Weather on May 4
Simi Valley, CA
55 Years of Data
Avg High
78°F
Avg Low
56°F
Warmest
2006
126°F avg
Coldest
2007
53°F avg
About This Date
May 4th in Simi Valley, CA typically brings pleasant spring weather, with average highs around 78°F and lows near 56°F. Over 30 years of records, the warmest May 4th was in 2006 (126°F average), while the coldest was 2007 (53°F) — a 73°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
Planning for May 4th in Simi Valley, CA? Great weather for outdoor activities.
Cooling Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 61° | 50° | 55° | — | — |
| 2024 | 62° | 50° | 56° | — | — |
| 2023 | 61° | 45° | 53° | — | — |
| 2022 | 90° | 53° | 71° | — | — |
| 2021 | 90° | 55° | 72° | — | — |
| 2020 | 89° | 64° | 77° | — | — |
| 2019 | 78° | 52° | 65° | — | — |
| 2018 | 90° | 59° | 74° | — | — |
| 2017 | 88° | 58° | 73° | — | — |
| 2016 | 73° | 51° | 62° | — | — |
| 2015 | 73° | 49° | 61° | — | — |
| 2014 | 86° | 56° | 71° | — | — |
| 2013 | 82° | 52° | 67° | — | — |
| 2012 | 68° | 48° | 58° | — | — |
| 2011 | 91° | 63° | 77° | — | — |
| 2010 | 77° | 52° | 64° | — | — |
| 2009 | 75° | 55° | 65° | — | — |
| 2008 | 66° | 45° | 55° | — | — |
| 2007coldest | 59° | 46° | 53° | — | — |
| 2006warmest | 129° | 122° | 126° | — | — |
| 2005 | 68° | 54° | 61° | — | — |
| 2004 | 88° | 64° | 76° | — | — |
| 2003 | 64° | 50° | 57° | — | — |
| 2002 | 66° | 46° | 56° | — | — |
| 2001 | 81° | 58° | 69° | — | — |
| 2000 | 78° | 56° | 67° | — | — |
| 1999 | 69° | 46° | 58° | — | — |
| 1998 | 67° | 52° | 59° | — | — |
| 1997 | 88° | 62° | 75° | — | — |
| 1996 | 82° | 53° | 68° | — | — |
30 years of data from SIMI VALLEY CALIFORNIA