NPS Photo / Public domain
San Bernardino, CA Weather on April 11
April 11th in San Bernardino, CA typically brings pleasant spring weather, with average highs around 75°F and lows near 49°F — a 26°F daily swing. Over 48 years of records, the warmest April 11th was in 2025 (73°F average), while the coldest was 1975 (51°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 13% 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 San Bernardino, CA? Great weather for outdoor activities.
April 11 Weather Records for San Bernardino
- •The all-time record high for April 11th in San Bernardino, CA is 91°F, set in 2025.
- •The coldest April 11th on record dropped to 42°F in 2006.
- •Temperatures have reached 90°F or higher on April 11th in 4 of the last 48 years.
- •Last year (1971), April 11th was 8°F warmer than the long-term average.
Frequently Asked Questions
What was the warmest April 11 ever in San Bernardino?
The warmest April 11 in San Bernardino, CA reached 91°F in 2025. That is 16°F above the long-term average high of 75°F.
What was the coldest April 11 ever in San Bernardino?
The coldest April 11 in San Bernardino, CA dropped to 42°F in 2006. That is 7°F below the long-term average low of 49°F.
What is the average temperature on April 11 in San Bernardino?
On April 11, San Bernardino averages a high of 75°F and a low of 49°F based on 48 years of NOAA weather observations from NORTON AFB.
How many years of weather data are available for April 11 in San Bernardino?
We have 48 years of weather records for April 11 in San Bernardino, 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 San Bernardino
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 91°F | 55°F | -- | -- |
| 2017 | 73°F | 51°F | -- | -- |
| 2016 | 67°F | 53°F | -- | -- |
| 2015 | 76°F | 47°F | 0" | -- |
| 2014 | 85°F | 58°F | 0" | -- |
| 2013 | 83°F | 47°F | 0" | -- |
| 2012 | 63°F | 49°F | 0.3" | -- |
| 2011 | 76°F | 44°F | 0" | -- |
| 2010 | 69°F | 48°F | 0" | -- |
| 2009 | 59°F | 47°F | 0.08" | -- |
| 2008 | 90°F | 47°F | 0" | -- |
| 2007 | 73°F | 46°F | 0" | -- |
| 2006 | 68°F | 42°F | 0.28" | -- |
| 2005 | 80°F | 44°F | 0" | -- |
| 2004 | 71°F | 50°F | 0" | -- |
| 2003 | 83°F | 47°F | 0" | -- |
| 2002 | 85°F | 51°F | 0" | -- |
| 2001 | 57°F | 48°F | 0" | -- |
| 2000 | 90°F | 51°F | 0" | -- |
| 1999 | 57°F | 44°F | 0.15" | -- |
| 1998 | 55°F | 50°F | 0" | -- |
| 1997 | 72°F | 44°F | 0" | -- |
| 1996 | 74°F | 51°F | 0" | -- |
| 1995 | 80°F | 46°F | 0" | -- |
| 1994 | 83°F | 43°F | 0" | -- |
| 1993 | 77°F | 51°F | 0" | -- |
| 1992 | 75°F | 54°F | 0" | -- |
| 1991 | 63°F | 48°F | 0" | -- |
| 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: NORTON AFB
Monthly Climate Averages
Historical temperature and precipitation averages for San Bernardino, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.