Weather on April 17
Simi Valley, CA
55 Years of Data
Avg High
71°F
Avg Low
51°F
Warmest
1999
79°F avg
Coldest
2000
49°F avg
About This Date
April 17th in Simi Valley, CA typically brings pleasant spring weather, with average highs around 71°F and lows near 51°F. Over 30 years of records, the warmest April 17th was in 1999 (79°F average), while the coldest was 2000 (49°F) — a 30°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 1.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.1°F warmer on this date compared to 20-30 years ago.
Planning for April 17th in Simi Valley, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 57° | 48° | 53° | — | — |
| 2024 | 81° | 57° | 69° | — | — |
| 2023 | 62° | 47° | 54° | — | — |
| 2022 | 74° | 49° | 61° | — | — |
| 2021 | 75° | 49° | 62° | — | — |
| 2020 | 64° | 48° | 56° | — | — |
| 2019 | 78° | 52° | 65° | — | — |
| 2018 | 68° | 42° | 55° | — | — |
| 2017 | 71° | 53° | 62° | — | — |
| 2016 | 85° | 65° | 75° | — | — |
| 2015 | 79° | 59° | 69° | — | — |
| 2014 | 75° | 50° | 63° | — | — |
| 2013 | 70° | 48° | 59° | — | — |
| 2012 | 77° | 55° | 66° | — | — |
| 2011 | 73° | 54° | 63° | — | — |
| 2010 | 70° | 47° | 58° | — | — |
| 2009 | 75° | 48° | 62° | — | — |
| 2008 | 82° | 54° | 68° | — | — |
| 2007 | 64° | 48° | 56° | — | — |
| 2006 | 63° | 48° | 55° | — | — |
| 2005 | 68° | 50° | 59° | — | — |
| 2004 | 57° | 46° | 52° | — | — |
| 2003 | 59° | 45° | 52° | — | — |
| 2002 | 59° | 45° | 52° | — | — |
| 2001 | 80° | 55° | 68° | — | — |
| 2000coldest | 52° | 46° | 49° | — | — |
| 1999warmest | 88° | 70° | 79° | — | — |
| 1998 | 75° | 51° | 63° | — | — |
| 1997 | 82° | 55° | 69° | — | — |
| 1996 | 67° | 49° | 58° | — | — |
30 years of data from SIMI VALLEY CALIFORNIA