Weather on March 31
Rancho Cucamonga, CA
55 Years of Data
About This Date
March 31st in Rancho Cucamonga, CA typically brings pleasant spring weather, with average highs around 72°F and lows near 48°F. Over 42 years of records, the warmest March 31st was in 2011 (75°F average), while the coldest was 1977 (44°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 14% of March 31st dates historically, with the wettest March 31st recording 2.97" of rain. The last decade has been 1.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.6°F cooler on this date compared to 20-30 years ago.
Planning for March 31st in Rancho Cucamonga, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 70° | 60° | 65° | 0.64" | — |
| 2025 | 69° | 53° | 61° | 0.05" | — |
| 2024 | 56° | 48° | 52° | 0.84" | — |
| 2023 | 66° | 41° | 54° | — | — |
| 2022 | 64° | 54° | 59° | — | — |
| 2021 | 87° | 59° | 73° | — | — |
| 2020 | 78° | 50° | 64° | — | — |
| 2019 | 89° | 51° | 70° | — | — |
| 2018 | 82° | 54° | 68° | — | — |
| 2017 | 71° | 48° | 60° | — | — |
| 2016 | 73° | 45° | 59° | — | — |
| 2015 | 80° | 53° | 67° | — | — |
| 2014 | 69° | 48° | 59° | — | — |
| 2013 | 72° | 52° | 62° | — | — |
| 2012 | 61° | 49° | 55° | 0.18" | — |
| 2011warmest | 93° | 57° | 75° | — | — |
| 2010 | 60° | 46° | 53° | 0.08" | — |
| 2009 | 75° | 47° | 61° | — | — |
| 2008 | 66° | 44° | 55° | — | — |
| 2007 | 82° | 50° | 66° | — | — |
| 2006 | 60° | 49° | 54° | — | — |
| 2005 | 78° | 51° | 65° | — | — |
| 2004 | 75° | 51° | 63° | — | — |
| 2003 | 87° | 54° | 70° | — | — |
| 2002 | 80° | 48° | 64° | — | — |
| 2001 | 77° | 55° | 66° | — | — |
| 2000 | 78° | 53° | 66° | — | — |
| 1999 | 59° | 47° | 53° | — | — |
| 1984 | 64° | 38° | 51° | — | — |
| 1983 | 73° | 45° | 59° | — | — |
| 1982 | 63° | 36° | 49° | — | — |
| 1981 | 77° | 41° | 59° | — | — |
| 1980 | 67° | 44° | 55° | — | — |
| 1979 | 71° | 38° | 54° | — | — |
| 1978 | 61° | 50° | 55° | 2.97" | — |
| 1977coldest | 55° | 33° | 44° | — | — |
| 1976 | 78° | 48° | 63° | — | — |
| 1975 | 67° | 38° | 52° | — | — |
| 1974 | 67° | 44° | 55° | — | — |
| 1973 | 58° | 45° | 51° | — | — |
| 1972 | 79° | 43° | 61° | — | — |
| 1971 | 73° | 45° | 59° | — | — |
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.