 13 | Extreme |
| Jun | 14 | Extreme |
| Jul | 12 | Extreme |
| Aug | 13 | Extreme |
| Sep | 11 | Extreme |
| Oct | 10 | Extreme |
| Nov | 8 | Very high |
| Dec | 7 | Very high |
Air quality in Valle de Santiago in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Valle de Santiago is worst in May — around 27 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 24 | 23 | 20 | 24 | 27 | 18 | 21 | 18 | 19 | 17 | 21 | 26 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 24 | Moderate |
| Feb | 23 | Moderate |
| Mar | 20 | Moderate |
| Apr | 24 | Moderate |
| May | 27 | Moderate |
| Jun | 18 | Moderate |
| Jul | 21 | Moderate |
| Aug | 18 | Moderate |
| Sep | 19 | Moderate |
| Oct | 17 | Moderate |
| Nov | 21 | Moderate |
| Dec | 26 | Moderate |
Where is Valle de Santiago?
Valle de Santiago sits at 20.4°N, 101.2°W, 1,792 m above sea level, in Mexico. The nearest listed city is Jaral del Progreso, 13 km away.
Topography around Valle de Santiago
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Valle de Santiago.
Within 3 km, the terrain around Valle de Santiago has only modest variations in elevation — a maximum elevation change of 162 m around an average of 1,746 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 763 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,584 m.
The land around Valle de Santiago is covered by cropland (40%) and artificial surfaces (34%) within 3 km, cropland (51%) within 16 km, and cropland (37%) and shrubs (23%) 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 Valle de Santiago (20.3915°, -101.191°, elevation 1,792 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.