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San Bernardino, CA Weather on May 27
May 27th in San Bernardino, CA typically brings warm spring weather, with average highs around 82°F and lows near 55°F — a 27°F daily swing. Over 48 years of records, the warmest May 27th was in 1983 (80°F average), while the coldest was 1971 (58°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 6% of May 27th dates historically.
What to Expect on May 27
Planning for May 27th in San Bernardino, CA? Stay hydrated and seek shade during peak afternoon hours.
May 27 Weather Records for San Bernardino
- •The all-time record high for May 27th in San Bernardino, CA is 102°F, set in 2003.
- •The coldest May 27th on record dropped to 45°F in 2008.
- •Temperatures have reached 90°F or higher on May 27th in 9 of the last 48 years.
- •Last year (1971), May 27th was 14°F cooler than the long-term average.
Frequently Asked Questions
What was the warmest May 27 ever in San Bernardino?
The warmest May 27 in San Bernardino, CA reached 102°F in 2003. That is 20°F above the long-term average high of 82°F.
What was the coldest May 27 ever in San Bernardino?
The coldest May 27 in San Bernardino, CA dropped to 45°F in 2008. That is 10°F below the long-term average low of 55°F.
What is the average temperature on May 27 in San Bernardino?
On May 27, San Bernardino averages a high of 82°F and a low of 55°F based on 48 years of NOAA weather observations from NORTON AFB.
How many years of weather data are available for May 27 in San Bernardino?
We have 48 years of weather records for May 27 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.
May 27 Weather History in San Bernardino
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 84°F | 58°F | -- | -- |
| 2017 | 74°F | 52°F | -- | -- |
| 2016 | 80°F | 51°F | -- | -- |
| 2015 | 76°F | 54°F | -- | -- |
| 2014 | 92°F | 61°F | 0" | -- |
| 2013 | 83°F | 52°F | 0" | -- |
| 2012 | 82°F | 46°F | 0" | -- |
| 2011 | 84°F | 52°F | 0" | -- |
| 2010 | 70°F | 55°F | 0" | -- |
| 2009 | 87°F | 55°F | 0" | -- |
| 2008 | 74°F | 45°F | 0" | -- |
| 2007 | 87°F | 53°F | 0" | -- |
| 2006 | 72°F | 56°F | 0" | -- |
| 2005 | 86°F | 54°F | 0" | -- |
| 2004 | 79°F | 51°F | 0" | -- |
| 2003 | 102°F | 57°F | 0" | -- |
| 2002 | 80°F | 54°F | 0" | -- |
| 2001 | 81°F | 59°F | 0" | -- |
| 2000 | 101°F | 59°F | 0" | -- |
| 1999 | 89°F | 57°F | 0" | -- |
| 1998 | 75°F | 52°F | 0" | -- |
| 1997 | 96°F | 62°F | 0" | -- |
| 1996 | 78°F | 53°F | 0" | -- |
| 1995 | 77°F | 53°F | 0" | -- |
| 1994 | 82°F | 52°F | 0" | -- |
| 1993 | 78°F | 54°F | 0" | -- |
| 1992 | 80°F | 59°F | 0" | -- |
| 1991 | 69°F | 55°F | 0" | -- |
| 1990 | 77°F | 51°F | 0" | -- |
| 1989 | 86°F | 54°F | 0" | -- |
| 1988 | 77°F | 55°F | 0" | -- |
| 1987 | 63°F | 53°F | 0" | -- |
| 1986 | 89°F | 57°F | 0" | -- |
| 1985 | 77°F | 55°F | 0" | -- |
| 1984 | 99°F | 62°F | 0" | -- |
| 1983 | 100°F | 60°F | 0" | -- |
| 1982 | 68°F | 57°F | 0.03" | -- |
| 1981 | 79°F | 61°F | 0.28" | -- |
| 1980 | 69°F | 52°F | 0" | -- |
| 1979 | 82°F | 61°F | 0" | -- |
| 1978 | 89°F | 50°F | 0" | -- |
| 1977 | 77°F | 47°F | 0" | -- |
| 1976 | 87°F | 55°F | 0" | -- |
| 1975 | 85°F | 55°F | 0" | -- |
| 1974 | 92°F | 59°F | 0" | -- |
| 1973 | 101°F | 51°F | 0" | -- |
| 1972 | 90°F | 51°F | 0" | -- |
| 1971 | 68°F | 49°F | 0.18" | -- |
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.