August weather in Letcher, SD
The average temperature in Letcher in August is 72.2°F (60.5°F–83.9°F). Average precipitation: 3.14 inches.
August is a summer month in Letcher, and is warmer than the annual average of 47.7°F. Daily temperatures swing about 23.4°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 13h 49m. For travel, August is a comfortable month to visit.
Avg High
83.9°F
Avg Low
60.5°F
Precipitation
3.14 in
Daylight
13h 49m
August records in Letcher
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 105.1°F (2011) | 53.1°F (2009) | 0.38 in (2006) |
| August 2 | 107.1°F (2022) | 46.9°F (2002) | 0.55 in (2019) |
| August 3 | 100.0°F (2002) | 51.1°F (2020) | 0.96 in (2004) |
| August 4 | 99.0°F (2001) | 52.0°F (2017) | 0.74 in (2003) |
| August 5 | 102.0°F (2022) | 52.0°F (2012) | 3.29 in (2000) |
| August 6 | 97.0°F (2001) | 54.0°F (2016) | 2.18 in (2023) |
| August 7 | 99.0°F (2001) | 54.0°F (2017) | 1.01 in (2000) |
| August 8 | 98.1°F (2001) | 52.0°F (2017) | 0.22 in (2009) |
| August 9 | 93.9°F (2016) | 46.9°F (2024) | 1.49 in (2015) |
| August 10 | 97.0°F (2016) | 46.9°F (2024) | 2.18 in (2013) |
| August 11 | 93.9°F (2010) | 50.0°F (2004) | 0.66 in (2008) |
| August 12 | 102.0°F (2022) | 48.9°F (2014) | 0.46 in (2006) |
| August 13 | 93.9°F (2007) | 50.0°F (2012) | 1.47 in (2006) |
| August 14 | 93.9°F (2000) | 44.1°F (2004) | 0.55 in (2024) |
| August 15 | 93.0°F (2003) | 54.0°F (2004) | 1.31 in (2009) |
| August 16 | 93.0°F (2003) | 50.0°F (2012) | 0.99 in (2017) |
| August 17 | 97.0°F (2003) | 44.1°F (2012) | 0.57 in (2019) |
| August 18 | 95.0°F (2016) | 45.0°F (2002) | 1.73 in (2015) |
| August 19 | 93.9°F (2023) | 44.1°F (2002) | 1.57 in (2003) |
| August 20 | 91.0°F (2019) | 46.9°F (2004) | 2.28 in (2002) |
| August 21 | 95.0°F (2023) | 46.0°F (2004) | 0.06 in (2017) |
| August 22 | 104.0°F (2023) | 48.0°F (2009) | 1.01 in (2002) |
| August 23 | 100.9°F (2023) | 50.0°F (2008) | 1.82 in (2014) |
| August 24 | 97.0°F (2003) | 45.0°F (2015) | 0.09 in (2002) |
| August 25 | 98.1°F (2020) | 43.0°F (2025) | 1.46 in (2017) |
| August 26 | 96.1°F (2001) | 46.9°F (2016) | 1.35 in (2019) |
| August 27 | 96.1°F (2012) | 51.1°F (2009) | 0.45 in (2021) |
| August 28 | 100.0°F (2012) | 48.9°F (2005) | 0.90 in (2014) |
| August 29 | 102.9°F (2012) | 48.0°F (2000) | 0.11 in (2014) |
| August 30 | 98.1°F (2000) | 46.0°F (2004) | 2.31 in (2010) |
| August 31 | 95.0°F (2013) | 46.9°F (2001) | 0.83 in (2004) |