May weather in Alamosa, CO
The average temperature in Alamosa in May is 51.6°F (33.9°F–69.2°F). Average precipitation: 0.65 inches. Average snowfall is 0.8 inches.
May is a spring 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 6 days with precipitation. Daylight averages about 14h 1m. For travel, May is cool.
Avg High
69.2°F
Avg Low
33.9°F
Precipitation
0.65 in
Snow
0.8 in
May records in Alamosa
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 79.0°F (2024) | 15.1°F (2010) | 0.09 in (2016) |
| May 2 | 81.0°F (2020) | 12.0°F (2011) | 0.12 in (2011) |
| May 3 | 77.0°F (2020) | 10.9°F (2011) | 0.09 in (2010) |
| May 4 | 78.1°F (2020) | 19.0°F (2008) | 0.02 in (2009) |
| May 5 | 78.1°F (2012) | 18.0°F (2011) | 0.43 in (2025) |
| May 6 | 78.1°F (2012) | 19.9°F (2007) | 0.52 in (2025) |
| May 7 | 80.1°F (2022) | 21.9°F (2007) | 0.38 in (2025) |
| May 8 | 80.1°F (2020) | 26.1°F (2011) | 0.58 in (2012) |
| May 9 | 82.9°F (2018) | 19.9°F (2013) | 0.45 in (2019) |
| May 10 | 80.1°F (2018) | 19.9°F (2006) | 0.55 in (2024) |
| May 11 | 80.1°F (2018) | 18.0°F (2008) | 0.92 in (2017) |
| May 12 | 78.1°F (2022) | 21.9°F (2010) | 0.28 in (2023) |
| May 13 | 78.1°F (2022) | 23.0°F (2010) | 0.27 in (2014) |
| May 14 | 78.1°F (2013) | 21.9°F (2014) | 0.76 in (2023) |
| May 15 | 79.0°F (2013) | 26.1°F (2025) | 0.23 in (2008) |
| May 16 | 80.1°F (2022) | 23.0°F (2025) | 0.22 in (2024) |
| May 17 | 79.0°F (2018) | 27.0°F (2015) | 0.02 in (2015) |
| May 18 | 82.0°F (2022) | 28.0°F (2011) | 0.76 in (2021) |
| May 19 | 82.9°F (2020) | 26.1°F (2017) | 0.93 in (2015) |
| May 20 | 81.0°F (2008) | 21.9°F (2011) | 0.27 in (2023) |
| May 21 | 82.9°F (2008) | 23.0°F (2011) | 0.25 in (2023) |
| May 22 | 80.1°F (2012) | 25.0°F (2024) | 0.51 in (2009) |
| May 23 | 82.0°F (2012) | 28.9°F (2024) | 0.16 in (2009) |
| May 24 | 79.0°F (2006) | 25.0°F (2021) | 0.27 in (2007) |
| May 25 | 82.0°F (2006) | 21.0°F (2010) | 0.12 in (2022) |
| May 26 | 82.9°F (2018) | 28.0°F (2010) | 0.02 in (2009) |
| May 27 | 80.1°F (2022) | 28.0°F (2013) | 0.16 in (2009) |
| May 28 | 82.9°F (2020) | 21.0°F (2012) | 0.10 in (2020) |
| May 29 | 82.0°F (2020) | 27.0°F (2012) | 0.04 in (2020) |
| May 30 | 84.0°F (2020) | 27.0°F (2012) | 0.10 in (2019) |
| May 31 | 82.9°F (2020) | 24.1°F (2011) | 0.39 in (2025) |