Weather on April 20
Simi Valley, CA
55 Years of Data
Avg High
73°F
Avg Low
52°F
Warmest
2009
83°F avg
Coldest
2007
49°F avg
About This Date
April 20th in Simi Valley, CA typically brings pleasant spring weather, with average highs around 73°F and lows near 52°F. Over 30 years of records, the warmest April 20th was in 2009 (83°F average), while the coldest was 2007 (49°F) — a 34°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 April 20th in Simi Valley, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 78° | 51° | 65° | — | — |
| 2024 | 71° | 49° | 60° | — | — |
| 2023 | 78° | 54° | 66° | — | — |
| 2022 | 71° | 46° | 59° | — | — |
| 2021 | 78° | 50° | 64° | — | — |
| 2020 | 64° | 49° | 56° | — | — |
| 2019 | 63° | 49° | 56° | — | — |
| 2018 | 73° | 46° | 60° | — | — |
| 2017 | 78° | 56° | 67° | — | — |
| 2016 | 85° | 60° | 72° | — | — |
| 2015 | 76° | 47° | 61° | — | — |
| 2014 | 80° | 54° | 67° | — | — |
| 2013 | 90° | 64° | 77° | — | — |
| 2012 | 91° | 54° | 72° | — | — |
| 2011 | 61° | 50° | 55° | — | — |
| 2010 | 61° | 46° | 53° | — | — |
| 2009warmest | 95° | 72° | 83° | — | — |
| 2008 | 61° | 43° | 52° | — | — |
| 2007coldest | 52° | 46° | 49° | — | — |
| 2006 | 73° | 50° | 62° | — | — |
| 2005 | 64° | 45° | 54° | — | — |
| 2004 | 66° | 50° | 58° | — | — |
| 2003 | 72° | 52° | 62° | — | — |
| 2002 | 66° | 41° | 54° | — | — |
| 2001 | 58° | 42° | 50° | — | — |
| 2000 | 78° | 55° | 67° | — | — |
| 1999 | 80° | 59° | 70° | — | — |
| 1998 | 87° | 59° | 73° | — | — |
| 1997 | 86° | 59° | 73° | — | — |
| 1996 | 67° | 50° | 58° | — | — |
30 years of data from SIMI VALLEY CALIFORNIA