Weather on April 18
Pomona, CA
55 Years of Data
Avg High
73°F
Avg Low
49°F
Warmest
1999
74°F avg
Coldest
2025
48°F avg
About This Date
April 18th in Pomona, CA typically brings pleasant spring weather, with average highs around 73°F and lows near 49°F. Over 53 years of records, the warmest April 18th was in 1999 (74°F average), while the coldest was 2025 (48°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 9% of April 18th dates historically, with the wettest April 18th recording 1.27" of rain. The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
Planning for April 18th in Pomona, CA? Great weather for outdoor activities.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025coldest | 52° | 45° | 48° | — | — |
| 2024 | 76° | 48° | 62° | — | — |
| 2023 | 59° | 44° | 52° | — | — |
| 2022 | 78° | 51° | 65° | — | — |
| 2021 | 83° | 58° | 70° | — | — |
| 2020 | 57° | 51° | 54° | — | — |
| 2019 | 86° | 52° | 69° | — | — |
| 2018 | 72° | 44° | 58° | — | — |
| 2017 | 72° | 56° | 64° | — | — |
| 2016 | 87° | 56° | 71° | — | — |
| 2015 | 81° | 51° | 66° | — | — |
| 2014 | 77° | 52° | 64° | — | — |
| 2013 | 78° | 43° | 60° | — | — |
| 2012 | 83° | 53° | 68° | 0.1" | — |
| 2011 | 60° | 57° | 59° | 0.1" | — |
| 2010 | 79° | 49° | 64° | — | — |
| 2009 | 79° | 44° | 61° | — | — |
| 2008 | 87° | 51° | 69° | — | — |
| 2007 | 72° | 50° | 61° | — | — |
| 2006 | 81° | 45° | 63° | — | — |
| 2005 | 62° | 53° | 58° | — | — |
| 2004 | 68° | 46° | 57° | — | — |
| 2003 | 62° | 48° | 55° | — | — |
| 2002 | 64° | 47° | 55° | — | — |
| 2001 | 71° | 51° | 61° | — | — |
| 2000 | 58° | 43° | 50° | — | — |
| 1999warmest | 90° | 58° | 74° | — | — |
| 1998 | 81° | 39° | 60° | — | — |
| 1995 | 100° | 46° | 73° | 1.27" | — |
| 1994 | 87° | 51° | 69° | — | — |
| 1993 | 80° | 48° | 64° | — | — |
| 1992 | 77° | 47° | 62° | — | — |
| 1991 | 69° | 43° | 56° | — | — |
| 1990 | 77° | 51° | 64° | — | — |
| 1989 | 80° | 47° | 63° | — | — |
| 1988 | 66° | 53° | 60° | — | — |
| 1987 | 72° | 53° | 62° | — | — |
| 1986 | 79° | 39° | 59° | — | — |
| 1985 | 60° | 52° | 56° | — | — |
| 1984 | 69° | 53° | 61° | — | — |
| 1983 | 63° | 53° | 58° | — | — |
| 1982 | 81° | 46° | 63° | — | — |
| 1981 | 65° | 52° | 58° | — | — |
| 1980 | 90° | 55° | 72° | — | — |
| 1979 | 68° | 41° | 55° | — | — |
| 1978 | 72° | 48° | 60° | — | — |
| 1977 | 77° | 53° | 65° | — | — |
| 1976 | 66° | 40° | 53° | — | — |
| 1975 | 60° | 41° | 51° | 0.43" | — |
| 1974 | 75° | 47° | 61° | — | — |
| 1973 | 59° | 44° | 52° | — | — |
| 1972 | 68° | 49° | 58° | — | — |
| 1971 | 55° | 48° | 52° | 0.36" | — |
53 years of data from POMONA/FAIRPLEX