Weather on January 15
Simi Valley, CA
55 Years of Data
Avg High
66°F
Avg Low
52°F
Warmest
2021
77°F avg
Coldest
1997
44°F avg
About This Date
January 15th in Simi Valley, CA typically brings mild winter weather, with average highs around 66°F and lows near 52°F. Over 31 years of records, the warmest January 15th was in 2021 (77°F average), while the coldest was 1997 (44°F) — a 33°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 January 15th in Simi Valley, CA? Great weather for outdoor activities.
Warming Trend
1.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 76° | 66° | 71° | — | — |
| 2025 | 67° | 52° | 59° | — | — |
| 2024 | 68° | 47° | 57° | — | — |
| 2023 | 53° | 45° | 49° | — | — |
| 2022 | 65° | 53° | 59° | — | — |
| 2021warmest | 83° | 72° | 77° | — | — |
| 2020 | 64° | 45° | 54° | — | — |
| 2019 | 51° | 46° | 49° | — | — |
| 2018 | 76° | 57° | 66° | — | — |
| 2017 | 58° | 46° | 52° | — | — |
| 2016 | 57° | 46° | 52° | — | — |
| 2015 | 67° | 54° | 60° | — | — |
| 2014 | 80° | 69° | 75° | — | — |
| 2013 | 57° | 38° | 47° | — | — |
| 2012 | 63° | 45° | 54° | — | — |
| 2011 | 78° | 67° | 72° | — | — |
| 2010 | 70° | 57° | 63° | — | — |
| 2009 | 79° | 68° | 73° | — | — |
| 2008 | 68° | 50° | 59° | — | — |
| 2007 | 55° | 41° | 48° | — | — |
| 2006 | 55° | 39° | 47° | — | — |
| 2005 | 72° | 57° | 64° | — | — |
| 2004 | 73° | 55° | 64° | — | — |
| 2003 | 73° | 50° | 62° | — | — |
| 2002 | 57° | 50° | 54° | — | — |
| 2001 | 55° | 41° | 48° | — | — |
| 2000 | 74° | 58° | 66° | — | — |
| 1999 | 76° | 59° | 67° | — | — |
| 1998 | 55° | 49° | 52° | — | — |
| 1997coldest | 49° | 40° | 44° | — | — |
| 1996 | 72° | 53° | 62° | — | — |
31 years of data from SIMI VALLEY CALIFORNIA