Weather on July 31
San Diego, CA
55 Years of Data
About This Date
July 31st in San Diego, CA typically brings pleasant summer weather, with average highs around 77°F and lows near 67°F. Over 55 years of records, the warmest July 31st was in 1980 (82°F average), while the coldest was 2010 (65°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 2% of July 31st dates historically, with the wettest July 31st recording 0.58" of rain. The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
Planning for July 31st in San Diego, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 72° | 64° | 68° | — | — |
| 2024 | 76° | 65° | 70° | — | — |
| 2023 | 78° | 69° | 74° | — | — |
| 2022 | 79° | 69° | 74° | — | — |
| 2021 | 77° | 65° | 71° | — | — |
| 2020 | 78° | 66° | 72° | — | — |
| 2019 | 76° | 65° | 70° | — | — |
| 2018 | 84° | 73° | 79° | — | — |
| 2017 | 78° | 70° | 74° | — | — |
| 2016 | 76° | 68° | 72° | — | — |
| 2015 | 79° | 70° | 74° | — | — |
| 2014 | 81° | 70° | 75° | — | — |
| 2013 | 71° | 65° | 68° | — | — |
| 2012 | 73° | 66° | 70° | — | — |
| 2011 | 76° | 68° | 72° | — | — |
| 2010coldest | 69° | 61° | 65° | — | — |
| 2009 | 75° | 67° | 71° | — | — |
| 2008 | 74° | 66° | 70° | — | — |
| 2007 | 73° | 67° | 70° | — | — |
| 2006 | 79° | 71° | 75° | — | — |
| 2005 | 76° | 68° | 72° | — | — |
| 2004 | 73° | 67° | 70° | — | — |
| 2003 | 74° | 69° | 71° | — | — |
| 2002 | 73° | 65° | 69° | — | — |
| 2001 | 71° | 64° | 68° | — | — |
| 2000 | 78° | 65° | 71° | — | — |
| 1999 | 72° | 63° | 67° | — | — |
| 1998 | 73° | 64° | 69° | — | — |
| 1997 | 74° | 64° | 69° | — | — |
| 1996 | 78° | 68° | 73° | — | — |
| 1995 | 76° | 65° | 70° | — | — |
| 1994 | 74° | 66° | 70° | — | — |
| 1993 | 76° | 66° | 71° | — | — |
| 1992 | 78° | 68° | 73° | — | — |
| 1991 | 74° | 64° | 69° | 0.58" | — |
| 1990 | 79° | 65° | 72° | — | — |
| 1989 | 77° | 67° | 72° | — | — |
| 1988 | 76° | 68° | 72° | — | — |
| 1987 | 78° | 62° | 70° | — | — |
| 1986 | 74° | 63° | 68° | — | — |
| 1985 | 77° | 70° | 73° | — | — |
| 1984 | 80° | 73° | 77° | — | — |
| 1983 | 79° | 69° | 74° | — | — |
| 1982 | 76° | 69° | 72° | — | — |
| 1981 | 78° | 70° | 74° | — | — |
| 1980warmest | 90° | 75° | 82° | — | — |
| 1979 | 82° | 69° | 76° | — | — |
| 1978 | 74° | 66° | 70° | — | — |
| 1977 | 82° | 71° | 77° | — | — |
| 1976 | 77° | 69° | 73° | — | — |
| 1975 | 76° | 65° | 70° | — | — |
| 1974 | 77° | 68° | 73° | — | — |
| 1973 | 77° | 66° | 72° | — | — |
| 1972 | 84° | 71° | 78° | — | — |
| 1971 | 81° | 69° | 75° | — | — |
San Diego, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
San Diego, CA Monthly Precipitation
Average rainfall per month, in inches.
San Diego, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit San Diego, CA
Most pleasant months in San Diego, CA: June.