Weather on February 18
Simi Valley, CA
55 Years of Data
Avg High
63°F
Avg Low
46°F
Warmest
2015
64°F avg
Coldest
2006
44°F avg
About This Date
February 18th in Simi Valley, CA typically brings mild winter weather, with average highs around 63°F and lows near 46°F. Over 30 years of records, the warmest February 18th was in 2015 (64°F average), while the coldest was 2006 (44°F) — a 20°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
Planning for February 18th in Simi Valley, CA? Great weather for outdoor activities.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 54° | 40° | 47° | — | — |
| 2025 | 70° | 48° | 59° | — | — |
| 2024 | 57° | 48° | 53° | — | — |
| 2023 | 61° | 49° | 55° | — | — |
| 2022 | 72° | 54° | 63° | — | — |
| 2021 | 64° | 49° | 56° | — | — |
| 2020 | 76° | 50° | 63° | — | — |
| 2019 | 51° | 37° | 44° | — | — |
| 2018 | 66° | 45° | 55° | — | — |
| 2017 | 51° | 46° | 49° | — | — |
| 2016 | 62° | 48° | 55° | — | — |
| 2015warmest | 77° | 51° | 64° | — | — |
| 2014 | 72° | 47° | 59° | — | — |
| 2013 | 65° | 45° | 55° | — | — |
| 2012 | 61° | 43° | 52° | — | — |
| 2011 | 54° | 45° | 49° | — | — |
| 2010 | 67° | 48° | 57° | — | — |
| 2009 | 61° | 39° | 50° | — | — |
| 2008 | 61° | 45° | 53° | — | — |
| 2007 | 72° | 54° | 63° | — | — |
| 2006coldest | 50° | 37° | 44° | — | — |
| 2005 | 57° | 52° | 54° | — | — |
| 2004 | 52° | 46° | 49° | — | — |
| 2003 | 66° | 46° | 56° | — | — |
| 2002 | 57° | 36° | 46° | — | — |
| 2001 | 53° | 46° | 50° | — | — |
| 2000 | 68° | 45° | 56° | — | — |
| 1999 | 60° | 49° | 54° | — | — |
| 1998 | 66° | 46° | 56° | — | — |
| 1997 | 72° | 49° | 60° | — | — |
30 years of data from SIMI VALLEY CALIFORNIA