Weather on May 20
Lancaster, CA
55 Years of Data
Avg High
80°F
Avg Low
53°F
Warmest
2001
83°F avg
Coldest
1972
51°F avg
About This Date
May 20th in Lancaster, CA typically brings warm spring weather, with average highs around 80°F and lows near 53°F — a 27°F daily swing. Over 55 years of records, the warmest May 20th was in 2001 (83°F average), while the coldest was 1972 (51°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 4% of May 20th dates historically. The last decade has been 2.8°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.8°F cooler on this date compared to 20-30 years ago.
Planning for May 20th in Lancaster, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 91° | 64° | 78° | — | — |
| 2024 | 71° | 55° | 63° | — | — |
| 2023 | 93° | 65° | 79° | — | — |
| 2022 | 79° | 57° | 68° | — | — |
| 2021 | 68° | 51° | 60° | — | — |
| 2020 | 78° | 51° | 65° | — | — |
| 2019 | 62° | 44° | 53° | — | — |
| 2018 | 80° | 57° | 69° | — | — |
| 2017 | 91° | 47° | 69° | — | — |
| 2016 | 68° | 50° | 59° | — | — |
| 2015 | 74° | 53° | 63° | — | — |
| 2014 | 67° | 50° | 58° | — | — |
| 2013 | 88° | 50° | 69° | — | — |
| 2012 | 96° | 54° | 75° | — | — |
| 2011 | 83° | 49° | 66° | — | — |
| 2010 | 74° | 56° | 65° | — | — |
| 2009 | 91° | 56° | 73° | — | — |
| 2008 | 90° | 67° | 78° | — | — |
| 2007 | 91° | 59° | 75° | — | — |
| 2006 | 83° | 57° | 70° | — | — |
| 2005 | 93° | 58° | 75° | — | — |
| 2004 | 75° | 54° | 64° | — | — |
| 2003 | 94° | 48° | 71° | — | — |
| 2002 | 63° | 45° | 54° | 0.05" | — |
| 2001warmest | 99° | 68° | 83° | — | — |
| 2000 | 94° | 59° | 76° | — | — |
| 1999 | 74° | 52° | 63° | — | — |
| 1998 | 73° | 49° | 61° | — | — |
| 1997 | 88° | 65° | 76° | — | — |
| 1996 | 83° | 53° | 68° | — | — |
| 1995 | 82° | 49° | 65° | — | — |
| 1994 | 75° | 48° | 62° | — | — |
| 1993 | 74° | 59° | 66° | — | — |
| 1992 | 74° | 54° | 64° | — | — |
| 1991 | 73° | 43° | 58° | — | — |
| 1990 | 72° | 50° | 61° | — | — |
| 1989 | 87° | 58° | 72° | — | — |
| 1988 | 90° | 49° | 69° | — | — |
| 1987 | 60° | 47° | 53° | — | — |
| 1986 | 85° | 62° | 73° | — | — |
| 1985 | 84° | 61° | 72° | — | — |
| 1984 | 93° | 67° | 80° | — | — |
| 1983 | 88° | 52° | 70° | — | — |
| 1982 | 86° | 50° | 68° | — | — |
| 1981 | 64° | 45° | 54° | 0.1" | — |
| 1980 | 89° | 54° | 71° | — | — |
| 1979 | 73° | 55° | 64° | — | — |
| 1978 | 86° | 52° | 69° | — | — |
| 1977 | 82° | 49° | 65° | — | — |
| 1976 | 78° | 54° | 66° | — | — |
| 1975 | 56° | 47° | 51° | — | — |
| 1974 | 75° | 44° | 60° | — | — |
| 1973 | 85° | 55° | 70° | — | — |
| 1972coldest | 62° | 40° | 51° | — | — |
| 1971 | 80° | 52° | 66° | — | — |
55 years of data from LANCASTER