Weather on October 31
Pomona, CA
55 Years of Data
Avg High
75°F
Avg Low
50°F
Warmest
2015
73°F avg
Coldest
1972
51°F avg
About This Date
October 31st in Pomona, CA typically brings pleasant fall weather, with average highs around 75°F and lows near 50°F — a 25°F daily swing. Over 52 years of records, the warmest October 31st was in 2015 (73°F average), while the coldest was 1972 (51°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 10% of October 31st dates historically, with the wettest October 31st recording 2.69" of rain. The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
Planning for October 31st in Pomona, CA? Great weather for outdoor activities.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 80° | 55° | 68° | — | — |
| 2024 | 70° | 46° | 58° | — | — |
| 2023 | 82° | 50° | 66° | — | — |
| 2022 | 82° | 55° | 69° | — | — |
| 2021 | 66° | 51° | 59° | — | — |
| 2020 | 88° | 57° | 72° | — | — |
| 2019 | 75° | 39° | 57° | — | — |
| 2018 | 78° | 53° | 66° | — | — |
| 2017 | 68° | 55° | 62° | — | — |
| 2016 | 67° | 50° | 58° | — | — |
| 2015warmest | 88° | 59° | 73° | — | — |
| 2014 | 72° | 50° | 61° | — | — |
| 2013 | 78° | 46° | 62° | — | — |
| 2012 | 76° | 50° | 63° | — | — |
| 2011 | 83° | 51° | 67° | — | — |
| 2010 | 69° | 50° | 60° | — | — |
| 2009 | 75° | 58° | 66° | — | — |
| 2008 | 85° | 57° | 71° | — | — |
| 2007 | 78° | 50° | 64° | — | — |
| 2006 | 66° | 47° | 56° | — | — |
| 2005 | 90° | 49° | 69° | — | — |
| 2004 | 72° | 46° | 59° | — | — |
| 2003 | 71° | 50° | 61° | 0.25" | — |
| 2002 | 68° | 54° | 61° | — | — |
| 2001 | 69° | 54° | 61° | — | — |
| 2000 | 67° | 42° | 54° | — | — |
| 1999 | 89° | 54° | 71° | — | — |
| 1998 | 73° | 44° | 59° | — | — |
| 1994 | 88° | 46° | 67° | — | — |
| 1993 | 80° | 50° | 65° | — | — |
| 1992 | 75° | 59° | 67° | 2.69" | — |
| 1991 | 73° | 44° | 59° | — | — |
| 1990 | 75° | 45° | 60° | — | — |
| 1989 | 79° | 46° | 62° | — | — |
| 1988 | 90° | 52° | 71° | — | — |
| 1987 | 58° | 55° | 56° | 2.18" | — |
| 1986 | 73° | 52° | 62° | — | — |
| 1985 | 74° | 53° | 63° | — | — |
| 1984 | 65° | 50° | 57° | — | — |
| 1983 | 75° | 59° | 67° | — | — |
| 1982 | 72° | 48° | 60° | — | — |
| 1981 | 87° | 41° | 64° | — | — |
| 1980 | 88° | 53° | 70° | — | — |
| 1979 | 76° | 41° | 58° | — | — |
| 1978 | 62° | 50° | 56° | 0.23" | — |
| 1977 | 74° | 47° | 60° | — | — |
| 1976 | 76° | 50° | 63° | — | — |
| 1975 | 67° | 43° | 55° | 0.53" | — |
| 1974 | 68° | 46° | 57° | — | — |
| 1973 | 86° | 55° | 71° | — | — |
| 1972coldest | 65° | 37° | 51° | — | — |
| 1971 | 68° | 37° | 53° | — | — |
52 years of data from POMONA/FAIRPLEX