August weather in Irmo, SC
The average temperature in Irmo in August is 77.9°F (67.6°F–88.3°F). Average precipitation: 5.11 inches.
August is a summer month in Irmo, and is warmer than the annual average of 60.2°F. Daily temperatures swing about 20.7°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 13h 16m. For travel, August is a wet month.
Avg High
88.3°F
Avg Low
67.6°F
Precipitation
5.11 in
Daylight
13h 16m
August records in Irmo
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 102.0°F (1999) | 48.9°F (1997) | 1.22 in (2000) |
| August 2 | 105.1°F (1999) | 50.0°F (1997) | 1.40 in (2025) |
| August 3 | 100.0°F (2012) | 53.1°F (1997) | 2.23 in (2016) |
| August 4 | 102.0°F (2011) | 59.0°F (1997) | 2.65 in (2000) |
| August 5 | 100.9°F (2006) | 57.9°F (1999) | 1.25 in (2016) |
| August 6 | 100.0°F (2002) | 59.0°F (1999) | 2.68 in (2025) |
| August 7 | 102.0°F (2002) | 57.0°F (1994) | 1.37 in (2013) |
| August 8 | 100.9°F (2007) | 46.0°F (2002) | 1.57 in (2010) |
| August 9 | 104.0°F (2007) | 41.0°F (2002) | 1.02 in (2014) |
| August 10 | 105.1°F (2007) | 48.9°F (2002) | 1.42 in (2012) |
| August 11 | 106.0°F (2007) | 48.9°F (2002) | 1.98 in (1996) |
| August 12 | 102.0°F (1999) | 52.0°F (2002) | 2.15 in (2025) |
| August 13 | 100.0°F (1999) | 57.9°F (2002) | 4.05 in (2008) |
| August 14 | 102.0°F (1999) | 55.9°F (2002) | 3.25 in (2005) |
| August 15 | 102.0°F (1995) | 57.0°F (2008) | 0.71 in (2011) |
| August 16 | 100.0°F (2007) | 57.9°F (1996) | 2.89 in (2010) |
| August 17 | 100.9°F (2007) | 57.9°F (1993) | 2.71 in (2013) |
| August 18 | 100.9°F (1995) | 61.0°F (2023) | 1.36 in (2012) |
| August 19 | 102.0°F (1995) | 62.1°F (1996) | 1.48 in (2016) |
| August 20 | 102.0°F (1999) | 50.0°F (2002) | 1.60 in (2012) |
| August 21 | 98.1°F (2002) | 59.0°F (2024) | 1.26 in (2019) |
| August 22 | 102.0°F (2007) | 55.9°F (2000) | 1.57 in (2021) |
| August 23 | 100.9°F (2007) | 52.0°F (1997) | 0.90 in (2005) |
| August 24 | 100.0°F (2002) | 50.0°F (1997) | 1.33 in (2006) |
| August 25 | 100.0°F (2002) | 50.0°F (1997) | 0.80 in (2002) |
| August 26 | 95.0°F (2007) | 50.0°F (1997) | 3.13 in (2008) |
| August 27 | 98.1°F (2023) | 53.1°F (2013) | 2.45 in (1995) |
| August 28 | 96.1°F (2011) | 55.0°F (2014) | 0.53 in (2002) |
| August 29 | 98.1°F (2018) | 55.9°F (2014) | 0.34 in (2012) |
| August 30 | 96.1°F (1993) | 53.1°F (2019) | 0.05 in (2002) |
| August 31 | 97.0°F (1993) | 48.0°F (1999) | 1.70 in (2015) |