Weather on September 2
Simi Valley, CA
55 Years of Data
Avg High
89°F
Avg Low
64°F
Warmest
2017
95°F avg
Coldest
2000
64°F avg
About This Date
September 2nd in Simi Valley, CA typically brings warm fall weather, with average highs around 89°F and lows near 64°F — a 25°F daily swing. Over 29 years of records, the warmest September 2nd was in 2017 (95°F average), while the coldest was 2000 (64°F) — a 31°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.
Planning for September 2nd in Simi Valley, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 99° | 71° | 85° | — | — |
| 2024 | 98° | 66° | 82° | — | — |
| 2023 | 69° | 62° | 66° | — | — |
| 2022 | 104° | 74° | 89° | — | — |
| 2021 | 83° | 59° | 71° | — | — |
| 2020 | 89° | 60° | 75° | — | — |
| 2019 | 98° | 69° | 84° | — | — |
| 2018 | 85° | 61° | 73° | — | — |
| 2017warmest | 103° | 88° | 95° | — | — |
| 2016 | 88° | 58° | 73° | — | — |
| 2015 | 83° | 59° | 71° | — | — |
| 2014 | 90° | 61° | 75° | — | — |
| 2013 | 91° | 68° | 80° | — | — |
| 2012 | 84° | 57° | 71° | — | — |
| 2011 | 77° | 50° | 64° | — | — |
| 2010 | 87° | 58° | 72° | — | — |
| 2009 | 92° | 68° | 80° | — | — |
| 2008 | 82° | 59° | 71° | — | — |
| 2007 | 102° | 77° | 90° | — | — |
| 2006 | 91° | 63° | 77° | — | — |
| 2005 | 77° | 52° | 64° | — | — |
| 2004 | 88° | 63° | 75° | — | — |
| 2003 | 82° | 57° | 70° | — | — |
| 2002 | 102° | 72° | 87° | — | — |
| 2001 | 93° | 67° | 80° | — | — |
| 2000coldest | 74° | 55° | 64° | — | — |
| 1999 | 75° | 55° | 65° | — | — |
| 1998 | 102° | 77° | 90° | — | — |
| 1996 | 93° | 61° | 77° | — | — |
29 years of data from SIMI VALLEY CALIFORNIA