Weather on July 21
Palmdale, CA
55 Years of Data
Avg High
83°F
Avg Low
65°F
Warmest
1991
97°F avg
Coldest
1987
52°F avg
About This Date
July 21st in Palmdale, CA typically brings warm summer weather, with average highs around 83°F and lows near 65°F. Over 39 years of records, the warmest July 21st was in 1991 (97°F average), while the coldest was 1987 (52°F) — a 45°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 3.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.4°F warmer on this date compared to 20-30 years ago.
Planning for July 21st in Palmdale, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 76° | 57° | 66° | — | — |
| 2024 | 91° | 74° | 82° | — | — |
| 2023 | 90° | 75° | 82° | — | — |
| 2022 | 89° | 73° | 81° | — | — |
| 2021 | 88° | 71° | 79° | — | — |
| 2020 | 83° | 64° | 73° | — | — |
| 2019 | 87° | 62° | 75° | — | — |
| 2018 | 83° | 64° | 73° | — | — |
| 2017 | 81° | 66° | 73° | — | — |
| 2016 | 88° | 71° | 79° | — | — |
| 2015 | 76° | 57° | 66° | — | — |
| 2014 | 77° | 59° | 68° | — | — |
| 2013 | 77° | 62° | 70° | — | — |
| 2012 | 86° | 68° | 77° | — | — |
| 2011 | 79° | 61° | 70° | — | — |
| 2010 | 83° | 67° | 75° | — | — |
| 2009 | 88° | 71° | 79° | — | — |
| 2008 | 81° | 62° | 71° | — | — |
| 2007 | 87° | 63° | 75° | — | — |
| 2006 | 91° | 74° | 82° | — | — |
| 2005 | 88° | 69° | 78° | — | — |
| 2004 | 84° | 66° | 75° | — | — |
| 2003 | 87° | 68° | 78° | — | — |
| 2002 | 83° | 61° | 72° | — | — |
| 2001 | 75° | 54° | 64° | — | — |
| 2000 | 88° | 69° | 78° | — | — |
| 1999 | 74° | 55° | 64° | — | — |
| 1998 | 77° | 64° | 71° | — | — |
| 1997 | 83° | 66° | 74° | — | — |
| 1996 | 87° | 64° | 75° | — | — |
| 1995 | 73° | 56° | 64° | — | — |
| 1994 | 79° | 63° | 71° | — | — |
| 1993 | 87° | 67° | 77° | — | — |
| 1992 | 89° | 65° | 77° | — | — |
| 1991warmest | 122° | 73° | 97° | — | — |
| 1990 | 82° | 68° | 75° | — | — |
| 1989 | 82° | 66° | 74° | — | — |
| 1987coldest | 61° | 43° | 52° | — | — |
| 1986 | 65° | 58° | 62° | — | — |
39 years of data from MILL CREEK (ANF) CALIFORNIA