Weather on June 28
Simi Valley, CA
55 Years of Data
Avg High
86°F
Avg Low
60°F
Warmest
2013
86°F avg
Coldest
2005
62°F avg
About This Date
June 28th in Simi Valley, CA typically brings warm summer weather, with average highs around 86°F and lows near 60°F — a 26°F daily swing. Over 30 years of records, the warmest June 28th was in 2013 (86°F average), while the coldest was 2005 (62°F) — a 24°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 4.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.7°F warmer on this date compared to 20-30 years ago.
Planning for June 28th in Simi Valley, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
2.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 97° | 59° | 78° | — | — |
| 2024 | 88° | 59° | 73° | — | — |
| 2023 | 81° | 52° | 66° | — | — |
| 2022 | 103° | 70° | 86° | — | — |
| 2021 | 102° | 64° | 83° | — | — |
| 2020 | 76° | 57° | 66° | — | — |
| 2019 | 88° | 56° | 72° | — | — |
| 2018 | 82° | 57° | 70° | — | — |
| 2017 | 89° | 58° | 73° | — | — |
| 2016 | 99° | 69° | 84° | — | — |
| 2015 | 98° | 71° | 85° | — | — |
| 2014 | 88° | 59° | 73° | — | — |
| 2013warmest | 102° | 70° | 86° | — | — |
| 2012 | 81° | 57° | 69° | — | — |
| 2011 | 75° | 55° | 65° | — | — |
| 2010 | 77° | 56° | 66° | — | — |
| 2009 | 85° | 58° | 71° | — | — |
| 2008 | 77° | 57° | 67° | — | — |
| 2007 | 81° | 59° | 70° | — | — |
| 2006 | 93° | 70° | 81° | — | — |
| 2005coldest | 72° | 52° | 62° | — | — |
| 2004 | 73° | 61° | 67° | — | — |
| 2003 | 77° | 55° | 66° | — | — |
| 2002 | 82° | 55° | 69° | — | — |
| 2001 | 85° | 65° | 75° | — | — |
| 2000 | 93° | 65° | 79° | — | — |
| 1999 | 91° | 57° | 74° | — | — |
| 1998 | 88° | 61° | 74° | — | — |
| 1997 | 81° | 56° | 68° | — | — |
| 1996 | 88° | 52° | 70° | — | — |
30 years of data from SIMI VALLEY CALIFORNIA