August weather in Royal, IA
The average temperature in Royal in August is 70.6°F (59.2°F–81.9°F). Average precipitation: 3.29 inches.
August is a summer month in Royal, and is warmer than the annual average of 46.8°F. Daily temperatures swing about 22.7°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 13h 46m. For travel, August is a comfortable month to visit.
Avg High
81.9°F
Avg Low
59.2°F
Precipitation
3.29 in
Daylight
13h 46m
August records in Royal
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 96.1°F (2011) | 52.0°F (2013) | 1.56 in (2006) |
| August 2 | 100.0°F (2022) | 46.0°F (2002) | 1.12 in (2006) |
| August 3 | 95.0°F (2008) | 46.0°F (2020) | 0.95 in (2004) |
| August 4 | 91.9°F (2001) | 46.9°F (2017) | 1.78 in (2007) |
| August 5 | 93.0°F (2001) | 48.0°F (2017) | 2.63 in (2023) |
| August 6 | 91.9°F (2001) | 48.0°F (2004) | 1.02 in (1998) |
| August 7 | 93.9°F (2001) | 51.1°F (2024) | 1.24 in (2000) |
| August 8 | 93.0°F (2005) | 48.9°F (2017) | 0.98 in (2010) |
| August 9 | 96.1°F (2005) | 50.0°F (2024) | 0.85 in (2017) |
| August 10 | 93.0°F (2016) | 46.0°F (2024) | 2.97 in (2010) |
| August 11 | 91.0°F (2007) | 45.0°F (2004) | 1.25 in (2016) |
| August 12 | 91.9°F (2000) | 44.1°F (2004) | 1.14 in (2002) |
| August 13 | 91.9°F (2020) | 41.0°F (2004) | 0.43 in (2008) |
| August 14 | 91.0°F (2000) | 41.0°F (2004) | 0.56 in (2024) |
| August 15 | 91.0°F (2003) | 43.0°F (2004) | 0.90 in (2014) |
| August 16 | 97.0°F (2003) | -0.8°F (2010) | 1.34 in (2017) |
| August 17 | 97.0°F (2003) | 39.0°F (2012) | 1.71 in (2015) |
| August 18 | 97.0°F (2003) | 42.1°F (2002) | 1.75 in (2007) |
| August 19 | 93.0°F (2023) | 37.0°F (2004) | 2.14 in (2007) |
| August 20 | 91.0°F (2003) | 43.0°F (2004) | 0.78 in (2007) |
| August 21 | 93.9°F (2020) | 36.0°F (2004) | 1.57 in (2017) |
| August 22 | 98.1°F (2023) | 46.0°F (1997) | 0.44 in (2007) |
| August 23 | 97.0°F (2020) | 46.0°F (2008) | 1.28 in (2010) |
| August 24 | 99.0°F (2020) | 44.1°F (2008) | 0.37 in (1998) |
| August 25 | 99.0°F (2020) | 39.9°F (2015) | 2.08 in (2012) |
| August 26 | 97.0°F (2020) | 41.0°F (2015) | 1.40 in (2017) |
| August 27 | 95.0°F (2020) | 50.0°F (2005) | 1.23 in (2021) |
| August 28 | 93.9°F (2013) | 48.9°F (2005) | 2.00 in (2021) |
| August 29 | 93.9°F (2012) | 44.1°F (2004) | 1.16 in (2024) |
| August 30 | 96.1°F (2000) | 37.9°F (2009) | 0.29 in (2016) |
| August 31 | 89.1°F (2013) | 36.0°F (2009) | 0.33 in (2014) |