May weather in Altoona, IA
The average temperature in Altoona in May is 61.1°F (50.3°F–71.9°F). Average precipitation: 5.26 inches.
May is a spring month in Altoona, and is warmer than the annual average of 49.5°F. Daily temperatures swing about 21.6°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 14h 21m. For travel, May is a wet month.
Avg High
71.9°F
Avg Low
50.3°F
Precipitation
5.26 in
Daylight
14h 21m
May records in Altoona
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 90.0°F (2007) | 30.9°F (1994) | 1.66 in (2003) |
| May 2 | 88.0°F (1965) | 28.9°F (1961) | 1.30 in (1954) |
| May 3 | 89.1°F (1968) | 26.1°F (2005) | 1.18 in (1963) |
| May 4 | 89.1°F (1952) | -31.0°F (1999) | 1.05 in (1993) |
| May 5 | 90.0°F (1966) | -22.0°F (1999) | 1.73 in (2003) |
| May 6 | 89.1°F (2012) | 1.9°F (1999) | 1.35 in (1960) |
| May 7 | 91.9°F (1966) | -14.1°F (1999) | 1.49 in (1998) |
| May 8 | 91.9°F (1966) | -13.0°F (1999) | 1.64 in (1950) |
| May 9 | 89.1°F (1963) | 30.9°F (1966) | 1.68 in (2003) |
| May 10 | 88.0°F (1963) | 30.9°F (2020) | 1.96 in (1996) |
| May 11 | 99.0°F (2011) | 33.1°F (1981) | 2.65 in (1970) |
| May 12 | 93.9°F (2000) | 32.0°F (2006) | 1.78 in (1999) |
| May 13 | 91.9°F (1956) | 30.9°F (1997) | 2.25 in (2005) |
| May 14 | 91.9°F (1988) | 35.1°F (1959) | 2.19 in (1970) |
| May 15 | 93.9°F (2013) | 30.9°F (1997) | 1.03 in (1986) |
| May 16 | 91.0°F (2012) | 30.9°F (1997) | 1.00 in (1952) |
| May 17 | 93.0°F (2019) | 36.0°F (2009) | 1.10 in (1969) |
| May 18 | 91.0°F (1967) | 34.0°F (2002) | 2.03 in (2004) |
| May 19 | 91.0°F (2012) | 34.0°F (2002) | 1.24 in (2000) |
| May 20 | 93.0°F (1998) | 34.0°F (2002) | 2.00 in (1998) |
| May 21 | 93.0°F (1998) | 37.9°F (1968) | 0.94 in (1962) |
| May 22 | 90.0°F (1964) | 32.0°F (1963) | 1.83 in (1999) |
| May 23 | 91.0°F (1970) | 36.0°F (1963) | 2.41 in (1981) |
| May 24 | 91.9°F (2012) | 42.1°F (1963) | 2.45 in (2019) |
| May 25 | 98.1°F (1967) | 39.9°F (1992) | 1.94 in (2011) |
| May 26 | 97.0°F (1967) | 34.0°F (1961) | 1.44 in (2020) |
| May 27 | 93.0°F (1967) | 36.0°F (1992) | 2.06 in (2009) |
| May 28 | 95.0°F (2012) | 37.9°F (1965) | 2.20 in (1954) |
| May 29 | 91.0°F (2006) | 37.9°F (1952) | 1.36 in (2019) |
| May 30 | 90.0°F (1953) | 39.9°F (1965) | 1.38 in (2008) |
| May 31 | 93.0°F (2010) | 37.0°F (1972) | 2.33 in (2000) |