Weather on April 20
Rancho Cucamonga, CA
55 Years of Data
About This Date
April 20th in Rancho Cucamonga, CA typically brings pleasant spring weather, with average highs around 76°F and lows near 49°F — a 27°F daily swing. Over 42 years of records, the warmest April 20th was in 2009 (80°F average), while the coldest was 1971 (48°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 10% of April 20th dates historically, with the wettest April 20th recording 2.11" of rain. The last decade has been 4.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.4°F warmer on this date compared to 20-30 years ago.
Planning for April 20th in Rancho Cucamonga, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 80° | 55° | 68° | — | — |
| 2025 | 81° | 50° | 65° | — | — |
| 2024 | 74° | 53° | 63° | — | — |
| 2023 | 84° | 48° | 66° | — | — |
| 2022 | 70° | 52° | 61° | — | — |
| 2021 | 80° | 53° | 67° | — | — |
| 2020 | 65° | 53° | 59° | — | — |
| 2019 | 71° | 58° | 64° | — | — |
| 2018 | 78° | 46° | 62° | — | — |
| 2017 | 81° | 52° | 66° | — | — |
| 2016 | 90° | 58° | 74° | — | — |
| 2015 | 77° | 54° | 65° | — | — |
| 2014 | 85° | 55° | 70° | — | — |
| 2013 | 92° | 50° | 71° | — | — |
| 2012 | 96° | 56° | 76° | — | — |
| 2011 | 68° | 57° | 63° | — | — |
| 2010 | 70° | 49° | 59° | 0.53" | — |
| 2009warmest | 100° | 61° | 80° | — | — |
| 2008 | 67° | 48° | 57° | — | — |
| 2007 | 53° | 48° | 51° | 2.11" | — |
| 2006 | 83° | 52° | 67° | — | — |
| 2005 | 72° | 47° | 59° | — | — |
| 2004 | 73° | 48° | 61° | — | — |
| 2003 | 78° | 48° | 63° | — | — |
| 2002 | 71° | 40° | 55° | — | — |
| 2001 | 61° | 48° | 54° | 0.53" | — |
| 2000 | 82° | 49° | 65° | — | — |
| 1999 | 80° | 54° | 67° | — | — |
| 1984 | 75° | 39° | 57° | — | — |
| 1983 | 61° | 51° | 56° | 0.84" | — |
| 1982 | 80° | 46° | 63° | — | — |
| 1981 | 67° | 47° | 57° | — | — |
| 1980 | 79° | 52° | 65° | — | — |
| 1979 | 80° | 44° | 62° | — | — |
| 1978 | 64° | 47° | 55° | — | — |
| 1977 | 81° | 42° | 61° | — | — |
| 1976 | 85° | 50° | 67° | — | — |
| 1975 | 78° | 40° | 59° | — | — |
| 1974 | 68° | 38° | 53° | — | — |
| 1973 | 68° | 38° | 53° | — | — |
| 1972 | 70° | 35° | 52° | — | — |
| 1971coldest | 54° | 43° | 48° | — | — |
Rancho Cucamonga, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Rancho Cucamonga, CA Monthly Precipitation
Average rainfall per month, in inches.
Rancho Cucamonga, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Rancho Cucamonga, CA
Rancho Cucamonga, CA has no months that meet our "pleasant" threshold — every season has tradeoffs.