May weather in Ammon, ID
The average temperature in Ammon in May is 54.8°F (42.4°F–67.2°F). Average precipitation: 1.93 inches.
May is a spring month in Ammon, and is warmer than the annual average of 46.5°F. Daily temperatures swing about 24.8°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 14h 31m. For travel, May is a comfortable month to visit.
Avg High
67.2°F
Avg Low
42.4°F
Precipitation
1.93 in
Daylight
14h 31m
May records in Ammon
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 84.0°F (1985) | 19.9°F (1967) | 0.48 in (1964) |
| May 2 | 84.0°F (1985) | 19.9°F (1954) | 0.56 in (1999) |
| May 3 | 87.1°F (1966) | 26.1°F (1953) | 0.65 in (2024) |
| May 4 | 87.1°F (1966) | 25.0°F (1953) | 0.55 in (1993) |
| May 5 | 87.1°F (1966) | 19.9°F (1982) | 1.22 in (1995) |
| May 6 | 87.1°F (1992) | 27.0°F (1965) | 1.67 in (1993) |
| May 7 | 82.9°F (1992) | 24.1°F (1984) | 0.85 in (2000) |
| May 8 | 84.9°F (1987) | 25.0°F (2002) | 0.38 in (1986) |
| May 9 | 84.0°F (1954) | 24.1°F (2002) | 1.00 in (1982) |
| May 10 | 84.9°F (2025) | 25.0°F (1979) | 1.13 in (1985) |
| May 11 | 89.1°F (1960) | 24.1°F (1999) | 0.96 in (1981) |
| May 12 | 87.1°F (2001) | 24.1°F (1953) | 0.76 in (2018) |
| May 13 | 87.1°F (2013) | 25.0°F (1983) | 0.65 in (1998) |
| May 14 | 86.0°F (1984) | 26.1°F (1970) | 0.28 in (2025) |
| May 15 | 87.1°F (2012) | 24.1°F (1974) | 1.20 in (1955) |
| May 16 | 87.1°F (1987) | 30.0°F (1990) | 0.86 in (1996) |
| May 17 | 87.1°F (1958) | 28.0°F (1955) | 0.73 in (1987) |
| May 18 | 88.0°F (2006) | 28.0°F (2017) | 0.34 in (1978) |
| May 19 | 87.1°F (1958) | 24.1°F (2003) | 0.27 in (2005) |
| May 20 | 87.1°F (1958) | 27.0°F (2003) | 1.37 in (1974) |
| May 21 | 84.9°F (1958) | 28.9°F (2001) | 0.93 in (1952) |
| May 22 | 87.1°F (1967) | 30.0°F (1953) | 0.64 in (1971) |
| May 23 | 87.1°F (1979) | 21.9°F (1966) | 1.97 in (2023) |
| May 24 | 90.0°F (2003) | 28.0°F (1960) | 0.93 in (1953) |
| May 25 | 89.1°F (2003) | 26.1°F (1975) | 1.58 in (1979) |
| May 26 | 89.1°F (1966) | 26.1°F (1975) | 0.74 in (1996) |
| May 27 | 90.0°F (1966) | 27.0°F (1973) | 0.60 in (2015) |
| May 28 | 95.0°F (2003) | 27.0°F (1955) | 0.80 in (1982) |
| May 29 | 93.0°F (2003) | 30.9°F (1982) | 0.95 in (1999) |
| May 30 | 90.0°F (2003) | 30.9°F (1977) | 1.19 in (1999) |
| May 31 | 91.9°F (1986) | 30.0°F (1978) | 0.52 in (1955) |