Weather on May 15
Lancaster, CA
55 Years of Data
Avg High
81°F
Avg Low
54°F
Warmest
1997
79°F avg
Coldest
2011
51°F avg
About This Date
May 15th in Lancaster, CA typically brings warm spring weather, with average highs around 81°F and lows near 54°F — a 27°F daily swing. Over 55 years of records, the warmest May 15th was in 1997 (79°F average), while the coldest was 2011 (51°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 5% of May 15th dates historically. The last decade has been 3.2°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.2°F cooler on this date compared to 20-30 years ago.
Planning for May 15th in Lancaster, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 83° | 46° | 64° | — | — |
| 2024 | 92° | 64° | 78° | 0.05" | — |
| 2023 | 94° | 51° | 72° | — | — |
| 2022 | 92° | 49° | 70° | — | — |
| 2021 | 75° | 53° | 64° | — | — |
| 2020 | 82° | 56° | 69° | — | — |
| 2019 | 74° | 53° | 63° | — | — |
| 2018 | 77° | 54° | 65° | — | — |
| 2017 | 64° | 47° | 55° | — | — |
| 2016 | 77° | 57° | 67° | — | — |
| 2015 | 64° | 43° | 53° | — | — |
| 2014 | 94° | 44° | 69° | — | — |
| 2013 | 91° | 66° | 79° | — | — |
| 2012 | 84° | 55° | 70° | — | — |
| 2011coldest | 60° | 43° | 51° | 0.13" | — |
| 2010 | 86° | 49° | 67° | — | — |
| 2009 | 95° | 61° | 78° | — | — |
| 2008 | 94° | 56° | 75° | — | — |
| 2007 | 91° | 48° | 70° | — | — |
| 2006 | 94° | 64° | 79° | — | — |
| 2005 | 91° | 63° | 77° | — | — |
| 2004 | 87° | 60° | 74° | — | — |
| 2003 | 84° | 57° | 71° | — | — |
| 2002 | 87° | 63° | 75° | — | — |
| 2001 | 90° | 63° | 76° | — | — |
| 2000 | 68° | 50° | 59° | — | — |
| 1999 | 72° | 46° | 59° | — | — |
| 1998 | 71° | 46° | 59° | — | — |
| 1997warmest | 91° | 66° | 79° | — | — |
| 1996 | 79° | 61° | 70° | — | — |
| 1995 | 61° | 43° | 52° | — | — |
| 1994 | 76° | 55° | 65° | — | — |
| 1993 | 81° | 54° | 67° | — | — |
| 1992 | 83° | 58° | 70° | — | — |
| 1991 | 82° | 43° | 62° | — | — |
| 1990 | 76° | 51° | 63° | — | — |
| 1989 | 68° | 50° | 59° | 0.3" | — |
| 1988 | 87° | 49° | 68° | — | — |
| 1987 | 85° | 66° | 75° | — | — |
| 1986 | 81° | 60° | 70° | — | — |
| 1985 | 80° | 53° | 67° | — | — |
| 1984 | 64° | 41° | 53° | — | — |
| 1983 | 79° | 59° | 69° | — | — |
| 1982 | 81° | 56° | 68° | — | — |
| 1981 | 66° | 54° | 60° | — | — |
| 1980 | 74° | 54° | 64° | — | — |
| 1979 | 83° | 49° | 66° | — | — |
| 1978 | 68° | 52° | 60° | — | — |
| 1977 | 66° | 49° | 57° | — | — |
| 1976 | 94° | 57° | 75° | — | — |
| 1975 | 78° | 52° | 65° | — | — |
| 1974 | 72° | 52° | 62° | — | — |
| 1973 | 88° | 48° | 68° | — | — |
| 1972 | 96° | 53° | 75° | — | — |
| 1971 | 87° | 53° | 70° | — | — |
55 years of data from LANCASTER