Weather on June 21
Pomona, CA
55 Years of Data
Avg High
85°F
Avg Low
57°F
Warmest
1973
85°F avg
Coldest
1975
60°F avg
About This Date
June 21st in Pomona, CA typically brings warm summer weather, with average highs around 85°F and lows near 57°F — a 28°F daily swing. Over 51 years of records, the warmest June 21st was in 1973 (85°F average), while the coldest was 1975 (60°F) — a 25°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
Planning for June 21st in Pomona, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 73° | 58° | 65° | — | — |
| 2024 | 90° | 58° | 74° | — | — |
| 2023 | 80° | 53° | 67° | — | — |
| 2022 | 93° | 64° | 79° | — | — |
| 2021 | 88° | 57° | 72° | — | — |
| 2020 | 81° | 57° | 69° | — | — |
| 2019 | 65° | 56° | 60° | — | — |
| 2018 | 87° | 55° | 71° | — | — |
| 2017 | 96° | 69° | 83° | — | — |
| 2016 | 92° | 67° | 79° | — | — |
| 2015 | 87° | 61° | 74° | — | — |
| 2014 | 89° | 57° | 73° | — | — |
| 2013 | 84° | 56° | 70° | — | — |
| 2012 | 83° | 60° | 71° | — | — |
| 2011 | 93° | 59° | 76° | — | — |
| 2010 | 76° | 51° | 63° | — | — |
| 2009 | 87° | 62° | 75° | — | — |
| 2008 | 108° | 53° | 80° | — | — |
| 2007 | 93° | 58° | 75° | — | — |
| 2006 | 91° | 57° | 74° | — | — |
| 2005 | 95° | 57° | 76° | — | — |
| 2004 | 78° | 59° | 69° | — | — |
| 2003 | 69° | 56° | 62° | — | — |
| 2002 | 83° | 61° | 72° | — | — |
| 2001 | 96° | 64° | 80° | — | — |
| 2000 | 87° | 56° | 71° | — | — |
| 1999 | 77° | 53° | 65° | — | — |
| 1998 | 83° | 56° | 69° | — | — |
| 1993 | 81° | 57° | 69° | — | — |
| 1992 | 81° | 50° | 65° | — | — |
| 1991 | 74° | 55° | 64° | — | — |
| 1990 | 86° | 59° | 73° | — | — |
| 1989 | 94° | 54° | 74° | — | — |
| 1988 | 84° | 52° | 68° | — | — |
| 1987 | 78° | 56° | 67° | — | — |
| 1986 | 85° | 49° | 67° | — | — |
| 1985 | 79° | 54° | 66° | — | — |
| 1984 | 85° | 54° | 69° | — | — |
| 1983 | 80° | 59° | 70° | — | — |
| 1982 | 69° | 60° | 65° | — | — |
| 1981 | 92° | 58° | 75° | — | — |
| 1980 | 86° | 50° | 68° | — | — |
| 1979 | 83° | 54° | 68° | — | — |
| 1978 | 92° | 52° | 72° | — | — |
| 1977 | 78° | 55° | 67° | — | — |
| 1976 | 88° | 52° | 70° | — | — |
| 1975coldest | 74° | 47° | 60° | — | — |
| 1974 | 89° | 54° | 71° | — | — |
| 1973warmest | 105° | 65° | 85° | — | — |
| 1972 | 89° | 60° | 75° | — | — |
| 1971 | 94° | 57° | 75° | — | — |
51 years of data from POMONA/FAIRPLEX