Weather on September 22
Rancho Cucamonga, CA
55 Years of Data
About This Date
September 22nd in Rancho Cucamonga, CA typically brings warm fall weather, with average highs around 88°F and lows near 60°F — a 28°F daily swing. Over 41 years of records, the warmest September 22nd was in 2021 (87°F average), while the coldest was 2007 (62°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 5% of September 22nd 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 September 22nd in Rancho Cucamonga, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 92° | 67° | 79° | — | — |
| 2024 | 89° | 58° | 73° | — | — |
| 2023 | 77° | 58° | 67° | — | — |
| 2022 | 93° | 60° | 77° | — | — |
| 2021warmest | 102° | 72° | 87° | — | — |
| 2020 | 94° | 63° | 78° | — | — |
| 2019 | 96° | 65° | 80° | — | — |
| 2018 | 97° | 63° | 80° | — | — |
| 2017 | 75° | 54° | 64° | — | — |
| 2016 | 79° | 58° | 68° | — | — |
| 2015 | 88° | 68° | 78° | — | — |
| 2014 | 91° | 62° | 77° | — | — |
| 2013 | 80° | 57° | 69° | — | — |
| 2012 | 99° | 69° | 84° | — | — |
| 2011 | 100° | 60° | 80° | — | — |
| 2010 | 68° | 58° | 63° | — | — |
| 2009 | 105° | 61° | 83° | — | — |
| 2008 | 84° | 57° | 71° | — | — |
| 2007coldest | 67° | 57° | 62° | 0.43" | — |
| 2006 | 75° | 59° | 67° | — | — |
| 2005 | 90° | 58° | 74° | — | — |
| 2004 | 92° | 59° | 75° | — | — |
| 2003 | 103° | 62° | 82° | — | — |
| 2002 | 104° | 64° | 84° | — | — |
| 2001 | 93° | 59° | 76° | — | — |
| 2000 | 70° | 60° | 65° | 0.33" | — |
| 1999 | 91° | 68° | 80° | — | — |
| 1998 | 74° | 62° | 68° | — | — |
| 1983 | 85° | 68° | 76° | — | — |
| 1982 | 102° | 58° | 80° | — | — |
| 1981 | 90° | 55° | 72° | — | — |
| 1980 | 81° | 51° | 66° | — | — |
| 1979 | 94° | 58° | 76° | — | — |
| 1978 | 101° | 56° | 78° | — | — |
| 1977 | 80° | 48° | 64° | — | — |
| 1976 | 75° | 56° | 65° | — | — |
| 1975 | 100° | 62° | 81° | — | — |
| 1974 | 99° | 68° | 83° | — | — |
| 1973 | 76° | 55° | 65° | — | — |
| 1972 | 90° | 61° | 75° | — | — |
| 1971 | 83° | 54° | 68° | — | — |
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.