August weather in Alamosa, CO
The average temperature in Alamosa in August is 62.7°F (45.1°F–80.4°F). Average precipitation: 1.43 inches.
August is a summer month in Alamosa, and is warmer than the annual average of 42.6°F. Daily temperatures swing about 35.3°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 13h 27m. For travel, August is a comfortable month to visit.
Avg High
80.4°F
Avg Low
45.1°F
Precipitation
1.43 in
Daylight
13h 27m
August records in Alamosa
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 89.1°F (2008) | 36.0°F (2009) | 0.22 in (2021) |
| August 2 | 88.0°F (2020) | 37.9°F (2009) | 0.77 in (2013) |
| August 3 | 89.1°F (2024) | 39.0°F (2009) | 0.19 in (2006) |
| August 4 | 89.1°F (2024) | 39.9°F (2025) | 0.14 in (2018) |
| August 5 | 89.1°F (2020) | 39.0°F (2025) | 0.72 in (2016) |
| August 6 | 90.0°F (2024) | 39.9°F (2025) | 0.70 in (2016) |
| August 7 | 90.0°F (2015) | 41.0°F (2007) | 0.26 in (2006) |
| August 8 | 91.0°F (2025) | 35.1°F (2011) | 0.72 in (2022) |
| August 9 | 90.0°F (2025) | 28.9°F (2009) | 0.13 in (2013) |
| August 10 | 89.1°F (2025) | 32.0°F (2009) | 0.63 in (2024) |
| August 11 | 89.1°F (2020) | 37.0°F (2010) | 0.70 in (2013) |
| August 12 | 88.0°F (2020) | 41.0°F (2009) | 0.66 in (2019) |
| August 13 | 88.0°F (2020) | 39.9°F (2010) | 0.33 in (2023) |
| August 14 | 90.0°F (2020) | 36.0°F (2010) | 0.55 in (2024) |
| August 15 | 90.0°F (2015) | 41.0°F (2009) | 0.00 in (2006) |
| August 16 | 89.1°F (2015) | 35.1°F (2009) | 0.13 in (2007) |
| August 17 | 90.0°F (2020) | 32.0°F (2009) | 0.61 in (2022) |
| August 18 | 88.0°F (2011) | 35.1°F (2009) | 0.44 in (2022) |
| August 19 | 89.1°F (2020) | 34.0°F (2009) | 0.11 in (2006) |
| August 20 | 93.0°F (2020) | 35.1°F (2009) | 0.13 in (2006) |
| August 21 | 91.0°F (2020) | 37.0°F (2008) | 0.43 in (2024) |
| August 22 | 90.0°F (2025) | 37.9°F (2008) | 0.26 in (2024) |
| August 23 | 90.0°F (2025) | 41.0°F (2008) | 0.52 in (2014) |
| August 24 | 89.1°F (2020) | 39.0°F (2015) | 0.12 in (2016) |
| August 25 | 91.0°F (2020) | 36.0°F (2021) | 0.11 in (2011) |
| August 26 | 88.0°F (2015) | 34.0°F (2009) | 0.40 in (2023) |
| August 27 | 88.0°F (2020) | 35.1°F (2009) | 0.43 in (2014) |
| August 28 | 88.0°F (2021) | 34.0°F (2009) | 0.22 in (2013) |
| August 29 | 89.1°F (2021) | 36.0°F (2006) | 0.27 in (2020) |
| August 30 | 87.1°F (2012) | 39.0°F (2007) | 0.28 in (2011) |
| August 31 | 86.0°F (2013) | 39.9°F (2006) | 0.01 in (2011) |