Weather on May 12
Simi Valley, CA
55 Years of Data
Avg High
80°F
Avg Low
56°F
Warmest
2006
134°F avg
Coldest
1998
46°F avg
About This Date
May 12th in Simi Valley, CA typically brings warm spring weather, with average highs around 80°F and lows near 56°F. Over 30 years of records, the warmest May 12th was in 2006 (134°F average), while the coldest was 1998 (46°F) — a 88°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 1.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.1°F cooler on this date compared to 20-30 years ago.
Planning for May 12th in Simi Valley, CA? Stay hydrated and seek shade during peak afternoon hours.
Cooling Trend
1.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 75° | 48° | 62° | — | — |
| 2024 | 80° | 52° | 66° | — | — |
| 2023 | 77° | 51° | 64° | — | — |
| 2022 | 82° | 55° | 69° | — | — |
| 2021 | 83° | 53° | 68° | — | — |
| 2020 | 71° | 48° | 60° | — | — |
| 2019 | 81° | 54° | 67° | — | — |
| 2018 | 62° | 51° | 57° | — | — |
| 2017 | 81° | 52° | 66° | — | — |
| 2016 | 90° | 57° | 73° | — | — |
| 2015 | 73° | 51° | 62° | — | — |
| 2014 | 88° | 62° | 75° | — | — |
| 2013 | 101° | 67° | 84° | — | — |
| 2012 | 68° | 50° | 59° | — | — |
| 2011 | 75° | 50° | 63° | — | — |
| 2010 | 75° | 50° | 63° | — | — |
| 2009 | 70° | 50° | 60° | — | — |
| 2008 | 63° | 50° | 56° | — | — |
| 2007 | 68° | 45° | 56° | — | — |
| 2006warmest | 136° | 131° | 134° | — | — |
| 2005 | 79° | 57° | 68° | — | — |
| 2004 | 70° | 52° | 61° | — | — |
| 2003 | 77° | 52° | 64° | — | — |
| 2002 | 88° | 54° | 71° | — | — |
| 2001 | 77° | 53° | 65° | — | — |
| 2000 | 80° | 56° | 68° | — | — |
| 1999 | 81° | 53° | 67° | — | — |
| 1998coldest | 49° | 43° | 46° | — | — |
| 1997 | 88° | 56° | 72° | — | — |
| 1996 | 97° | 65° | 81° | — | — |
30 years of data from SIMI VALLEY CALIFORNIA