Weather on May 9
Pomona, CA
55 Years of Data
Avg High
75°F
Avg Low
52°F
Warmest
2025
78°F avg
Coldest
1977
53°F avg
About This Date
May 9th in Pomona, CA typically brings pleasant spring weather, with average highs around 75°F and lows near 52°F. Over 52 years of records, the warmest May 9th was in 2025 (78°F average), while the coldest was 1977 (53°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 2% of May 9th dates historically, with the wettest May 9th recording 1.85" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for May 9th in Pomona, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 95° | 60° | 78° | — | — |
| 2024 | 77° | 48° | 63° | — | — |
| 2023 | 66° | 48° | 57° | — | — |
| 2022 | 66° | 45° | 55° | — | — |
| 2021 | 73° | 50° | 62° | — | — |
| 2020 | 82° | 56° | 69° | — | — |
| 2019 | 60° | 53° | 57° | — | — |
| 2018 | 83° | 55° | 69° | — | — |
| 2017 | 68° | 48° | 58° | — | — |
| 2016 | 68° | 49° | 58° | — | — |
| 2015 | 62° | 51° | 57° | — | — |
| 2014 | 75° | 48° | 62° | — | — |
| 2013 | 73° | 45° | 59° | — | — |
| 2012 | 88° | 57° | 72° | — | — |
| 2011 | 64° | 52° | 58° | — | — |
| 2010 | 66° | 48° | 57° | — | — |
| 2009 | 94° | 57° | 75° | — | — |
| 2008 | 67° | 51° | 59° | — | — |
| 2007 | 94° | 59° | 76° | — | — |
| 2006 | 71° | 53° | 62° | — | — |
| 2005 | 65° | 52° | 58° | — | — |
| 2004 | 86° | 54° | 70° | — | — |
| 2003 | 71° | 48° | 60° | — | — |
| 2002 | 72° | 54° | 63° | — | — |
| 2001 | 87° | 58° | 72° | — | — |
| 2000 | 79° | 52° | 65° | — | — |
| 1999 | 58° | 49° | 53° | — | — |
| 1995 | 74° | 44° | 59° | — | — |
| 1994 | 75° | 67° | 71° | — | — |
| 1993 | 93° | 55° | 74° | — | — |
| 1992 | 68° | 54° | 61° | — | — |
| 1991 | 74° | 56° | 65° | — | — |
| 1990 | 82° | 51° | 67° | — | — |
| 1989 | 78° | 53° | 66° | — | — |
| 1988 | 81° | 43° | 62° | — | — |
| 1987 | 85° | 59° | 72° | — | — |
| 1986 | 82° | 45° | 63° | — | — |
| 1985 | 66° | 52° | 59° | — | — |
| 1984 | 93° | 55° | 74° | — | — |
| 1983 | 73° | 50° | 62° | — | — |
| 1982 | 63° | 52° | 57° | — | — |
| 1981 | 92° | 52° | 72° | — | — |
| 1980 | 68° | 55° | 62° | — | — |
| 1979 | 68° | 42° | 55° | — | — |
| 1978 | 89° | 55° | 72° | — | — |
| 1977coldest | 57° | 48° | 53° | 1.85" | — |
| 1976 | 76° | 51° | 63° | — | — |
| 1975 | 74° | 48° | 61° | — | — |
| 1974 | 70° | 55° | 62° | — | — |
| 1973 | 79° | 48° | 63° | — | — |
| 1972 | 71° | 45° | 58° | — | — |
| 1971 | 64° | 46° | 55° | — | — |
52 years of data from POMONA/FAIRPLEX