Weather on January 18
Simi Valley, CA
55 Years of Data
Avg High
66°F
Avg Low
51°F
Warmest
2011
72°F avg
Coldest
2006
48°F avg
About This Date
January 18th in Simi Valley, CA typically brings mild winter weather, with average highs around 66°F and lows near 51°F. Over 31 years of records, the warmest January 18th was in 2011 (72°F average), while the coldest was 2006 (48°F) — a 24°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 1.8°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.8°F cooler on this date compared to 20-30 years ago.
Planning for January 18th in Simi Valley, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 74° | 61° | 67° | — | — |
| 2025 | 64° | 44° | 54° | — | — |
| 2024 | 63° | 47° | 55° | — | — |
| 2023 | 57° | 41° | 49° | — | — |
| 2022 | 61° | 50° | 55° | — | — |
| 2021 | 75° | 56° | 65° | — | — |
| 2020 | 64° | 48° | 56° | — | — |
| 2019 | 63° | 49° | 56° | — | — |
| 2018 | 78° | 58° | 68° | — | — |
| 2017 | 55° | 45° | 50° | — | — |
| 2016 | 56° | 50° | 53° | — | — |
| 2015 | 72° | 60° | 66° | — | — |
| 2014 | 81° | 62° | 71° | — | — |
| 2013 | 72° | 55° | 63° | — | — |
| 2012 | 64° | 37° | 51° | — | — |
| 2011warmest | 83° | 62° | 72° | — | — |
| 2010 | 54° | 46° | 50° | — | — |
| 2009 | 75° | 66° | 71° | — | — |
| 2008 | 63° | 52° | 57° | — | — |
| 2007 | 64° | 48° | 56° | — | — |
| 2006coldest | 54° | 43° | 48° | — | — |
| 2005 | 73° | 66° | 70° | — | — |
| 2004 | 59° | 43° | 51° | — | — |
| 2003 | 81° | 55° | 68° | — | — |
| 2002 | 61° | 46° | 53° | — | — |
| 2001 | 62° | 49° | 55° | — | — |
| 2000 | 68° | 57° | 63° | — | — |
| 1999 | 58° | 49° | 53° | — | — |
| 1998 | 66° | 49° | 57° | — | — |
| 1997 | 74° | 52° | 63° | — | — |
| 1996 | 65° | 47° | 56° | — | — |
31 years of data from SIMI VALLEY CALIFORNIA