Weather on August 9
Pomona, CA
55 Years of Data
Avg High
91°F
Avg Low
62°F
Warmest
2009
88°F avg
Coldest
2010
68°F avg
About This Date
August 9th in Pomona, CA typically brings hot summer weather, with average highs around 91°F and lows near 62°F — a 29°F daily swing. Over 50 years of records, the warmest August 9th was in 2009 (88°F average), while the coldest was 2010 (68°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 2% of August 9th dates historically. The last decade has been 1.9°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.9°F cooler on this date compared to 20-30 years ago.
Planning for August 9th 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 | 92° | 64° | 78° | — | — |
| 2024 | 95° | 65° | 80° | — | — |
| 2023 | 84° | 64° | 74° | — | — |
| 2022 | 95° | 70° | 82° | — | — |
| 2021 | 91° | 59° | 75° | — | — |
| 2020 | 89° | 62° | 76° | — | — |
| 2019 | 89° | 62° | 76° | — | — |
| 2018 | 100° | 70° | 85° | — | — |
| 2017 | 90° | 63° | 76° | — | — |
| 2016 | 85° | 56° | 70° | — | — |
| 2015 | 83° | 54° | 68° | — | — |
| 2014 | 91° | 58° | 74° | — | — |
| 2013 | 84° | 52° | 68° | — | — |
| 2012 | 102° | 70° | 86° | — | — |
| 2011 | 87° | 59° | 73° | — | — |
| 2010coldest | 83° | 54° | 68° | — | — |
| 2009warmest | 90° | 86° | 88° | — | — |
| 2008 | — | 63° | — | — | — |
| 2007 | 90° | 59° | 74° | — | — |
| 2006 | 100° | 60° | 80° | — | — |
| 2005 | 94° | 66° | 80° | — | — |
| 2004 | 100° | 64° | 82° | — | — |
| 2003 | 103° | 65° | 84° | — | — |
| 2002 | 103° | 58° | 80° | — | — |
| 2001 | 89° | 65° | 77° | — | — |
| 2000 | 90° | 64° | 77° | — | — |
| 1999 | 84° | 53° | 69° | — | — |
| 1998 | 99° | 69° | 84° | — | — |
| 1993 | 90° | 63° | 76° | — | — |
| 1992 | 82° | 56° | 69° | — | — |
| 1991 | 87° | 62° | 75° | — | — |
| 1990 | 92° | 66° | 79° | — | — |
| 1989 | 90° | 61° | 75° | — | — |
| 1988 | 84° | 56° | 70° | — | — |
| 1987 | 91° | 55° | 73° | — | — |
| 1985 | 86° | 59° | 73° | — | — |
| 1984 | 85° | 61° | 73° | — | — |
| 1983 | 96° | 65° | 80° | — | — |
| 1982 | 95° | 58° | 76° | — | — |
| 1981 | 94° | 63° | 78° | — | — |
| 1980 | 95° | 64° | 80° | — | — |
| 1979 | 92° | 59° | 75° | — | — |
| 1978 | 89° | 65° | 77° | 0.03" | — |
| 1977 | 92° | 57° | 74° | — | — |
| 1976 | 87° | 53° | 70° | — | — |
| 1975 | 91° | 62° | 77° | — | — |
| 1974 | 81° | 62° | 71° | — | — |
| 1973 | 85° | 55° | 70° | — | — |
| 1972 | 89° | 63° | 76° | — | — |
| 1971 | 99° | 66° | 82° | — | — |
50 years of data from POMONA/FAIRPLEX