August weather in Rancho Santa Margarita, CA
The average temperature in Rancho Santa Margarita in August is 76.2°F (62.2°F–90.2°F). Average precipitation: 0.01 inches.
August is a summer month in Rancho Santa Margarita, and is warmer than the annual average of 66.7°F. Daily temperatures swing about 28°F between overnight low and afternoon high. Expect about 0 days with precipitation. Daylight averages about 13h 15m. For travel, August is hot.
Avg High
90.2°F
Avg Low
62.2°F
Precipitation
0.01 in
Daylight
13h 15m
August records in Rancho Santa Margarita
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 99.0°F (2018) | 53.1°F (2010) | 0.00 in (2003) |
| August 2 | 99.0°F (2011) | 55.0°F (2010) | 0.00 in (2003) |
| August 3 | 96.1°F (2011) | 53.1°F (2010) | 0.05 in (2014) |
| August 4 | 96.1°F (2009) | 51.1°F (2011) | 0.15 in (2006) |
| August 5 | 98.1°F (2024) | 50.0°F (2011) | 0.00 in (2003) |
| August 6 | 100.0°F (2018) | 50.0°F (2011) | 0.00 in (2003) |
| August 7 | 100.0°F (2018) | 51.1°F (2011) | 0.00 in (2003) |
| August 8 | 100.0°F (2018) | 51.1°F (2013) | 0.00 in (2003) |
| August 9 | 100.9°F (2018) | 52.0°F (2013) | 0.00 in (2003) |
| August 10 | 100.0°F (2003) | 52.0°F (2010) | 0.00 in (2003) |
| August 11 | 98.1°F (2012) | 54.0°F (2010) | 0.00 in (2003) |
| August 12 | 99.0°F (2012) | 50.0°F (2010) | 0.00 in (2003) |
| August 13 | 97.0°F (2015) | 51.1°F (2010) | 0.00 in (2003) |
| August 14 | 100.9°F (2020) | 52.0°F (2010) | 0.00 in (2003) |
| August 15 | 106.0°F (2016) | 53.1°F (2010) | 0.00 in (2003) |
| August 16 | 99.0°F (2015) | 52.0°F (2004) | 0.00 in (2003) |
| August 17 | 100.9°F (2012) | 55.0°F (2011) | 0.00 in (2003) |
| August 18 | 107.1°F (2020) | 52.0°F (2005) | 0.00 in (2003) |
| August 19 | 100.0°F (2020) | 55.9°F (2005) | 0.00 in (2003) |
| August 20 | 99.0°F (2007) | 55.9°F (2009) | 2.42 in (2023) |
| August 21 | 98.1°F (2007) | 54.0°F (2010) | 0.02 in (2023) |
| August 22 | 95.0°F (2013) | 55.0°F (2011) | 0.00 in (2003) |
| August 23 | 99.0°F (2010) | 55.0°F (2010) | 0.00 in (2003) |
| August 24 | 100.0°F (2010) | 55.9°F (2011) | 0.00 in (2003) |
| August 25 | 100.9°F (2005) | 55.9°F (2011) | 0.00 in (2003) |
| August 26 | 102.0°F (2009) | 54.0°F (2004) | 0.00 in (2003) |
| August 27 | 104.0°F (2009) | 54.0°F (2012) | 0.00 in (2003) |
| August 28 | 104.0°F (2009) | 55.9°F (2006) | 0.00 in (2003) |
| August 29 | 102.9°F (2009) | 54.0°F (2010) | 0.00 in (2003) |
| August 30 | 100.0°F (2017) | 50.0°F (2010) | 0.00 in (2003) |
| August 31 | 102.9°F (2007) | 51.1°F (2010) | 0.00 in (2003) |