Heroica Matamoros Weather in September
Average highs run from 34°C on September 1 to 32°C on September 30, and lows from 26°C to 23°C. Normal precipitation for the month is 135 mm over about 15 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
- 32°C
- Average low
- 25°C
- Precipitation
- 135 mm
- Reanalysis high
- 40°CSep 24, 2005
- Reanalysis low
- 15°CSep 30, 2020
- Daylight
- 12 h 39 min to 11 h 56 min
- Cloud cover
- 51%
- Humidity
- 74%
- Dew point
- 23°C
- Wind
- 14.4 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 | 34°C | 26°C | 38°C 2000 | 23°C 2008 | 48% |
| Sep 2 | 34°C | 26°C | 37°C 2011 | 24°C 2008 | 48% |
| Sep 3 | 33°C | 26°C | 39°C 2011 | 24°C 1994 | 50% |
| Sep 4 | 33°C | 26°C | 39°C 2000 | 23°C 1994 | 53% |
| Sep 5 | 33°C | 26°C | 40°C 2000 | 24°C 1994 | 56% |
| Sep 6 | 33°C | 26°C | 38°C 2000 | 24°C 2011 | 58% |
| Sep 7 | 33°C | 26°C | 38°C 2002 | 22°C 2011 | 60% |
| Sep 8 | 33°C | 26°C | 37°C 2012 | 21°C 2011 | 61% |
| Sep 9 | 33°C | 25°C | 37°C 2000 | 22°C 2011 | 60% |
| Sep 10 | 33°C | 25°C | 35°C 2014 | 22°C 2012 | 60% |
| Sep 11 | 33°C | 25°C | 36°C 2012 | 21°C 2020 | 59% |
| Sep 12 | 33°C | 25°C | 37°C 2011 | 20°C 2017 | 57% |
| Sep 13 | 33°C | 25°C | 37°C 2016 | 22°C 2017 | 55% |
| Sep 14 | 33°C | 25°C | 36°C 2016 | 23°C 2009 | 54% |
| Sep 15 | 32°C | 25°C | 37°C 2009 | 22°C 1993 | 55% |
| Sep 16 | 32°C | 25°C | 36°C 2005 | 19°C 2008 | 55% |
| Sep 17 | 32°C | 25°C | 37°C 2017 | 19°C 2008 | 54% |
| Sep 18 | 32°C | 25°C | 36°C 2016 | 21°C 2008 | 52% |
| Sep 19 | 32°C | 25°C | 37°C 2016 | 20°C 1994 | 50% |
| Sep 20 | 32°C | 25°C | 36°C 2016 | 21°C 2020 | 48% |
| Sep 21 | 32°C | 25°C | 37°C 2000 | 20°C 2002 | 46% |
| Sep 22 | 32°C | 24°C | 36°C 2005 | 16°C 1995 | 44% |
| Sep 23 | 32°C | 24°C | 39°C 2005 | 16°C 1995 | 41% |
| Sep 24 | 32°C | 24°C | 40°C 2005 | 19°C 2009 | 41% |
| Sep 25 | 32°C | 24°C | 39°C 2005 | 19°C 1991 | 39% |
| Sep 26 | 32°C | 24°C | 38°C 2005 | 16°C 1991 | 39% |
| Sep 27 | 32°C | 24°C | 38°C 2005 | 18°C 2000 | 38% |
| Sep 28 | 32°C | 24°C | 39°C 2005 | 17°C 2010 | 38% |
| Sep 29 | 32°C | 24°C | 37°C 2005 | 17°C 2010 | 38% |
| Sep 30 | 32°C | 23°C | 36°C 2005 | 15°C 2020 | 36% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (CDT).
- September 1
- sunrise 7:10 AM, sunset 7:49 PM
- September 30
- sunrise 7:22 AM, sunset 7:18 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.