Santa Clara Weather in September
Average highs run from 33°C on September 1 to 31°C on September 30, and lows from 16°C to 18°C. Normal precipitation for the month is 48 mm over about 11 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
- 17°C
- Precipitation
- 48 mm
- Reanalysis high
- 37°CSep 20, 2017
- Reanalysis low
- 13°CSep 5, 2014
- Daylight
- 11 h 55 min to 12 h 11 min
- Cloud cover
- 56%
- Humidity
- 58%
- Dew point
- 14°C
- Wind
- 10.1 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 | 33°C | 16°C | 36°C 2009 | 14°C 1992 | 8% |
| Sep 2 | 33°C | 16°C | 35°C 2009 | 13°C 1992 | 8% |
| Sep 3 | 33°C | 16°C | 35°C 2009 | 13°C 1992 | 9% |
| Sep 4 | 33°C | 16°C | 35°C 2011 | 13°C 2014 | 10% |
| Sep 5 | 33°C | 16°C | 35°C 2004 | 13°C 2014 | 11% |
| Sep 6 | 33°C | 16°C | 36°C 2009 | 13°C 2014 | 12% |
| Sep 7 | 33°C | 17°C | 36°C 2005 | 14°C 2014 | 13% |
| Sep 8 | 33°C | 17°C | 36°C 2005 | 14°C 1993 | 15% |
| Sep 9 | 33°C | 17°C | 36°C 2005 | 14°C 1993 | 16% |
| Sep 10 | 33°C | 17°C | 35°C 2005 | 15°C 2020 | 19% |
| Sep 11 | 33°C | 17°C | 35°C 2015 | 14°C 2020 | 21% |
| Sep 12 | 33°C | 17°C | 35°C 2015 | 13°C 2020 | 23% |
| Sep 13 | 33°C | 17°C | 36°C 2005 | 15°C 2020 | 26% |
| Sep 14 | 33°C | 17°C | 36°C 2015 | 15°C 1992 | 28% |
| Sep 15 | 33°C | 17°C | 36°C 2015 | 15°C 1992 | 31% |
| Sep 16 | 32°C | 17°C | 35°C 2007 | 16°C 1991 | 34% |
| Sep 17 | 32°C | 17°C | 35°C 2007 | 16°C 1992 | 38% |
| Sep 18 | 32°C | 17°C | 36°C 2016 | 15°C 1992 | 42% |
| Sep 19 | 32°C | 18°C | 35°C 2006 | 15°C 1992 | 45% |
| Sep 20 | 32°C | 18°C | 37°C 2017 | 16°C 1991 | 49% |
| Sep 21 | 32°C | 18°C | 36°C 2017 | 17°C 1992 | 52% |
| Sep 22 | 32°C | 18°C | 36°C 2016 | 16°C 1992 | 56% |
| Sep 23 | 32°C | 18°C | 36°C 2017 | 16°C 1992 | 58% |
| Sep 24 | 32°C | 18°C | 36°C 2015 | 16°C 1992 | 61% |
| Sep 25 | 32°C | 18°C | 35°C 2015 | 16°C 1996 | 62% |
| Sep 26 | 32°C | 18°C | 35°C 2006 | 15°C 1996 | 64% |
| Sep 27 | 31°C | 18°C | 35°C 2008 | 15°C 1996 | 66% |
| Sep 28 | 31°C | 18°C | 34°C 2017 | 16°C 2011 | 69% |
| Sep 29 | 31°C | 18°C | 34°C 2015 | 16°C 1994 | 70% |
| Sep 30 | 31°C | 18°C | 36°C 2017 | 15°C 2013 | 72% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+1).
- September 1
- sunrise 6:01 AM, sunset 5:56 PM
- September 30
- sunrise 5:43 AM, sunset 5:54 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 2026-09-27. Sun and moon: computed with the NOAA solar equations and Meeus.