Weather on August 14
Simi Valley, CA
55 Years of Data
Avg High
91°F
Avg Low
63°F
Warmest
2020
92°F avg
Coldest
2010
63°F avg
About This Date
August 14th in Simi Valley, CA typically brings hot summer weather, with average highs around 91°F and lows near 63°F — a 28°F daily swing. Over 30 years of records, the warmest August 14th was in 2020 (92°F average), while the coldest was 2010 (63°F) — a 29°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 3.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.5°F warmer on this date compared to 20-30 years ago.
Planning for August 14th in Simi Valley, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 89° | 60° | 75° | — | — |
| 2024 | 92° | 67° | 79° | — | — |
| 2023 | 96° | 63° | 79° | — | — |
| 2022 | 98° | 71° | 85° | — | — |
| 2021 | 95° | 66° | 81° | — | — |
| 2020warmest | 106° | 78° | 92° | — | — |
| 2019 | 103° | 68° | 85° | — | — |
| 2018 | 91° | 62° | 77° | — | — |
| 2017 | 86° | 58° | 72° | — | — |
| 2016 | 98° | 68° | 83° | — | — |
| 2015 | 100° | 76° | 88° | — | — |
| 2014 | 90° | 59° | 74° | — | — |
| 2013 | 99° | 60° | 79° | — | — |
| 2012 | 90° | 68° | 79° | — | — |
| 2011 | 81° | 55° | 68° | — | — |
| 2010coldest | 76° | 51° | 63° | — | — |
| 2009 | 75° | 56° | 65° | — | — |
| 2008 | 86° | 61° | 73° | — | — |
| 2007 | 91° | 64° | 78° | — | — |
| 2006 | 77° | 55° | 66° | — | — |
| 2005 | 73° | 59° | 66° | — | — |
| 2004 | 82° | 59° | 71° | — | — |
| 2003 | 93° | 66° | 80° | — | — |
| 2002 | 75° | 57° | 66° | — | — |
| 2001 | 103° | 70° | 86° | — | — |
| 2000 | 99° | 68° | 83° | — | — |
| 1999 | 89° | 60° | 75° | — | — |
| 1998 | 99° | 67° | 83° | — | — |
| 1997 | 91° | 59° | 75° | — | — |
| 1996 | 107° | 69° | 88° | — | — |
30 years of data from SIMI VALLEY CALIFORNIA