San Luis Río Colorado Weather in September
Average highs run from 42°C on September 1 to 37°C on September 30, and lows from 27°C to 21°C. Normal precipitation for the month is 12 mm over about 3 wet days.
September day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
September at a glance
- Average high
- 40°C
- Average low
- 24°C
- Precipitation
- 12 mm
- Reanalysis high
- 48°CSep 6, 2020
- Reanalysis low
- 12°CSep 30, 2019
- Daylight
- 12 h 49 min to 11 h 52 min
- Cloud cover
- 29%
- Humidity
- 32%
- Dew point
- 10°C
- Wind
- 9.7 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Sep 1 | 42°C | 27°C | 47°C 2007 | 19°C 1992 | 8% |
| Sep 2 | 42°C | 26°C | 46°C 2002 | 17°C 2000 | 10% |
| Sep 3 | 42°C | 26°C | 47°C 2010 | 18°C 2000 | 9% |
| Sep 4 | 41°C | 26°C | 47°C 2020 | 18°C 2000 | 9% |
| Sep 5 | 41°C | 26°C | 47°C 2020 | 18°C 2016 | 9% |
| Sep 6 | 41°C | 26°C | 48°C 2020 | 19°C 2016 | 9% |
| Sep 7 | 41°C | 25°C | 47°C 2020 | 20°C 1992 | 8% |
| Sep 8 | 41°C | 25°C | 47°C 2011 | 19°C 2001 | 8% |
| Sep 9 | 41°C | 25°C | 44°C 1993 | 18°C 2010 | 8% |
| Sep 10 | 41°C | 25°C | 45°C 2018 | 17°C 1991 | 8% |
| Sep 11 | 40°C | 24°C | 45°C 2018 | 15°C 1991 | 7% |
| Sep 12 | 40°C | 24°C | 45°C 2004 | 17°C 2005 | 7% |
| Sep 13 | 40°C | 24°C | 45°C 1995 | 16°C 2005 | 6% |
| Sep 14 | 40°C | 24°C | 45°C 2000 | 16°C 2005 | 6% |
| Sep 15 | 40°C | 23°C | 46°C 2000 | 17°C 2005 | 6% |
| Sep 16 | 40°C | 23°C | 44°C 2020 | 17°C 2006 | 6% |
| Sep 17 | 39°C | 23°C | 45°C 2020 | 16°C 1993 | 4% |
| Sep 18 | 39°C | 23°C | 44°C 1998 | 14°C 1993 | 4% |
| Sep 19 | 39°C | 23°C | 44°C 2000 | 17°C 1999 | 5% |
| Sep 20 | 39°C | 23°C | 43°C 2000 | 16°C 2004 | 5% |
| Sep 21 | 39°C | 23°C | 43°C 2003 | 17°C 2007 | 4% |
| Sep 22 | 39°C | 22°C | 44°C 2002 | 16°C 2017 | 4% |
| Sep 23 | 39°C | 22°C | 45°C 2002 | 15°C 2017 | 4% |
| Sep 24 | 39°C | 22°C | 44°C 2002 | 15°C 2007 | 5% |
| Sep 25 | 38°C | 22°C | 44°C 2015 | 16°C 2017 | 6% |
| Sep 26 | 38°C | 22°C | 43°C 2001 | 16°C 1998 | 6% |
| Sep 27 | 38°C | 22°C | 44°C 2009 | 15°C 2013 | 6% |
| Sep 28 | 38°C | 21°C | 43°C 2001 | 14°C 2013 | 5% |
| Sep 29 | 37°C | 21°C | 43°C 2001 | 15°C 1998 | 5% |
| Sep 30 | 37°C | 21°C | 43°C 2020 | 12°C 2019 | 5% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-7).
- September 1
- sunrise 6:14 AM, sunset 7:03 PM
- September 30
- sunrise 6:33 AM, sunset 6:25 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.