NPS Photo / Public domain
Murrieta, CA Weather on May 15
May 15th in Murrieta, CA typically brings pleasant spring weather, with average highs around 76°F and lows near 52°F. Over 54 years of records, the warmest May 15th was in 2014 (84°F average), while the coldest was 2011 (51°F) — a 33°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 1.8°F cooler on this date compared to 20-30 years ago.
What to Expect on May 15
Planning for May 15th in Murrieta, CA? Great weather for outdoor activities.
May 15 Weather Records for Murrieta
- •The all-time record high for May 15th in Murrieta, CA is 98°F, set in 2014.
- •The coldest May 15th on record dropped to 42°F in 2011.
- •Temperatures have reached 90°F or higher on May 15th in 6 of the last 54 years.
Frequently Asked Questions
What was the warmest May 15 ever in Murrieta?
The warmest May 15 in Murrieta, CA reached 98°F in 2014. That is 22°F above the long-term average high of 76°F.
What was the coldest May 15 ever in Murrieta?
The coldest May 15 in Murrieta, CA dropped to 42°F in 2011. That is 10°F below the long-term average low of 52°F.
What is the average temperature on May 15 in Murrieta?
On May 15, Murrieta averages a high of 76°F and a low of 52°F based on 54 years of NOAA weather observations from SANTA ROSA PLATEAU CALIFORNIA.
How many years of weather data are available for May 15 in Murrieta?
We have 54 years of weather records for May 15 in Murrieta, 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 15 Weather History in Murrieta
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 71°F | 49°F | -- | -- |
| 2024 | 65°F | 51°F | -- | -- |
| 2023 | 74°F | 54°F | -- | -- |
| 2022 | 84°F | 55°F | -- | -- |
| 2021 | 66°F | 51°F | -- | -- |
| 2020 | 74°F | 53°F | -- | -- |
| 2019 | 64°F | 52°F | -- | -- |
| 2018 | 71°F | 48°F | -- | -- |
| 2017 | 64°F | 52°F | 0" | -- |
| 2016 | 66°F | 52°F | -- | -- |
| 2015 | 61°F | 46°F | -- | -- |
| 2014 | 98°F | 69°F | -- | -- |
| 2013 | 75°F | 52°F | -- | -- |
| 2012 | 76°F | 54°F | -- | -- |
| 2011 | 60°F | 42°F | -- | -- |
| 2010 | 73°F | 48°F | -- | -- |
| 2009 | 77°F | 55°F | -- | -- |
| 2008 | 87°F | 64°F | -- | -- |
| 2007 | 67°F | 49°F | -- | -- |
| 2006 | 81°F | 52°F | -- | -- |
| 2005 | 82°F | 53°F | -- | -- |
| 2004 | 83°F | 53°F | -- | -- |
| 2003 | 68°F | 44°F | -- | -- |
| 2002 | 70°F | 50°F | -- | -- |
| 2001 | 75°F | 49°F | -- | -- |
| 2000 | 70°F | 50°F | -- | -- |
| 1999 | 63°F | 48°F | -- | -- |
| 1998 | 69°F | 45°F | -- | -- |
| 1997 | 91°F | 59°F | -- | -- |
| 1996 | 77°F | 56°F | -- | -- |
| 1995 | 68°F | 45°F | -- | -- |
| 1994 | 59°F | 52°F | -- | -- |
| 1993 | 89°F | 62°F | 0" | -- |
| 1992 | 78°F | 57°F | 0" | -- |
| 1991 | 87°F | 47°F | 0" | -- |
| 1990 | 78°F | 52°F | 0" | -- |
| 1989 | 64°F | 53°F | 0" | -- |
| 1988 | 92°F | 56°F | 0" | -- |
| 1987 | 83°F | 60°F | 0" | -- |
| 1986 | 76°F | 57°F | 0" | -- |
| 1985 | 89°F | 50°F | 0" | -- |
| 1984 | 97°F | 54°F | 0" | -- |
| 1983 | 84°F | 52°F | 0" | -- |
| 1982 | 84°F | 49°F | -- | -- |
| 1981 | 72°F | 59°F | 0" | -- |
| 1980 | 68°F | 54°F | 0" | -- |
| 1979 | 89°F | 48°F | 0" | -- |
| 1978 | 90°F | 51°F | 0" | -- |
| 1977 | 66°F | 52°F | 0" | -- |
| 1976 | 96°F | 54°F | 0" | -- |
| 1975 | 74°F | 57°F | 0" | -- |
| 1974 | 72°F | 49°F | 0" | -- |
| 1973 | 85°F | 54°F | 0" | -- |
| 1972 | -- | 54°F | 0" | -- |
Based on 54 years of data from NOAA station: SANTA ROSA PLATEAU CALIFORNIA
Monthly Climate Averages
Historical temperature and precipitation averages for Murrieta, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.