Weather on December 22
Simi Valley, CA
55 Years of Data
Avg High
62°F
Avg Low
49°F
Warmest
2014
70°F avg
Coldest
1998
44°F avg
About This Date
December 22nd in Simi Valley, CA typically brings mild winter weather, with average highs around 62°F and lows near 49°F. Over 31 years of records, the warmest December 22nd was in 2014 (70°F average), while the coldest was 1998 (44°F) — a 26°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.
Planning for December 22nd in Simi Valley, CA? Great weather for outdoor activities.
Warming Trend
3.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 72° | 56° | 64° | — | — |
| 2024 | 67° | 56° | 61° | — | — |
| 2023 | 61° | 53° | 57° | — | — |
| 2022 | 67° | 56° | 61° | — | — |
| 2021 | 63° | 51° | 57° | — | — |
| 2020 | 72° | 52° | 62° | — | — |
| 2019 | 62° | 45° | 53° | — | — |
| 2018 | 67° | 55° | 61° | — | — |
| 2017 | 62° | 46° | 54° | — | — |
| 2016 | 64° | 47° | 55° | — | — |
| 2015 | 57° | 51° | 54° | — | — |
| 2014warmest | 77° | 63° | 70° | — | — |
| 2013 | 69° | 46° | 58° | — | — |
| 2012 | 60° | 45° | 52° | — | — |
| 2011 | 59° | 48° | 54° | — | — |
| 2010 | 56° | 51° | 53° | — | — |
| 2009 | 56° | 41° | 48° | — | — |
| 2008 | 52° | 41° | 46° | — | — |
| 2007 | 61° | 48° | 54° | — | — |
| 2006 | 59° | 43° | 51° | — | — |
| 2005 | 72° | 54° | 63° | — | — |
| 2004 | 61° | 52° | 56° | — | — |
| 2003 | 68° | 45° | 56° | — | — |
| 2002 | 57° | 46° | 52° | — | — |
| 2001 | 57° | 39° | 48° | — | — |
| 2000 | 68° | 51° | 60° | — | — |
| 1999 | 64° | 54° | 59° | — | — |
| 1998coldest | 54° | 35° | 44° | — | — |
| 1997 | 56° | 41° | 48° | — | — |
| 1996 | 58° | 48° | 53° | — | — |
| 1995 | 56° | 45° | 50° | — | — |
31 years of data from SIMI VALLEY CALIFORNIA