Stevenndori289 / CC BY-SA 4.0
Rialto, CA Weather on April 11
April 11th in Rialto, CA typically brings pleasant spring weather, with average highs around 73°F and lows near 48°F — a 25°F daily swing. Over 48 years of records, the warmest April 11th was in 2025 (73°F average), while the coldest was 1999 (45°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 4% of April 11th dates historically, with the wettest April 11th recording 1.12" of rain.
What to Expect on April 11
Planning for April 11th in Rialto, CA? Great weather for outdoor activities.
April 11 Weather Records for Rialto
- •The all-time record high for April 11th in Rialto, CA is 91°F, set in 2025.
- •The coldest April 11th on record dropped to 38°F in 1999.
- •Temperatures have reached 90°F or higher on April 11th in 2 of the last 48 years.
- •Last year (1971), April 11th was 10°F warmer than the long-term average.
Frequently Asked Questions
What was the warmest April 11 ever in Rialto?
The warmest April 11 in Rialto, CA reached 91°F in 2025. That is 18°F above the long-term average high of 73°F.
What was the coldest April 11 ever in Rialto?
The coldest April 11 in Rialto, CA dropped to 38°F in 1999. That is 10°F below the long-term average low of 48°F.
What is the average temperature on April 11 in Rialto?
On April 11, Rialto averages a high of 73°F and a low of 48°F based on 48 years of NOAA weather observations from DEVORE CALIFORNIA.
How many years of weather data are available for April 11 in Rialto?
We have 48 years of weather records for April 11 in Rialto, 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 Rialto
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 91°F | 55°F | -- | -- |
| 2017 | 73°F | 51°F | -- | -- |
| 2016 | 67°F | 53°F | -- | -- |
| 2015 | 72°F | 47°F | -- | -- |
| 2014 | 80°F | 54°F | -- | -- |
| 2013 | 75°F | 50°F | -- | -- |
| 2012 | 55°F | 45°F | -- | -- |
| 2011 | 70°F | 44°F | -- | -- |
| 2010 | 56°F | 46°F | -- | -- |
| 2009 | 54°F | 45°F | -- | -- |
| 2008 | 80°F | 57°F | -- | -- |
| 2007 | 67°F | 48°F | -- | -- |
| 2006 | 63°F | 47°F | -- | -- |
| 2005 | 77°F | 49°F | -- | -- |
| 2004 | 83°F | 50°F | -- | -- |
| 2003 | 68°F | 45°F | -- | -- |
| 2002 | 82°F | 51°F | -- | -- |
| 2001 | 48°F | 43°F | -- | -- |
| 2000 | 89°F | 54°F | -- | -- |
| 1999 | 53°F | 38°F | -- | -- |
| 1998 | 55°F | 46°F | -- | -- |
| 1997 | 72°F | 40°F | -- | -- |
| 1996 | 71°F | 46°F | -- | -- |
| 1995 | 76°F | 53°F | -- | -- |
| 1994 | 83°F | 43°F | 0" | -- |
| 1993 | 71°F | 50°F | -- | -- |
| 1992 | 74°F | 46°F | -- | -- |
| 1991 | 59°F | 45°F | -- | -- |
| 1990 | 87°F | 54°F | 0" | -- |
| 1989 | 85°F | 57°F | 0" | -- |
| 1988 | 90°F | 50°F | 0" | -- |
| 1987 | 81°F | 52°F | 0" | -- |
| 1986 | 71°F | 52°F | 0" | -- |
| 1985 | 85°F | 49°F | 0" | -- |
| 1984 | 81°F | 53°F | 0" | -- |
| 1983 | 63°F | 47°F | 0" | -- |
| 1982 | 72°F | 57°F | 1.12" | -- |
| 1981 | 73°F | 55°F | 0" | -- |
| 1980 | 78°F | 49°F | 0" | -- |
| 1979 | 69°F | 43°F | 0" | -- |
| 1978 | 80°F | 49°F | 0" | -- |
| 1977 | 66°F | 46°F | 0" | -- |
| 1976 | 70°F | 44°F | 0" | -- |
| 1975 | 57°F | 45°F | 0.2" | -- |
| 1974 | 81°F | 43°F | 0" | -- |
| 1973 | 78°F | 46°F | 0" | -- |
| 1972 | 71°F | 47°F | 0" | -- |
| 1971 | 83°F | 44°F | 0" | -- |
Based on 48 years of data from NOAA station: DEVORE CALIFORNIA
Monthly Climate Averages
Historical temperature and precipitation averages for Rialto, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.