Weather on August 22
Simi Valley, CA
55 Years of Data
Avg High
89°F
Avg Low
62°F
Warmest
2025
90°F avg
Coldest
2002
64°F avg
About This Date
August 22nd in Simi Valley, CA typically brings warm summer weather, with average highs around 89°F and lows near 62°F — a 27°F daily swing. Over 30 years of records, the warmest August 22nd was in 2025 (90°F average), while the coldest was 2002 (64°F) — a 26°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 3.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.3°F warmer on this date compared to 20-30 years ago.
Planning for August 22nd in Simi Valley, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 105° | 75° | 90° | — | — |
| 2024 | 88° | 61° | 74° | — | — |
| 2023 | 86° | 62° | 74° | — | — |
| 2022 | 91° | 61° | 76° | — | — |
| 2021 | 81° | 57° | 69° | — | — |
| 2020 | 97° | 72° | 84° | — | — |
| 2019 | 94° | 62° | 78° | — | — |
| 2018 | 93° | 62° | 78° | — | — |
| 2017 | 94° | 64° | 79° | — | — |
| 2016 | 95° | 63° | 79° | — | — |
| 2015 | 86° | 60° | 73° | — | — |
| 2014 | 89° | 61° | 75° | — | — |
| 2013 | 97° | 67° | 82° | — | — |
| 2012 | 79° | 61° | 70° | — | — |
| 2011 | 79° | 57° | 68° | — | — |
| 2010 | 88° | 62° | 75° | — | — |
| 2009 | 91° | 67° | 79° | — | — |
| 2008 | 79° | 59° | 69° | — | — |
| 2007 | 79° | 61° | 70° | — | — |
| 2006 | 93° | 59° | 76° | — | — |
| 2005 | 84° | 55° | 70° | — | — |
| 2004 | 77° | 55° | 66° | — | — |
| 2003 | 77° | 59° | 68° | — | — |
| 2002coldest | 73° | 55° | 64° | — | — |
| 2001 | 82° | 56° | 69° | — | — |
| 2000 | 88° | 59° | 73° | — | — |
| 1999 | 98° | 64° | 81° | — | — |
| 1998 | 103° | 75° | 89° | — | — |
| 1997 | 101° | 69° | 85° | — | — |
| 1996 | 100° | 67° | 83° | — | — |
30 years of data from SIMI VALLEY CALIFORNIA