worldweather26°Cwarmer than usual
usually 22°C–26°C
warmer than 84% of similar days
night: exceptionally warm
rain: less rain than usual
wind: stronger than usual
Weather in San Luis Potosí - 14-day forecast
Detailed weather forecast for San Luis Potosí, Mexico: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in San Luis Potosí
today🌤️
26°💧 0.4 mm
Sun🌧️
24°💧 0.9 mm
Mon🌧️
23°💧 2.3 mm
Tue🌧️
19°💧 4.6 mm
Wed🌧️
17°💧 2.6 mm
Thu🌧️
20°💧 6.8 mm
Fri🌧️
20°💧 13.6 mm
Sat🌧️
24°💧 11 mm
Forecast vs 1991-2020 climate normal
NASA POWERHow does the current forecast compare with normal?
We compare the coming days with weather usually observed at this time of year.
Wednesday 9 Sept in San Luis Potosí, the forecast high is 17°C. Typical daytime temperatures at this time of year range from 22°C to 26°C, so it will be exceptionally cool. It is cooler than 99% of similar days.
24°Cnear normal
usually 22°C–26°C
night: exceptionally warm
rain: typical rainfall
wind: exceptionally strong
23°Cnear normal
usually 22°C–26°C
night: exceptionally warm
rain: typical rainfall
wind: stronger than usual
19°Cexceptionally cool
usually 22°C–26°C
cooler than 97% of similar days
night: exceptionally warm
rain: more rain than usual
wind: lighter than usual
17°Cexceptionally cool
usually 22°C–26°C
cooler than 99% of similar days
night: exceptionally warm
rain: typical rainfall
wind: lighter than usual
20°Cexceptionally cool
usually 22°C–26°C
cooler than 95% of similar days
night: exceptionally warm
rain: more rain than usual
wind: exceptionally light
20°Cexceptionally cool
usually 22°C–26°C
cooler than 96% of similar days
night: exceptionally warm
rain: exceptionally wet
wind: exceptionally light
How warm was this week in previous years?
Each bar shows the average daily high during the same 7-day period in each year.
cooler yearstypical rangewarmer years2026 forecastcurrent forecast
From 1981 to 2025, the 5-11 Sept period averaged 24°C by day. The coolest year was 1984 (20°C) and the warmest was 2023 (28°C). The current forecast averages 22°C - lower than in 98% of historical years.
Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.
14-day forecast - San Luis Potosí
San Luis Potosí 30 & 45-day weather - long-range outlook
Next 15 days · forecast
22°
around 18° at night · days with rain: 11
Weeks 3-4 · avg for September
26°
around 13° at night · rain chance 37%
Weeks 5-7 · avg for October
25°
around 10° at night · rain chance 22%
The 30 & 45-day outlook for San Luis Potosí: the next 15 days are a numerical forecast updated daily - on average 22° by day and 18° at night. Further out we rely on multi-year climate averages: around 26° in September, and about 25° in October. Forecasts beyond two weeks are indicative only.
Day-by-day forecast for San Luis Potosí
Saturday5 September 2026
🌤️26°a few clouds
Sunday6 September 2026
🌧️24°light rain
Monday7 September 2026
🌧️23°moderate rain
Tuesday8 September 2026
🌧️19°light rain
Wednesday9 September 2026
🌧️17°light rain
Thursday10 September 2026
🌧️20°light rain
Friday11 September 2026
🌧️20°moderate rain
Saturday12 September 2026
🌧️24°light rain
Sunday13 September 2026
🌧️23°moderate rain
Monday14 September 2026
🌧️23°moderate rain
Tuesday15 September 2026
☁️23°broken clouds
Wednesday16 September 2026
☁️24°broken clouds
Thursday17 September 2026
🌧️24°moderate rain
Friday18 September 2026
🌧️21°light rain
Saturday19 September 2026
🌧️21°light rain
UV index in San Luis Potosí - is it safe to sunbathe?
Today the UV index in San Luis Potosí is 9 (very high) - unprotected fair skin can burn in about 20 minutes. SPF 50, long sleeves and shade between 10:00 and 16:00.
Air quality and smog in San Luis Potosí
Air quality in San Luis Potosí is currently very good. Fine particulate PM2.5: 7.1 µg/m³, PM10: 7.7 µg/m³.
| City | PM2.5 (µg/m³) | PM10 (µg/m³) | Air quality |
|---|---|---|---|
| San Luis Potosí | 7.1 | 7.7 | very good |
Based on PM2.5 thresholds. Station readings, updated daily (last reading: 2026-09-04, 19:00).
San Luis Potosí weather through the year
Warmest, driest months on average: May, June, July, August.
Upcoming public holidays in Mexico: Independence Day — 16 September · Revolution Day — 16 November · Christmas Day — 25 December.
Nearby and related places
FAQ - San Luis Potosí weather
What is the weather like in San Luis Potosí today?
Today it is about 26° during the day and 19° at night, a few clouds.
How far ahead can I check the forecast for San Luis Potosí?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.