La Unión Weather in September
Average highs run from 31°C on September 1 to 32°C on September 30, and lows from 18°C to 18°C. Normal precipitation for the month is 0 mm over about 0 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
- 31°C
- Average low
- 18°C
- Precipitation
- 0 mm
- Reanalysis high
- 36°CSep 13, 1997
- Reanalysis low
- 15°CSep 25, 2007
- Daylight
- 12 h 00 min to 12 h 08 min
- Cloud cover
- 44%
- Humidity
- 66%
- Dew point
- 15°C
- Wind
- 22.0 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 | 31°C | 18°C | 34°C 1997 | 16°C 2010 | 0% |
| Sep 2 | 31°C | 18°C | 34°C 2015 | 16°C 2020 | 0% |
| Sep 3 | 31°C | 18°C | 34°C 2015 | 16°C 2010 | 0% |
| Sep 4 | 31°C | 18°C | 34°C 1997 | 16°C 2010 | 0% |
| Sep 5 | 31°C | 18°C | 34°C 1997 | 16°C 2007 | 0% |
| Sep 6 | 31°C | 18°C | 34°C 1997 | 16°C 2007 | 0% |
| Sep 7 | 31°C | 18°C | 33°C 2015 | 16°C 2007 | 0% |
| Sep 8 | 31°C | 18°C | 33°C 1997 | 16°C 2007 | 0% |
| Sep 9 | 31°C | 18°C | 34°C 1997 | 16°C 1998 | 0% |
| Sep 10 | 31°C | 18°C | 34°C 2008 | 16°C 2003 | 0% |
| Sep 11 | 31°C | 18°C | 34°C 1997 | 16°C 2010 | 0% |
| Sep 12 | 31°C | 18°C | 36°C 1997 | 15°C 2010 | 0% |
| Sep 13 | 31°C | 18°C | 36°C 1997 | 16°C 2010 | 0% |
| Sep 14 | 31°C | 18°C | 35°C 1997 | 16°C 2010 | 0% |
| Sep 15 | 31°C | 18°C | 35°C 1997 | 16°C 1999 | 0% |
| Sep 16 | 31°C | 18°C | 35°C 1997 | 16°C 1992 | 0% |
| Sep 17 | 31°C | 18°C | 35°C 1997 | 16°C 2020 | 0% |
| Sep 18 | 31°C | 18°C | 35°C 1997 | 16°C 2007 | 0% |
| Sep 19 | 31°C | 18°C | 35°C 2015 | 16°C 2001 | 0% |
| Sep 20 | 31°C | 18°C | 35°C 1997 | 16°C 2007 | 0% |
| Sep 21 | 31°C | 18°C | 35°C 1997 | 16°C 2007 | 0% |
| Sep 22 | 31°C | 18°C | 34°C 1997 | 16°C 2007 | 1% |
| Sep 23 | 31°C | 18°C | 34°C 1997 | 16°C 2007 | 1% |
| Sep 24 | 31°C | 18°C | 35°C 1997 | 16°C 2007 | 1% |
| Sep 25 | 31°C | 18°C | 35°C 1997 | 15°C 2007 | 1% |
| Sep 26 | 32°C | 18°C | 34°C 2006 | 16°C 2007 | 1% |
| Sep 27 | 31°C | 18°C | 34°C 2012 | 16°C 2007 | 1% |
| Sep 28 | 32°C | 18°C | 35°C 1997 | 16°C 2007 | 1% |
| Sep 29 | 32°C | 18°C | 35°C 1997 | 16°C 2005 | 1% |
| Sep 30 | 32°C | 18°C | 34°C 1997 | 16°C 2005 | 1% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-5).
- September 1
- sunrise 6:23 AM, sunset 6:23 PM
- September 30
- sunrise 6:09 AM, sunset 6:17 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.