Weather on October 20
Pomona, CA
55 Years of Data
Avg High
79°F
Avg Low
54°F
Warmest
2003
81°F avg
Coldest
1977
57°F avg
About This Date
October 20th in Pomona, CA typically brings pleasant fall weather, with average highs around 79°F and lows near 54°F — a 25°F daily swing. Over 52 years of records, the warmest October 20th was in 2003 (81°F average), while the coldest was 1977 (57°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 12% of October 20th dates historically, with the wettest October 20th recording 5.08" of rain. The last decade has been 2.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.6°F warmer on this date compared to 20-30 years ago.
Planning for October 20th in Pomona, CA? Great weather for outdoor activities.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 84° | 55° | 70° | — | — |
| 2024 | 82° | 54° | 68° | — | — |
| 2023 | 93° | 66° | 80° | — | — |
| 2022 | 87° | 64° | 76° | — | — |
| 2021 | 75° | 46° | 61° | — | — |
| 2020 | 82° | 55° | 69° | — | — |
| 2019 | 83° | 53° | 68° | — | — |
| 2018 | 86° | 58° | 72° | — | — |
| 2017 | 68° | 56° | 62° | — | — |
| 2016 | 94° | 59° | 76° | — | — |
| 2015 | 77° | 52° | 64° | — | — |
| 2014 | 79° | 54° | 66° | — | — |
| 2013 | 81° | 53° | 67° | — | — |
| 2012 | 71° | 54° | 62° | — | — |
| 2011 | 74° | 55° | 64° | — | — |
| 2010 | 64° | 58° | 61° | 0.08" | — |
| 2009 | 72° | 60° | 66° | — | — |
| 2008 | 77° | 49° | 63° | — | — |
| 2007 | 77° | 54° | 65° | — | — |
| 2006 | 85° | 55° | 70° | — | — |
| 2005 | 80° | 52° | 66° | — | — |
| 2004 | 62° | 55° | 59° | 5.08" | — |
| 2003warmest | 101° | 61° | 81° | — | — |
| 2002 | 75° | 52° | 63° | — | — |
| 2001 | 80° | 52° | 66° | — | — |
| 2000 | 78° | 54° | 66° | — | — |
| 1999 | 96° | 48° | 72° | — | — |
| 1998 | 84° | 52° | 68° | — | — |
| 1994 | 77° | 49° | 63° | — | — |
| 1993 | 90° | 51° | 70° | — | — |
| 1992 | 78° | 50° | 64° | — | — |
| 1991 | 84° | 62° | 73° | — | — |
| 1990 | 84° | 49° | 66° | — | — |
| 1989 | 70° | 59° | 64° | — | — |
| 1988 | 77° | 64° | 71° | — | — |
| 1987 | 70° | 44° | 57° | — | — |
| 1986 | 79° | 46° | 62° | — | — |
| 1985 | 75° | 51° | 63° | — | — |
| 1984 | 72° | 50° | 61° | — | — |
| 1983 | 80° | 57° | 69° | — | — |
| 1982 | 78° | 52° | 65° | — | — |
| 1981 | 88° | 48° | 68° | — | — |
| 1980 | 91° | 47° | 69° | — | — |
| 1979 | 67° | 60° | 63° | 2.87" | — |
| 1978 | 87° | 59° | 73° | 0.15" | — |
| 1977coldest | 66° | 49° | 57° | — | — |
| 1976 | 79° | 58° | 68° | — | — |
| 1975 | 71° | 54° | 62° | — | — |
| 1974 | 81° | 52° | 66° | 0.03" | — |
| 1973 | 93° | 52° | 72° | — | — |
| 1972 | 69° | 53° | 61° | 0.13" | — |
| 1971 | 76° | 49° | 62° | — | — |
52 years of data from POMONA/FAIRPLEX