Weather on May 17
Simi Valley, CA
55 Years of Data
Avg High
76°F
Avg Low
56°F
Warmest
2006
141°F avg
Coldest
2011
53°F avg
About This Date
May 17th in Simi Valley, CA typically brings pleasant spring weather, with average highs around 76°F and lows near 56°F. Over 30 years of records, the warmest May 17th was in 2006 (141°F average), while the coldest was 2011 (53°F) — a 88°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 17th in Simi Valley, CA? Great weather for outdoor activities.
Cooling Trend
2.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 56° | 50° | 53° | — | — |
| 2024 | 72° | 53° | 62° | — | — |
| 2023 | 85° | 54° | 69° | — | — |
| 2022 | 77° | 50° | 64° | — | — |
| 2021 | 74° | 51° | 62° | — | — |
| 2020 | 81° | 55° | 68° | — | — |
| 2019 | 68° | 48° | 58° | — | — |
| 2018 | 73° | 50° | 62° | — | — |
| 2017 | 71° | 47° | 59° | — | — |
| 2016 | 75° | 53° | 64° | — | — |
| 2015 | 69° | 51° | 60° | — | — |
| 2014 | 91° | 63° | 77° | — | — |
| 2013 | 74° | 53° | 63° | — | — |
| 2012 | 75° | 54° | 64° | — | — |
| 2011coldest | 61° | 46° | 53° | — | — |
| 2010 | 59° | 53° | 56° | — | — |
| 2009 | 79° | 55° | 67° | — | — |
| 2008 | 93° | 68° | 81° | — | — |
| 2007 | 70° | 48° | 59° | — | — |
| 2006warmest | 144° | 138° | 141° | — | — |
| 2005 | 70° | 52° | 61° | — | — |
| 2004 | 70° | 55° | 62° | — | — |
| 2003 | 72° | 55° | 63° | — | — |
| 2002 | 70° | 50° | 60° | — | — |
| 2001 | 83° | 54° | 68° | — | — |
| 2000 | 71° | 49° | 60° | — | — |
| 1999 | 84° | 54° | 69° | — | — |
| 1998 | 73° | 51° | 62° | — | — |
| 1997 | 60° | 59° | 60° | — | — |
| 1996 | 77° | 52° | 64° | — | — |
30 years of data from SIMI VALLEY CALIFORNIA