Weather on May 9
Simi Valley, CA
55 Years of Data
Avg High
75°F
Avg Low
55°F
Warmest
2006
120°F avg
Coldest
2003
52°F avg
About This Date
May 9th in Simi Valley, CA typically brings pleasant spring weather, with average highs around 75°F and lows near 55°F. Over 30 years of records, the warmest May 9th was in 2006 (120°F average), while the coldest was 2003 (52°F) — a 68°F range across recorded history. This date has historically been dry, with little recorded precipitation. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for May 9th in Simi Valley, CA? Great weather for outdoor activities.
Cooling Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 98° | 67° | 82° | — | — |
| 2024 | 79° | 51° | 65° | — | — |
| 2023 | 65° | 47° | 56° | — | — |
| 2022 | 70° | 47° | 58° | — | — |
| 2021 | 76° | 52° | 64° | — | — |
| 2020 | 87° | 59° | 73° | — | — |
| 2019 | 62° | 52° | 57° | — | — |
| 2018 | 84° | 55° | 70° | — | — |
| 2017 | 64° | 50° | 57° | — | — |
| 2016 | 69° | 51° | 60° | — | — |
| 2015 | 66° | 49° | 57° | — | — |
| 2014 | 73° | 52° | 62° | — | — |
| 2013 | 76° | 52° | 64° | — | — |
| 2012 | 82° | 57° | 70° | — | — |
| 2011 | 63° | 46° | 54° | — | — |
| 2010 | 63° | 49° | 56° | — | — |
| 2009 | 75° | 50° | 63° | — | — |
| 2008 | 59° | 48° | 54° | — | — |
| 2007 | 88° | 57° | 72° | — | — |
| 2006warmest | 124° | 117° | 120° | — | — |
| 2005 | 64° | 50° | 57° | — | — |
| 2004 | 79° | 57° | 68° | — | — |
| 2003coldest | 61° | 43° | 52° | — | — |
| 2002 | 70° | 48° | 59° | — | — |
| 2001 | 91° | 61° | 76° | — | — |
| 2000 | 79° | 56° | 67° | — | — |
| 1999 | 67° | 49° | 58° | — | — |
| 1998 | 61° | 50° | 55° | — | — |
| 1997 | 89° | 60° | 75° | — | — |
| 1996 | 79° | 53° | 66° | — | — |
30 years of data from SIMI VALLEY CALIFORNIA