Río Grande Weather in August
Average highs run from 28°C on August 1 to 27°C on August 31, and lows from 15°C to 14°C. Normal precipitation for the month is 78 mm over about 16 wet days.
August day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
August at a glance
- Average high
- 28°C
- Average low
- 14°C
- Precipitation
- 78 mm
- Reanalysis high
- 34°CAug 13, 2019
- Reanalysis low
- 10°CAug 13, 1991
- Daylight
- 13 h 13 min to 12 h 37 min
- Cloud cover
- 54%
- Humidity
- 58%
- Dew point
- 11°C
- Wind
- 13.7 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 |
|---|---|---|---|---|---|
| Aug 1 | 28°C | 15°C | 32°C 2009 | 12°C 2010 | 54% |
| Aug 2 | 28°C | 15°C | 32°C 2019 | 12°C 1999 | 55% |
| Aug 3 | 28°C | 14°C | 32°C 2019 | 12°C 1991 | 55% |
| Aug 4 | 28°C | 14°C | 32°C 2009 | 11°C 1993 | 54% |
| Aug 5 | 28°C | 14°C | 32°C 2009 | 12°C 2002 | 52% |
| Aug 6 | 28°C | 14°C | 32°C 2015 | 13°C 1991 | 52% |
| Aug 7 | 28°C | 14°C | 32°C 2009 | 13°C 1991 | 51% |
| Aug 8 | 28°C | 14°C | 32°C 2019 | 11°C 1993 | 51% |
| Aug 9 | 28°C | 14°C | 32°C 1997 | 11°C 1991 | 52% |
| Aug 10 | 28°C | 14°C | 33°C 2019 | 10°C 2000 | 52% |
| Aug 11 | 28°C | 14°C | 32°C 1997 | 11°C 1991 | 52% |
| Aug 12 | 28°C | 14°C | 32°C 2019 | 10°C 1991 | 51% |
| Aug 13 | 28°C | 14°C | 34°C 2019 | 10°C 1991 | 50% |
| Aug 14 | 28°C | 14°C | 32°C 2019 | 11°C 1991 | 50% |
| Aug 15 | 28°C | 14°C | 32°C 2001 | 12°C 1991 | 50% |
| Aug 16 | 28°C | 14°C | 32°C 2001 | 12°C 1999 | 49% |
| Aug 17 | 28°C | 14°C | 32°C 2011 | 11°C 2000 | 49% |
| Aug 18 | 28°C | 14°C | 32°C 2019 | 11°C 2000 | 50% |
| Aug 19 | 28°C | 14°C | 33°C 2019 | 11°C 2000 | 52% |
| Aug 20 | 28°C | 14°C | 33°C 2019 | 11°C 2013 | 52% |
| Aug 21 | 28°C | 14°C | 32°C 2019 | 11°C 2002 | 52% |
| Aug 22 | 28°C | 14°C | 32°C 2019 | 11°C 2012 | 52% |
| Aug 23 | 28°C | 14°C | 31°C 1997 | 11°C 2000 | 52% |
| Aug 24 | 28°C | 14°C | 32°C 2011 | 11°C 2000 | 54% |
| Aug 25 | 28°C | 14°C | 32°C 2018 | 11°C 2005 | 56% |
| Aug 26 | 27°C | 14°C | 31°C 2018 | 12°C 1992 | 57% |
| Aug 27 | 27°C | 14°C | 31°C 2018 | 11°C 1993 | 58% |
| Aug 28 | 27°C | 14°C | 31°C 2018 | 12°C 1993 | 59% |
| Aug 29 | 27°C | 14°C | 31°C 2010 | 11°C 2015 | 61% |
| Aug 30 | 27°C | 14°C | 32°C 2010 | 11°C 2002 | 60% |
| Aug 31 | 27°C | 14°C | 31°C 2010 | 12°C 2008 | 60% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (CST).
- August 1
- sunrise 6:22 AM, sunset 7:35 PM
- August 31
- sunrise 6:34 AM, sunset 7:11 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.