Matamoros Weather in May
Average highs run from 34°C on May 1 to 36°C on May 31, and lows from 16°C to 20°C. Normal precipitation for the month is 12 mm over about 3 wet days.
May day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
May at a glance
- Average high
- 35°C
- Average low
- 18°C
- Precipitation
- 12 mm
- Reanalysis high
- 42°CMay 31, 2018
- Reanalysis low
- 9°CMay 3, 2013
- Daylight
- 13 h 08 min to 13 h 37 min
- Cloud cover
- 38%
- Humidity
- 30%
- Dew point
- 4°C
- Wind
- 11.9 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 |
|---|---|---|---|---|---|
| May 1 | 34°C | 16°C | 38°C 2002 | 12°C 2015 | 4% |
| May 2 | 34°C | 16°C | 37°C 2017 | 11°C 2004 | 5% |
| May 3 | 34°C | 16°C | 37°C 1999 | 9°C 2013 | 5% |
| May 4 | 34°C | 16°C | 39°C 2003 | 12°C 2010 | 4% |
| May 5 | 34°C | 16°C | 39°C 2002 | 13°C 1999 | 4% |
| May 6 | 34°C | 16°C | 39°C 2010 | 13°C 2001 | 5% |
| May 7 | 34°C | 17°C | 39°C 2009 | 12°C 2005 | 6% |
| May 8 | 34°C | 17°C | 41°C 1998 | 12°C 2005 | 7% |
| May 9 | 34°C | 17°C | 39°C 2003 | 13°C 1995 | 8% |
| May 10 | 34°C | 17°C | 40°C 2002 | 12°C 1992 | 8% |
| May 11 | 34°C | 17°C | 39°C 2002 | 13°C 1998 | 8% |
| May 12 | 34°C | 17°C | 39°C 2003 | 14°C 1995 | 8% |
| May 13 | 34°C | 17°C | 41°C 1998 | 13°C 1997 | 9% |
| May 14 | 35°C | 17°C | 41°C 1998 | 11°C 2014 | 10% |
| May 15 | 35°C | 18°C | 41°C 2003 | 10°C 2014 | 10% |
| May 16 | 35°C | 18°C | 40°C 2017 | 12°C 2014 | 10% |
| May 17 | 35°C | 18°C | 39°C 1998 | 13°C 2008 | 10% |
| May 18 | 35°C | 18°C | 39°C 1998 | 14°C 2008 | 11% |
| May 19 | 35°C | 18°C | 40°C 2003 | 13°C 2011 | 11% |
| May 20 | 35°C | 18°C | 40°C 2019 | 15°C 2006 | 13% |
| May 21 | 35°C | 19°C | 40°C 1998 | 15°C 2019 | 12% |
| May 22 | 35°C | 19°C | 40°C 1995 | 15°C 2007 | 13% |
| May 23 | 35°C | 19°C | 40°C 1998 | 14°C 1992 | 13% |
| May 24 | 35°C | 19°C | 39°C 2004 | 14°C 1993 | 13% |
| May 25 | 36°C | 19°C | 40°C 2017 | 15°C 2015 | 14% |
| May 26 | 36°C | 19°C | 39°C 2004 | 14°C 2015 | 15% |
| May 27 | 36°C | 19°C | 40°C 2011 | 14°C 1993 | 15% |
| May 28 | 36°C | 20°C | 40°C 2011 | 15°C 1993 | 14% |
| May 29 | 36°C | 20°C | 40°C 2018 | 17°C 2015 | 15% |
| May 30 | 36°C | 20°C | 41°C 2012 | 17°C 2009 | 15% |
| May 31 | 36°C | 20°C | 42°C 2018 | 15°C 2020 | 16% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (CST).
- May 1
- sunrise 6:16 AM, sunset 7:24 PM
- May 31
- sunrise 6:02 AM, sunset 7:39 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.