Weather on September 16
Rancho Cucamonga, CA
55 Years of Data
About This Date
September 16th in Rancho Cucamonga, CA typically brings warm fall weather, with average highs around 88°F and lows near 61°F — a 27°F daily swing. Over 41 years of records, the warmest September 16th was in 2014 (92°F average), while the coldest was 1973 (63°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 7% of September 16th 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 16th in Rancho Cucamonga, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 100° | 70° | 85° | — | — |
| 2024 | 74° | 57° | 65° | — | — |
| 2023 | 74° | 65° | 69° | — | — |
| 2022 | 85° | 62° | 73° | — | — |
| 2021 | 87° | 59° | 73° | — | — |
| 2020 | 100° | 66° | 83° | — | — |
| 2019 | 90° | 65° | 77° | — | — |
| 2018 | 93° | 63° | 78° | — | — |
| 2017 | 81° | 60° | 70° | — | — |
| 2016 | 87° | 57° | 72° | — | — |
| 2015 | 79° | 65° | 72° | — | — |
| 2014warmest | 107° | 77° | 92° | 0.05" | — |
| 2013 | 101° | 66° | 83° | — | — |
| 2012 | 94° | 67° | 80° | — | — |
| 2011 | 75° | 61° | 68° | — | — |
| 2010 | 89° | 60° | 75° | — | — |
| 2009 | 92° | 62° | 77° | — | — |
| 2008 | 94° | 67° | 80° | — | — |
| 2007 | 85° | 57° | 71° | — | — |
| 2006 | 90° | 57° | 73° | — | — |
| 2005 | 78° | 59° | 69° | — | — |
| 2004 | 87° | 65° | 76° | — | — |
| 2003 | 89° | 58° | 73° | — | — |
| 2002 | 96° | 58° | 77° | 0.08" | — |
| 2001 | 89° | 57° | 73° | — | — |
| 2000 | 107° | 67° | 87° | — | — |
| 1999 | 79° | 56° | 67° | — | — |
| 1998 | 90° | 60° | 75° | — | — |
| 1983 | 94° | 63° | 78° | — | — |
| 1982 | 70° | 61° | 65° | 0.23" | — |
| 1981 | 98° | 62° | 80° | — | — |
| 1980 | 92° | 56° | 74° | — | — |
| 1979 | 100° | 68° | 84° | — | — |
| 1978 | 79° | 54° | 66° | — | — |
| 1977 | 74° | 55° | 64° | — | — |
| 1976 | 74° | 58° | 66° | — | — |
| 1975 | 94° | 66° | 80° | — | — |
| 1974 | 90° | 55° | 72° | — | — |
| 1973coldest | 78° | 48° | 63° | — | — |
| 1972 | 83° | 51° | 67° | — | — |
| 1971 | 80° | 58° | 69° | — | — |
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.