May weather in Ames, IA
The average temperature in Ames in May is 60.7°F (49.5°F–71.8°F). Average precipitation: 5.16 inches.
May is a spring month in Ames, and is warmer than the annual average of 48.6°F. Daily temperatures swing about 22.3°F between overnight low and afternoon high. Expect about 14 days with precipitation. Daylight averages about 14h 23m. For travel, May is a wet month.
Avg High
71.8°F
Avg Low
49.5°F
Precipitation
5.16 in
Daylight
14h 23m
May records in Ames
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 90.0°F (2021) | 33.1°F (1997) | 3.08 in (2018) |
| May 2 | 84.0°F (2021) | 28.0°F (2005) | 1.50 in (2013) |
| May 3 | 82.9°F (2012) | 24.1°F (2005) | 0.81 in (2018) |
| May 4 | 87.1°F (2000) | 23.0°F (2005) | 1.55 in (2003) |
| May 5 | 86.0°F (2000) | 35.1°F (2004) | 1.39 in (2023) |
| May 6 | 88.0°F (2016) | 31.1°F (2006) | 1.38 in (2008) |
| May 7 | 86.0°F (2000) | 37.9°F (2020) | 1.42 in (2024) |
| May 8 | 86.0°F (2004) | 34.0°F (2010) | 1.83 in (2022) |
| May 9 | 90.0°F (2022) | 28.2°F (2020) | 1.69 in (2013) |
| May 10 | 93.0°F (2011) | 32.0°F (1997) | 1.07 in (2017) |
| May 11 | 97.0°F (2000) | 37.0°F (2009) | 1.82 in (2002) |
| May 12 | 91.0°F (2022) | 33.1°F (2021) | 1.69 in (2005) |
| May 13 | 84.9°F (2007) | 28.9°F (1997) | 1.05 in (2003) |
| May 14 | 93.9°F (2013) | 35.1°F (2014) | 0.71 in (2015) |
| May 15 | 91.9°F (2012) | 32.0°F (1997) | 0.31 in (2011) |
| May 16 | 91.0°F (2019) | 32.0°F (1997) | 0.69 in (2017) |
| May 17 | 87.1°F (1998) | 34.0°F (2014) | 0.92 in (2020) |
| May 18 | 91.9°F (1997) | 37.0°F (2002) | 1.03 in (2019) |
| May 19 | 91.9°F (1998) | 37.0°F (2015) | 2.15 in (2013) |
| May 20 | 87.1°F (2014) | 35.1°F (1997) | 3.01 in (2014) |
| May 21 | 88.0°F (2004) | 35.1°F (1997) | 2.65 in (2024) |
| May 22 | 88.0°F (2000) | 39.0°F (2003) | 4.85 in (2004) |
| May 23 | 88.0°F (2012) | 39.9°F (2025) | 1.89 in (2008) |
| May 24 | 89.1°F (2010) | 42.1°F (2013) | 1.91 in (2019) |
| May 25 | 88.0°F (2010) | 41.0°F (2017) | 1.92 in (2020) |
| May 26 | 93.9°F (2018) | 41.0°F (1999) | 3.68 in (2009) |
| May 27 | 98.1°F (2018) | 42.1°F (2023) | 0.71 in (2013) |
| May 28 | 98.1°F (2018) | 42.1°F (2021) | 1.23 in (1998) |
| May 29 | 93.0°F (2018) | 37.0°F (2021) | 2.33 in (2008) |
| May 30 | 93.0°F (2002) | 43.0°F (1997) | 1.29 in (2007) |
| May 31 | 93.0°F (2018) | 44.1°F (2001) | 0.93 in (2001) |