June weather in San Marcos, CA
The average temperature in San Marcos in June is 71.1°F (60.2°F–81.9°F). Average precipitation: 0.09 inches.
June is a summer month in San Marcos, and is warmer than the annual average of 65.8°F. Daily temperatures swing about 21.7°F between overnight low and afternoon high. Expect about 1 days with precipitation. Daylight averages about 14h 9m. For travel, June is a comfortable month to visit.
Avg High
81.9°F
Avg Low
60.2°F
Precipitation
0.09 in
Daylight
14h 9m
June records in San Marcos
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| June 1 | 90.0°F (1996) | 35.1°F (2002) | 0.06 in (1983) |
| June 2 | 93.0°F (1996) | 48.9°F (1985) | 0.31 in (1999) |
| June 3 | 98.1°F (2016) | 51.1°F (2011) | 0.09 in (1985) |
| June 4 | 96.1°F (2006) | 48.9°F (1980) | 0.01 in (2025) |
| June 5 | 90.0°F (1981) | 45.0°F (2002) | 0.33 in (1993) |
| June 6 | 97.0°F (1985) | 51.1°F (1980) | 0.16 in (1993) |
| June 7 | 97.0°F (1985) | 46.9°F (1988) | 0.03 in (1979) |
| June 8 | 95.0°F (1985) | 46.9°F (1988) | 0.00 in (1979) |
| June 9 | 98.1°F (1979) | 46.9°F (1988) | 0.23 in (1990) |
| June 10 | 104.0°F (1979) | 48.9°F (2006) | 0.75 in (1990) |
| June 11 | 105.1°F (1979) | 54.0°F (2021) | 0.05 in (2003) |
| June 12 | 104.0°F (1979) | 51.1°F (1980) | 0.06 in (1998) |
| June 13 | 98.1°F (1979) | 48.0°F (1980) | 0.02 in (2015) |
| June 14 | 97.0°F (2018) | 50.0°F (1980) | 0.00 in (1979) |
| June 15 | 100.9°F (2025) | 52.0°F (1979) | 0.00 in (1979) |
| June 16 | 102.0°F (1981) | 51.1°F (2006) | 0.66 in (1995) |
| June 17 | 102.0°F (1981) | 50.0°F (2006) | 0.30 in (1995) |
| June 18 | 99.0°F (1981) | 53.1°F (1995) | 0.05 in (1982) |
| June 19 | 102.9°F (2016) | 48.9°F (1979) | 0.00 in (1979) |
| June 20 | 106.0°F (2016) | 46.0°F (2003) | 0.10 in (2003) |
| June 21 | 93.9°F (2017) | 41.0°F (2003) | 0.03 in (1982) |
| June 22 | 95.0°F (2024) | 46.0°F (2003) | 0.07 in (2022) |
| June 23 | 99.0°F (2024) | 52.0°F (1980) | 0.00 in (1979) |
| June 24 | 98.1°F (1992) | 48.0°F (2003) | 0.00 in (1979) |
| June 25 | 100.0°F (1994) | 51.1°F (1980) | 0.00 in (1979) |
| June 26 | 105.1°F (1994) | 54.0°F (1980) | 0.00 in (1979) |
| June 27 | 102.9°F (1990) | 55.0°F (2002) | 0.00 in (1979) |
| June 28 | 100.9°F (1980) | 54.0°F (1991) | 0.00 in (1979) |
| June 29 | 99.0°F (1996) | 55.0°F (1989) | 0.10 in (2020) |
| June 30 | 104.0°F (1985) | 48.9°F (2002) | 0.25 in (2015) |