Weather on August 27
Simi Valley, CA
55 Years of Data
Avg High
92°F
Avg Low
65°F
Warmest
2017
89°F avg
Coldest
2002
68°F avg
About This Date
August 27th in Simi Valley, CA typically brings hot summer weather, with average highs around 92°F and lows near 65°F — a 27°F daily swing. Over 30 years of records, the warmest August 27th was in 2017 (89°F average), while the coldest was 2002 (68°F) — a 21°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 3.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.1°F warmer on this date compared to 20-30 years ago.
Planning for August 27th in Simi Valley, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 98° | 65° | 81° | — | — |
| 2024 | 93° | 66° | 80° | — | — |
| 2023 | 100° | 76° | 88° | — | — |
| 2022 | 92° | 62° | 77° | — | — |
| 2021 | 102° | 72° | 87° | — | — |
| 2020 | 97° | 75° | 86° | — | — |
| 2019 | 98° | 68° | 83° | — | — |
| 2018 | 87° | 58° | 72° | — | — |
| 2017warmest | 101° | 77° | 89° | — | — |
| 2016 | 80° | 56° | 68° | — | — |
| 2015 | 100° | 72° | 86° | — | — |
| 2014 | 94° | 69° | 81° | — | — |
| 2013 | 95° | 74° | 84° | — | — |
| 2012 | 88° | 59° | 73° | — | — |
| 2011 | 97° | 68° | 82° | — | — |
| 2010 | 80° | 55° | 68° | — | — |
| 2009 | 97° | 65° | 81° | — | — |
| 2008 | 82° | 59° | 71° | — | — |
| 2007 | 84° | 64° | 74° | — | — |
| 2006 | 84° | 57° | 71° | — | — |
| 2005 | 90° | 70° | 80° | — | — |
| 2004 | 79° | 61° | 70° | — | — |
| 2003 | 88° | 64° | 76° | — | — |
| 2002coldest | 77° | 59° | 68° | — | — |
| 2001 | 101° | 65° | 83° | — | — |
| 2000 | 90° | 61° | 75° | — | — |
| 1999 | 99° | 71° | 85° | — | — |
| 1998 | 98° | 64° | 81° | — | — |
| 1997 | 96° | 68° | 82° | — | — |
| 1996 | 97° | 64° | 80° | — | — |
30 years of data from SIMI VALLEY CALIFORNIA