Weather on May 1
Simi Valley, CA
55 Years of Data
Avg High
76°F
Avg Low
50°F
Warmest
2014
80°F avg
Coldest
2006
28°F avg
About This Date
May 1st in Simi Valley, CA typically brings pleasant spring weather, with average highs around 76°F and lows near 50°F — a 26°F daily swing. Over 30 years of records, the warmest May 1st was in 2014 (80°F average), while the coldest was 2006 (28°F) — a 52°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
Planning for May 1st in Simi Valley, CA? Great weather for outdoor activities.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 73° | 50° | 62° | — | — |
| 2024 | 75° | 50° | 63° | — | — |
| 2023 | 65° | 46° | 55° | — | — |
| 2022 | 79° | 52° | 65° | — | — |
| 2021 | 83° | 53° | 68° | — | — |
| 2020 | 83° | 58° | 70° | — | — |
| 2019 | 71° | 47° | 59° | — | — |
| 2018 | 53° | 47° | 50° | — | — |
| 2017 | 88° | 60° | 74° | — | — |
| 2016 | 76° | 50° | 63° | — | — |
| 2015 | 89° | 67° | 78° | — | — |
| 2014warmest | 90° | 70° | 80° | — | — |
| 2013 | 83° | 52° | 67° | — | — |
| 2012 | 57° | 54° | 55° | — | — |
| 2011 | 79° | 57° | 68° | — | — |
| 2010 | 74° | 55° | 64° | — | — |
| 2009 | 72° | 52° | 62° | — | — |
| 2008 | 73° | 52° | 62° | — | — |
| 2007 | 68° | 50° | 59° | — | — |
| 2006coldest | 97° | -40° | 28° | — | — |
| 2005 | 66° | 50° | 58° | — | — |
| 2004 | 88° | 57° | 72° | — | — |
| 2003 | 66° | 46° | 56° | — | — |
| 2002 | 61° | 46° | 53° | — | — |
| 2001 | 80° | 52° | 66° | — | — |
| 2000 | 85° | 64° | 74° | — | — |
| 1999 | 66° | 44° | 55° | — | — |
| 1998 | 68° | 48° | 58° | — | — |
| 1997 | 85° | 58° | 71° | — | — |
| 1996 | 92° | 60° | 76° | — | — |
30 years of data from SIMI VALLEY CALIFORNIA