Weather on May 30
Rancho Cucamonga, CA
55 Years of Data
About This Date
May 30th in Rancho Cucamonga, CA typically brings warm spring weather, with average highs around 83°F and lows near 56°F — a 27°F daily swing. Over 43 years of records, the warmest May 30th was in 2025 (80°F average), while the coldest was 1971 (55°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 2% of May 30th dates historically. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for May 30th in Rancho Cucamonga, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 83° | 55° | 69° | — | — |
| 2025warmest | 100° | 61° | 80° | — | — |
| 2024 | 83° | 55° | 69° | — | — |
| 2023 | 69° | 57° | 63° | — | — |
| 2022 | 79° | 54° | 66° | — | — |
| 2021 | 81° | 58° | 69° | — | — |
| 2020 | 82° | 62° | 72° | — | — |
| 2019 | 89° | 57° | 73° | — | — |
| 2018 | 76° | 59° | 67° | — | — |
| 2017 | 81° | 58° | 69° | — | — |
| 2016 | 79° | 56° | 67° | — | — |
| 2015 | 90° | 58° | 74° | — | — |
| 2014 | 92° | 61° | 76° | — | — |
| 2013 | 88° | 59° | 73° | — | — |
| 2012 | 84° | 58° | 71° | — | — |
| 2011 | 81° | 50° | 65° | — | — |
| 2010 | 91° | 54° | 72° | — | — |
| 2009 | 74° | 59° | 66° | — | — |
| 2008 | 80° | 55° | 68° | — | — |
| 2007 | 82° | 54° | 68° | — | — |
| 2006 | 91° | 57° | 74° | — | — |
| 2005 | 80° | 57° | 69° | — | — |
| 2004 | 94° | 56° | 75° | — | — |
| 2003 | 85° | 60° | 72° | — | — |
| 2002 | 90° | 59° | 74° | — | — |
| 2001 | 90° | 58° | 74° | — | — |
| 2000 | 84° | 60° | 72° | — | — |
| 1999 | 74° | 53° | 63° | — | — |
| 1998 | 78° | 49° | 63° | — | — |
| 1984 | 95° | 61° | 78° | — | — |
| 1983 | 81° | 53° | 67° | — | — |
| 1982 | 76° | 54° | 65° | — | — |
| 1981 | 80° | 61° | 70° | — | — |
| 1980 | 69° | 45° | 57° | — | — |
| 1979 | 75° | 52° | 63° | — | — |
| 1978 | 93° | 60° | 77° | — | — |
| 1977 | 88° | 52° | 70° | — | — |
| 1976 | 71° | 49° | 60° | — | — |
| 1975 | 87° | 48° | 68° | — | — |
| 1974 | 70° | 51° | 60° | — | — |
| 1973 | 83° | 51° | 67° | — | — |
| 1972 | 93° | 62° | 78° | — | — |
| 1971coldest | 60° | 50° | 55° | 0.1" | — |
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.