Weather on June 30
San Marcos, CA
55 Years of Data
About This Date
June 30th in San Marcos, CA typically brings warm summer weather, with average highs around 85°F and lows near 60°F — a 25°F daily swing. Over 55 years of records, the warmest June 30th was in 1985 (84°F average), while the coldest was 1982 (65°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 2% of June 30th dates historically, with the wettest June 30th recording 0.64" of rain. The last decade has been 4.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.7°F warmer on this date compared to 20-30 years ago.
Planning for June 30th in San Marcos, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 91° | 62° | 77° | — | — |
| 2024 | 95° | 63° | 79° | — | — |
| 2023 | 89° | 60° | 75° | — | — |
| 2022 | 92° | 65° | 78° | — | — |
| 2021 | 86° | 63° | 74° | — | — |
| 2020 | 80° | 59° | 70° | — | — |
| 2019 | 94° | 67° | 80° | — | — |
| 2018 | 82° | 62° | 72° | — | — |
| 2017 | 83° | 62° | 72° | — | — |
| 2016 | 88° | 66° | 77° | — | — |
| 2015 | 89° | 66° | 78° | 0.64" | — |
| 2014 | 83° | 64° | 73° | — | — |
| 2013 | 92° | 70° | 81° | — | — |
| 2012 | 86° | 51° | 69° | — | — |
| 2011 | 84° | 59° | 72° | — | — |
| 2010 | 70° | 62° | 66° | — | — |
| 2009 | 71° | 62° | 67° | — | — |
| 2008 | 73° | 64° | 69° | — | — |
| 2007 | 74° | 62° | 68° | — | — |
| 2006 | 82° | 66° | 74° | — | — |
| 2005 | 82° | 58° | 70° | — | — |
| 2004 | 77° | 59° | 68° | — | — |
| 2003 | 73° | 61° | 67° | — | — |
| 2002 | 81° | 49° | 65° | — | — |
| 2001 | 88° | 62° | 75° | — | — |
| 2000 | 86° | 62° | 74° | — | — |
| 1999 | 70° | 61° | 65° | — | — |
| 1998 | 89° | 59° | 74° | — | — |
| 1997 | 83° | 59° | 71° | — | — |
| 1996 | 99° | 58° | 78° | — | — |
| 1995 | 88° | 59° | 73° | — | — |
| 1994 | 89° | 64° | 77° | — | — |
| 1993 | 89° | 59° | 74° | — | — |
| 1992 | 82° | 60° | 71° | — | — |
| 1991 | 83° | 56° | 69° | — | — |
| 1990 | 92° | 61° | 76° | — | — |
| 1989 | 80° | 54° | 67° | — | — |
| 1988 | 80° | 62° | 71° | — | — |
| 1987 | 74° | 60° | 67° | — | — |
| 1986 | 92° | 65° | 78° | — | — |
| 1985warmest | 104° | 64° | 84° | — | — |
| 1984 | 90° | 60° | 75° | — | — |
| 1983 | 79° | 62° | 70° | — | — |
| 1982coldest | 74° | 57° | 65° | — | — |
| 1981 | 88° | 59° | 73° | — | — |
| 1980 | 92° | 63° | 77° | — | — |
| 1979 | 93° | 60° | 77° | — | — |
| 1978 | 84° | 54° | 69° | — | — |
| 1977 | 88° | 59° | 73° | — | — |
| 1976 | 91° | 59° | 75° | — | — |
| 1975 | 87° | 51° | 69° | — | — |
| 1974 | 83° | 58° | 70° | — | — |
| 1973 | 88° | 61° | 74° | — | — |
| 1972 | 87° | 59° | 73° | — | — |
| 1971 | 82° | 53° | 68° | — | — |
San Marcos, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
San Marcos, CA Monthly Precipitation
Average rainfall per month, in inches.
San Marcos, 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 Marcos, CA
Most pleasant months in San Marcos, CA: June.