Weather on February 21
Simi Valley, CA
55 Years of Data
Avg High
63°F
Avg Low
48°F
Warmest
2002
73°F avg
Coldest
2019
43°F avg
About This Date
February 21st in Simi Valley, CA typically brings mild winter weather, with average highs around 63°F and lows near 48°F. Over 29 years of records, the warmest February 21st was in 2002 (73°F average), while the coldest was 2019 (43°F) — a 30°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 2.5°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.5°F cooler on this date compared to 20-30 years ago.
Planning for February 21st in Simi Valley, CA? Great weather for outdoor activities.
Cooling Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 46° | 45° | 45° | — | — |
| 2025 | 72° | 60° | 66° | — | — |
| 2024 | 63° | 46° | 54° | — | — |
| 2023 | 61° | 42° | 51° | — | — |
| 2022 | 58° | 44° | 51° | — | — |
| 2021 | 67° | 49° | 58° | — | — |
| 2020 | 74° | 51° | 62° | — | — |
| 2019coldest | 49° | 38° | 43° | — | — |
| 2018 | 60° | 40° | 50° | — | — |
| 2017 | 58° | 50° | 54° | — | — |
| 2015 | 66° | 50° | 58° | — | — |
| 2014 | 83° | 61° | 72° | — | — |
| 2013 | 60° | 39° | 50° | — | — |
| 2012 | 72° | 52° | 62° | — | — |
| 2011 | 55° | 37° | 46° | — | — |
| 2010 | 57° | 47° | 52° | — | — |
| 2009 | 70° | 54° | 62° | — | — |
| 2008 | 57° | 46° | 52° | — | — |
| 2007 | 64° | 43° | 53° | — | — |
| 2006 | 59° | 45° | 52° | — | — |
| 2005 | 61° | 50° | 55° | — | — |
| 2004 | 52° | 45° | 48° | — | — |
| 2003 | 75° | 48° | 62° | — | — |
| 2002warmest | 82° | 64° | 73° | — | — |
| 2001 | 59° | 43° | 51° | — | — |
| 2000 | 49° | 43° | 46° | — | — |
| 1999 | 60° | 47° | 53° | — | — |
| 1998 | 59° | 45° | 52° | — | — |
| 1997 | 73° | 54° | 63° | — | — |
29 years of data from SIMI VALLEY CALIFORNIA