Weather on April 9
Simi Valley, CA
55 Years of Data
Avg High
70°F
Avg Low
49°F
Warmest
2014
77°F avg
Coldest
1999
43°F avg
About This Date
April 9th in Simi Valley, CA typically brings pleasant spring weather, with average highs around 70°F and lows near 49°F. Over 30 years of records, the warmest April 9th was in 2014 (77°F average), while the coldest was 1999 (43°F) — a 34°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 8.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 8.6°F warmer on this date compared to 20-30 years ago.
Planning for April 9th in Simi Valley, CA? Great weather for outdoor activities.
Warming Trend
5.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 83° | 59° | 71° | — | — |
| 2024 | 78° | 56° | 67° | — | — |
| 2023 | 83° | 54° | 68° | — | — |
| 2022 | 89° | 56° | 72° | — | — |
| 2021 | 82° | 52° | 67° | — | — |
| 2020 | 47° | 43° | 45° | — | — |
| 2019 | 76° | 54° | 65° | — | — |
| 2018 | 90° | 65° | 77° | — | — |
| 2017 | 69° | 45° | 57° | — | — |
| 2016 | 56° | 52° | 54° | — | — |
| 2015 | 76° | 52° | 64° | — | — |
| 2014warmest | 88° | 66° | 77° | — | — |
| 2013 | 70° | 49° | 59° | — | — |
| 2012 | 77° | 48° | 63° | — | — |
| 2011 | 55° | 36° | 45° | — | — |
| 2010 | 72° | 51° | 61° | — | — |
| 2009 | 64° | 46° | 55° | — | — |
| 2008 | 63° | 41° | 52° | — | — |
| 2007 | 66° | 48° | 57° | — | — |
| 2006 | 61° | 43° | 52° | — | — |
| 2005 | 64° | 41° | 53° | — | — |
| 2004 | 68° | 52° | 60° | — | — |
| 2003 | 81° | 54° | 67° | — | — |
| 2002 | 66° | 46° | 56° | — | — |
| 2001 | 51° | 39° | 45° | — | — |
| 2000 | 72° | 54° | 63° | — | — |
| 1999coldest | 52° | 35° | 43° | — | — |
| 1998 | 69° | 47° | 58° | — | — |
| 1997 | 63° | 48° | 55° | — | — |
| 1996 | 68° | 46° | 57° | — | — |
30 years of data from SIMI VALLEY CALIFORNIA