Weather landscape

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Rancho Cucamonga, CA Weather on April 11

April 11th in Rancho Cucamonga, CA typically brings pleasant spring weather, with average highs around 74°F and lows near 49°F — a 25°F daily swing. Over 41 years of records, the warmest April 11th was in 2025 (73°F average), while the coldest was 1975 (48°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 15% of April 11th dates historically, with the wettest April 11th recording 1.52" of rain. The last decade has been 4.5°F warmer on this date compared to 20-30 years ago.

By Weather On This Day|
Avg High
74°F
Avg Low
49°F
Record High
90°F
2008
Record Low
37°F
1974
Rancho Cucamonga, CA on April 11 — Temperature History20°F40°F60°F80°F100°F19801990200020102020HighLow

What to Expect on April 11

Planning for April 11th in Rancho Cucamonga, CA? Great weather for outdoor activities.

April 11 Weather Records for Rancho Cucamonga

  • The all-time record high for April 11th in Rancho Cucamonga, CA is 90°F, set in 2008.
  • The coldest April 11th on record dropped to 37°F in 1974.
  • Temperatures have reached 90°F or higher on April 11th in 1 of the last 41 years.

Frequently Asked Questions

What was the warmest April 11 ever in Rancho Cucamonga?

The warmest April 11 in Rancho Cucamonga, CA reached 90°F in 2008. That is 16°F above the long-term average high of 74°F.

What was the coldest April 11 ever in Rancho Cucamonga?

The coldest April 11 in Rancho Cucamonga, CA dropped to 37°F in 1974. That is 12°F below the long-term average low of 49°F.

What is the average temperature on April 11 in Rancho Cucamonga?

On April 11, Rancho Cucamonga averages a high of 74°F and a low of 49°F based on 41 years of NOAA weather observations from ONTARIO INTL AP.

How many years of weather data are available for April 11 in Rancho Cucamonga?

We have 41 years of weather records for April 11 in Rancho Cucamonga, CA, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.

April 11 Weather History in Rancho Cucamonga

YearHighLowPrecipSnow
202589°F58°F0"--
202488°F54°F0"--
202379°F50°F0"--
202266°F52°F0.08"--
202179°F54°F0"--
202069°F47°F0"--
201977°F52°F0"--
201884°F56°F0"--
201779°F51°F0"--
201676°F55°F0"--
201576°F50°F0"--
201486°F55°F0"--
201381°F52°F0"--
201260°F49°F0.86"--
201176°F49°F0"--
201060°F50°F0.23"--
200962°F48°F0"--
200890°F51°F0"--
200772°F51°F0"--
200669°F50°F0"--
200579°F48°F0"--
200487°F52°F0"--
200373°F52°F0"--
200281°F50°F0"--
200155°F45°F0.05"--
200088°F51°F0"--
199956°F42°F1.52"--
198479°F49°F0"--
198359°F45°F0.28"--
198269°F59°F0"--
198171°F52°F0"--
198085°F50°F0"--
197968°F41°F0"--
197873°F48°F0"--
197765°F42°F0"--
197665°F39°F0"--
197559°F38°F0"--
197475°F37°F0"--
197376°F40°F0"--
197265°F44°F0"--
197178°F45°F0"--

Based on 41 years of data from NOAA station: ONTARIO INTL AP

Monthly Climate Averages

Historical temperature and precipitation averages for Rancho Cucamonga, CA, based on 55+ years of weather data.

Warmest MonthAugustAvg High: 93°F / Low: 63°F
Coldest MonthJanuaryAvg High: 66°F / Low: 43°F
Jan
66°/ 43°
💧 12.9"
Feb
68°/ 44°
💧 14.7"
Mar
70°/ 47°
💧 10.7"
Apr
74°/ 49°
💧 5.7"
May
79°/ 53°
💧 4.6"
Jun
87°/ 58°
💧 1.5"
Jul
93°/ 63°
💧 2.4"
Aug
93°/ 63°
💧 8.4"
Sep
90°/ 62°
💧 6.3"
Oct
81°/ 55°
💧 5.8"
Nov
73°/ 47°
💧 8.1"
Dec
67°/ 43°
💧 10.9"

Temperatures in Fahrenheit. Precipitation and snowfall in inches.