Weather on June 30
Rancho Cucamonga, CA
55 Years of Data
About This Date
June 30th in Rancho Cucamonga, CA typically brings hot summer weather, with average highs around 91°F and lows near 61°F — a 30°F daily swing. Over 42 years of records, the warmest June 30th was in 2013 (90°F average), while the coldest was 1982 (64°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 2% of June 30th dates historically. The last decade has been 4.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.2°F warmer on this date compared to 20-30 years ago.
Planning for June 30th in Rancho Cucamonga, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 95° | 64° | 80° | — | — |
| 2024 | 98° | 65° | 81° | — | — |
| 2023 | 94° | 61° | 77° | — | — |
| 2022 | 94° | 67° | 80° | — | — |
| 2021 | 95° | 66° | 81° | — | — |
| 2020 | 86° | 60° | 73° | — | — |
| 2019 | 98° | 66° | 82° | — | — |
| 2018 | 85° | 61° | 73° | — | — |
| 2017 | 88° | 61° | 74° | — | — |
| 2016 | 96° | 65° | 80° | — | — |
| 2015 | 100° | 69° | 85° | 0.03" | — |
| 2014 | 90° | 66° | 78° | — | — |
| 2013warmest | 104° | 75° | 90° | — | — |
| 2012 | 91° | 60° | 76° | — | — |
| 2011 | 91° | 58° | 74° | — | — |
| 2010 | 91° | 61° | 76° | — | — |
| 2009 | 90° | 64° | 77° | — | — |
| 2008 | 97° | 65° | 81° | — | — |
| 2007 | 95° | 64° | 80° | — | — |
| 2006 | 101° | 70° | 85° | — | — |
| 2005 | 90° | 59° | 74° | — | — |
| 2004 | 79° | 59° | 69° | — | — |
| 2003 | 94° | 60° | 77° | — | — |
| 2002 | 87° | 56° | 71° | — | — |
| 2001 | 96° | 58° | 77° | — | — |
| 2000 | 88° | 62° | 75° | — | — |
| 1999 | 91° | 58° | 74° | — | — |
| 1998 | 88° | 61° | 74° | — | — |
| 1984 | 98° | 60° | 79° | — | — |
| 1983 | 75° | 60° | 68° | — | — |
| 1982coldest | 74° | 55° | 64° | — | — |
| 1981 | 93° | 59° | 76° | — | — |
| 1980 | 93° | 67° | 80° | — | — |
| 1979 | 94° | 59° | 76° | — | — |
| 1978 | 85° | 53° | 69° | — | — |
| 1977 | 91° | 60° | 76° | — | — |
| 1976 | 91° | 59° | 75° | — | — |
| 1975 | 85° | 53° | 69° | — | — |
| 1974 | 86° | 52° | 69° | — | — |
| 1973 | 89° | 52° | 70° | — | — |
| 1972 | 93° | 61° | 77° | — | — |
| 1971 | 84° | 50° | 67° | — | — |
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.