NPS Photo / Public domain
Stockton, CA Weather on May 15
May 15th in Stockton, CA typically brings warm spring weather, with average highs around 83°F and lows near 51°F — a 32°F daily swing. Over 55 years of records, the warmest May 15th was in 2006 (80°F average), while the coldest was 1998 (54°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 7% of May 15th dates historically, with the wettest May 15th recording 1.32" of rain. Temperatures on this date have remained relatively stable over the past several decades.
What to Expect on May 15
Planning for May 15th in Stockton, CA? Stay hydrated and seek shade during peak afternoon hours.
May 15 Weather Records for Stockton
- •The all-time record high for May 15th in Stockton, CA is 101°F, set in 1976.
- •The coldest May 15th on record dropped to 40°F in 1999.
- •Temperatures have reached 90°F or higher on May 15th in 10 of the last 55 years.
Frequently Asked Questions
What was the warmest May 15 ever in Stockton?
The warmest May 15 in Stockton, CA reached 101°F in 1976. That is 18°F above the long-term average high of 83°F.
What was the coldest May 15 ever in Stockton?
The coldest May 15 in Stockton, CA dropped to 40°F in 1999. That is 11°F below the long-term average low of 51°F.
What is the average temperature on May 15 in Stockton?
On May 15, Stockton averages a high of 83°F and a low of 51°F based on 55 years of NOAA weather observations from STOCKTON FIRE STN 4.
How many years of weather data are available for May 15 in Stockton?
We have 55 years of weather records for May 15 in Stockton, 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 Stockton
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 88°F | 48°F | 0" | -- |
| 2024 | 89°F | 55°F | 0" | -- |
| 2023 | 88°F | 54°F | 0" | -- |
| 2022 | 93°F | 55°F | 0" | -- |
| 2021 | 74°F | 51°F | 0" | -- |
| 2020 | 82°F | 53°F | 0" | -- |
| 2019 | 69°F | 55°F | 1.32" | -- |
| 2018 | 79°F | 50°F | 0" | -- |
| 2017 | 78°F | 48°F | 0" | -- |
| 2016 | 82°F | 49°F | 0" | -- |
| 2015 | 72°F | 51°F | 0" | -- |
| 2014 | 98°F | 56°F | 0" | -- |
| 2013 | 81°F | 55°F | 0" | -- |
| 2012 | 83°F | 53°F | 0" | -- |
| 2011 | 65°F | -- | 0.2" | -- |
| 2010 | 87°F | 48°F | 0" | -- |
| 2009 | 93°F | 48°F | 0" | -- |
| 2008 | 100°F | 59°F | 0" | -- |
| 2007 | 91°F | 53°F | 0" | -- |
| 2006 | 97°F | 64°F | 0" | -- |
| 2005 | 86°F | 60°F | 0" | -- |
| 2004 | 88°F | 50°F | 0" | -- |
| 2003 | 80°F | 51°F | 0" | -- |
| 2002 | 87°F | 52°F | 0" | -- |
| 2001 | 83°F | 53°F | 0" | -- |
| 2000 | 72°F | 52°F | 0.13" | -- |
| 1999 | 71°F | 40°F | 0" | -- |
| 1998 | 64°F | 44°F | 0" | -- |
| 1997 | 89°F | 59°F | 0" | -- |
| 1996 | 84°F | 63°F | 0" | -- |
| 1995 | 69°F | 49°F | 0.23" | -- |
| 1994 | 84°F | 47°F | 0" | -- |
| 1993 | 79°F | 49°F | 0" | -- |
| 1992 | 81°F | 46°F | 0" | -- |
| 1991 | 79°F | 50°F | 0" | -- |
| 1990 | 78°F | 44°F | 0" | -- |
| 1989 | 82°F | 41°F | 0" | -- |
| 1988 | 87°F | 49°F | 0" | -- |
| 1987 | 92°F | 54°F | 0" | -- |
| 1986 | 81°F | 48°F | 0" | -- |
| 1985 | 87°F | 50°F | 0" | -- |
| 1984 | 71°F | 49°F | 0" | -- |
| 1983 | 82°F | 52°F | 0" | -- |
| 1982 | 86°F | 52°F | 0" | -- |
| 1981 | 72°F | 52°F | 0" | -- |
| 1980 | 77°F | 48°F | 0" | -- |
| 1979 | 94°F | 52°F | 0" | -- |
| 1978 | 78°F | 55°F | 0" | -- |
| 1977 | 72°F | 46°F | 0" | -- |
| 1976 | 101°F | 53°F | 0" | -- |
| 1975 | 70°F | 44°F | 0" | -- |
| 1974 | 80°F | 49°F | 0" | -- |
| 1973 | 86°F | 55°F | 0" | -- |
| 1972 | 99°F | 56°F | 0" | -- |
| 1971 | 84°F | 49°F | 0" | -- |
Based on 55 years of data from NOAA station: STOCKTON FIRE STN 4
Monthly Climate Averages
Historical temperature and precipitation averages for Stockton, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.