Hermosillo Weather in September
Average highs run from 37°C on September 1 to 36°C on September 30, and lows from 25°C to 22°C. Normal precipitation for the month is 69 mm over about 9 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
- 37°C
- Average low
- 24°C
- Precipitation
- 69 mm
- Reanalysis high
- 45°CSep 5, 2020
- Reanalysis low
- 16°CSep 26, 2017
- Daylight
- 12 h 43 min to 11 h 54 min
- Cloud cover
- 35%
- Humidity
- 57%
- Dew point
- 19°C
- Wind
- 10.4 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 | 37°C | 25°C | 43°C 2007 | 22°C 2000 | 48% |
| Sep 2 | 37°C | 25°C | 43°C 2010 | 22°C 2000 | 47% |
| Sep 3 | 37°C | 25°C | 42°C 2000 | 23°C 2006 | 46% |
| Sep 4 | 37°C | 25°C | 43°C 2000 | 23°C 1999 | 46% |
| Sep 5 | 37°C | 25°C | 45°C 2020 | 23°C 1999 | 44% |
| Sep 6 | 37°C | 25°C | 43°C 2020 | 23°C 1992 | 43% |
| Sep 7 | 37°C | 25°C | 45°C 2000 | 23°C 2001 | 41% |
| Sep 8 | 37°C | 25°C | 43°C 1992 | 21°C 2001 | 38% |
| Sep 9 | 37°C | 25°C | 39°C 1992 | 19°C 2001 | 36% |
| Sep 10 | 37°C | 25°C | 40°C 1992 | 21°C 2010 | 35% |
| Sep 11 | 37°C | 25°C | 41°C 2001 | 22°C 2020 | 33% |
| Sep 12 | 37°C | 25°C | 43°C 2000 | 22°C 2003 | 32% |
| Sep 13 | 37°C | 25°C | 43°C 2000 | 20°C 2005 | 31% |
| Sep 14 | 37°C | 24°C | 42°C 2000 | 19°C 2005 | 30% |
| Sep 15 | 37°C | 24°C | 42°C 2020 | 20°C 2005 | 28% |
| Sep 16 | 37°C | 24°C | 43°C 2020 | 18°C 2006 | 25% |
| Sep 17 | 37°C | 24°C | 42°C 2020 | 18°C 2006 | 25% |
| Sep 18 | 37°C | 24°C | 42°C 2010 | 16°C 1993 | 23% |
| Sep 19 | 37°C | 24°C | 43°C 2010 | 18°C 1993 | 21% |
| Sep 20 | 37°C | 24°C | 41°C 2011 | 19°C 1996 | 20% |
| Sep 21 | 37°C | 23°C | 41°C 2005 | 20°C 1996 | 18% |
| Sep 22 | 37°C | 23°C | 42°C 2005 | 18°C 2004 | 18% |
| Sep 23 | 37°C | 23°C | 42°C 2011 | 17°C 2004 | 18% |
| Sep 24 | 37°C | 23°C | 42°C 2020 | 18°C 2017 | 17% |
| Sep 25 | 37°C | 23°C | 41°C 2010 | 16°C 2017 | 15% |
| Sep 26 | 37°C | 23°C | 42°C 2009 | 16°C 2017 | 14% |
| Sep 27 | 37°C | 23°C | 42°C 2009 | 17°C 2017 | 13% |
| Sep 28 | 37°C | 23°C | 44°C 2020 | 18°C 2017 | 12% |
| Sep 29 | 37°C | 22°C | 43°C 2020 | 18°C 2013 | 11% |
| Sep 30 | 36°C | 22°C | 44°C 2020 | 18°C 2013 | 10% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-7).
- September 1
- sunrise 6:02 AM, sunset 6:45 PM
- September 30
- sunrise 6:17 AM, sunset 6:11 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 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.