August weather in Arvada, CO
The average temperature in Arvada in August is 71.6°F (58.9°F–84.4°F). Average precipitation: 1.84 inches.
August is a summer month in Arvada, and is warmer than the annual average of 51.5°F. Daily temperatures swing about 25.5°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 13h 34m. For travel, August is a comfortable month to visit.
Avg High
84.4°F
Avg Low
58.9°F
Precipitation
1.84 in
Daylight
13h 34m
August records in Arvada
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 97.0°F (2002) | 50.0°F (2009) | 0.96 in (2023) |
| August 2 | 99.0°F (2008) | 42.1°F (1978) | 0.32 in (1999) |
| August 3 | 98.1°F (2024) | 50.0°F (1978) | 0.26 in (1994) |
| August 4 | 96.1°F (2024) | 48.0°F (1978) | 1.62 in (2006) |
| August 5 | 96.1°F (2025) | 50.0°F (1978) | 2.13 in (1999) |
| August 6 | 98.1°F (2025) | 53.1°F (1997) | 1.47 in (1997) |
| August 7 | 96.1°F (2003) | 53.1°F (1997) | 0.80 in (2008) |
| August 8 | 96.1°F (2020) | 51.1°F (2017) | 1.03 in (1989) |
| August 9 | 96.1°F (2000) | 52.0°F (1978) | 0.15 in (1992) |
| August 10 | 97.0°F (2000) | 53.1°F (2002) | 1.58 in (2001) |
| August 11 | 93.9°F (2022) | 52.0°F (1997) | 0.72 in (1994) |
| August 12 | 96.1°F (2022) | 50.0°F (1997) | 0.49 in (1994) |
| August 13 | 91.9°F (2020) | 45.0°F (2002) | 0.80 in (2013) |
| August 14 | 99.0°F (2025) | 51.1°F (2004) | 2.10 in (2005) |
| August 15 | 95.0°F (2025) | 46.9°F (1978) | 0.78 in (1979) |
| August 16 | 95.0°F (2015) | 46.9°F (2008) | 1.00 in (2008) |
| August 17 | 99.0°F (2002) | 46.0°F (2008) | 1.15 in (2008) |
| August 18 | 97.0°F (2024) | 46.9°F (2008) | 0.70 in (2000) |
| August 19 | 96.1°F (2011) | 45.0°F (2015) | 1.95 in (2004) |
| August 20 | 95.0°F (2019) | 33.1°F (2015) | 0.85 in (2010) |
| August 21 | 98.1°F (2019) | 51.1°F (2004) | 1.45 in (1982) |
| August 22 | 98.1°F (2023) | 55.9°F (2000) | 0.50 in (2019) |
| August 23 | 95.0°F (2020) | 53.1°F (2005) | 0.52 in (1987) |
| August 24 | 95.0°F (2023) | 52.0°F (2010) | 1.65 in (1992) |
| August 25 | 93.9°F (2020) | 48.0°F (2016) | 1.03 in (1992) |
| August 26 | 96.1°F (2011) | 48.0°F (2016) | 0.49 in (1987) |
| August 27 | 91.0°F (2012) | 48.9°F (2006) | 0.25 in (1997) |
| August 28 | 93.0°F (2020) | 44.1°F (2004) | 0.60 in (2023) |
| August 29 | 93.0°F (2011) | 48.9°F (2006) | 0.16 in (2000) |
| August 30 | 91.9°F (2012) | 45.0°F (1978) | 0.52 in (2003) |
| August 31 | 93.0°F (1998) | 46.0°F (2005) | 0.22 in (2003) |