May weather in Harpers Ferry, IA
The average temperature in Harpers Ferry in May is 59.4°F (48.7°F–70.1°F). Average precipitation: 4.68 inches.
May is a spring month in Harpers Ferry, and is warmer than the annual average of 47.4°F. Daily temperatures swing about 21.4°F between overnight low and afternoon high. Expect about 13 days with precipitation. Daylight averages about 14h 29m. For travel, May is a comfortable month to visit.
Avg High
70.1°F
Avg Low
48.7°F
Precipitation
4.68 in
Daylight
14h 29m
May records in Harpers Ferry
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 87.1°F (1952) | 28.9°F (1978) | 2.22 in (1997) |
| May 2 | 88.0°F (1959) | 32.0°F (1966) | 2.64 in (1993) |
| May 3 | 89.1°F (1949) | 28.9°F (2005) | 1.26 in (1979) |
| May 4 | 90.0°F (1959) | 32.0°F (1954) | 2.28 in (2018) |
| May 5 | 90.0°F (1949) | 30.9°F (1953) | 1.28 in (1982) |
| May 6 | 86.0°F (2016) | 27.0°F (1989) | 1.59 in (1948) |
| May 7 | 84.0°F (1964) | 27.0°F (1989) | 1.49 in (1960) |
| May 8 | 84.9°F (1963) | 33.1°F (1976) | 1.29 in (1960) |
| May 9 | 86.0°F (1979) | 30.0°F (1966) | 2.10 in (2002) |
| May 10 | 90.0°F (2011) | 28.9°F (1995) | 1.03 in (1960) |
| May 11 | 87.1°F (2011) | 34.0°F (1966) | 1.94 in (1967) |
| May 12 | 91.9°F (2022) | 33.1°F (1960) | 1.23 in (1962) |
| May 13 | 93.9°F (2022) | 33.1°F (1953) | 1.90 in (1978) |
| May 14 | 93.0°F (2013) | 35.1°F (1966) | 1.33 in (1974) |
| May 15 | 89.1°F (2001) | 33.1°F (2016) | 1.01 in (2023) |
| May 16 | 89.1°F (1962) | 34.0°F (1997) | 2.03 in (1964) |
| May 17 | 88.0°F (1987) | 36.0°F (1973) | 1.65 in (1999) |
| May 18 | 89.1°F (1962) | 37.0°F (1945) | 1.71 in (2000) |
| May 19 | 90.0°F (1972) | 37.0°F (2002) | 2.87 in (1971) |
| May 20 | 89.1°F (1972) | 37.9°F (2002) | 1.28 in (2013) |
| May 21 | 90.0°F (1970) | 37.9°F (1997) | 1.57 in (1977) |
| May 22 | 91.9°F (1972) | 33.1°F (1967) | 5.89 in (2004) |
| May 23 | 89.1°F (1972) | 34.0°F (1963) | 1.61 in (2004) |
| May 24 | 91.9°F (2010) | 39.9°F (1979) | 1.17 in (1964) |
| May 25 | 90.0°F (1977) | 37.0°F (1979) | 2.00 in (1984) |
| May 26 | 91.0°F (1967) | 36.0°F (1961) | 1.98 in (1991) |
| May 27 | 93.0°F (2018) | 37.9°F (1971) | 1.45 in (2015) |
| May 28 | 93.0°F (2018) | 33.1°F (1947) | 1.78 in (1995) |
| May 29 | 91.9°F (2006) | 33.1°F (1947) | 1.68 in (1947) |
| May 30 | 90.0°F (1953) | 37.9°F (1947) | 2.15 in (2004) |
| May 31 | 90.0°F (1988) | 39.0°F (1972) | 1.54 in (1942) |