Weather on September 6
Simi Valley, CA
55 Years of Data
Avg High
92°F
Avg Low
62°F
Warmest
2020
101°F avg
Coldest
2009
21°F avg
About This Date
September 6th in Simi Valley, CA typically brings hot fall weather, with average highs around 92°F and lows near 62°F — a 30°F daily swing. Over 30 years of records, the warmest September 6th was in 2020 (101°F average), while the coldest was 2009 (21°F) — a 80°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 5.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.6°F warmer on this date compared to 20-30 years ago.
Planning for September 6th in Simi Valley, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
3.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 95° | 62° | 79° | — | — |
| 2024 | 109° | 84° | 97° | — | — |
| 2023 | 83° | 60° | 71° | — | — |
| 2022 | 106° | 74° | 90° | — | — |
| 2021 | 98° | 64° | 81° | — | — |
| 2020warmest | 117° | 85° | 101° | — | — |
| 2019 | 96° | 71° | 84° | — | — |
| 2018 | 88° | 59° | 73° | — | — |
| 2017 | 90° | 65° | 77° | — | — |
| 2016 | 83° | 55° | 69° | — | — |
| 2015 | 93° | 63° | 78° | — | — |
| 2014 | 100° | 66° | 83° | — | — |
| 2013 | 99° | 79° | 89° | — | — |
| 2012 | 84° | 64° | 74° | — | — |
| 2011 | 97° | 72° | 84° | — | — |
| 2010 | 76° | 55° | 65° | — | — |
| 2009coldest | 83° | -41° | 21° | — | — |
| 2008 | 86° | 63° | 74° | — | — |
| 2007 | 79° | 54° | 66° | — | — |
| 2006 | 91° | 66° | 79° | — | — |
| 2005 | 82° | 55° | 69° | — | — |
| 2004 | 95° | 70° | 82° | — | — |
| 2003 | 88° | 66° | 77° | — | — |
| 2002 | 87° | 64° | 76° | — | — |
| 2001 | 84° | 59° | 72° | — | — |
| 2000 | 93° | 64° | 79° | — | — |
| 1999 | 86° | 55° | 71° | — | — |
| 1998 | 95° | 65° | 80° | — | — |
| 1997 | 97° | 67° | 82° | — | — |
| 1996 | 95° | 61° | 78° | — | — |
30 years of data from SIMI VALLEY CALIFORNIA