May weather in Alton, UT
The average temperature in Alton in May is 52.3°F (35.2°F–69.4°F). Average precipitation: 0.87 inches. Average snowfall is 0.3 inches.
May is a spring month in Alton, and is warmer than the annual average of 47.3°F. Daily temperatures swing about 34.2°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 14h 1m. For travel, May is cool.
Avg High
69.4°F
Avg Low
35.2°F
Precipitation
0.87 in
Snow
0.3 in
May records in Alton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 80.1°F (1947) | 16.0°F (1967) | 1.20 in (1915) |
| May 2 | 82.9°F (1947) | 15.1°F (2008) | 0.62 in (1915) |
| May 3 | 84.9°F (1947) | 5.0°F (1915) | 0.63 in (1999) |
| May 4 | 81.0°F (1947) | 17.1°F (1999) | 0.83 in (1930) |
| May 5 | 80.1°F (1947) | 19.0°F (1950) | 0.52 in (2025) |
| May 6 | 79.0°F (2022) | 9.0°F (1975) | 0.53 in (1971) |
| May 7 | 81.0°F (1974) | 19.0°F (1938) | 0.23 in (1957) |
| May 8 | 82.0°F (2018) | 19.0°F (1975) | 0.36 in (1998) |
| May 9 | 82.0°F (2018) | 19.0°F (1975) | 1.06 in (2011) |
| May 10 | 82.0°F (1934) | 17.1°F (1922) | 0.45 in (1947) |
| May 11 | 82.9°F (1984) | 17.1°F (1922) | 1.20 in (1958) |
| May 12 | 87.1°F (1996) | 19.0°F (2022) | 0.80 in (1968) |
| May 13 | 84.0°F (1984) | 23.0°F (1953) | 0.85 in (1965) |
| May 14 | 84.0°F (1996) | 25.0°F (1985) | 0.68 in (1977) |
| May 15 | 82.0°F (2022) | 21.0°F (1962) | 0.90 in (1951) |
| May 16 | 81.0°F (1927) | 19.9°F (1962) | 0.40 in (1975) |
| May 17 | 82.9°F (2009) | 21.9°F (1977) | 1.16 in (1993) |
| May 18 | 84.9°F (2009) | 18.0°F (2017) | 0.59 in (2011) |
| May 19 | 84.9°F (2008) | 21.9°F (1977) | 0.50 in (2019) |
| May 20 | 84.0°F (2008) | 18.0°F (1975) | 0.63 in (2019) |
| May 21 | 82.9°F (2012) | 23.0°F (1962) | 0.50 in (1919) |
| May 22 | 86.0°F (2000) | 19.9°F (1927) | 0.85 in (1951) |
| May 23 | 87.1°F (2000) | 21.9°F (2021) | 0.40 in (1951) |
| May 24 | 84.9°F (1984) | 21.9°F (1960) | 1.04 in (1977) |
| May 25 | 84.0°F (2001) | 19.9°F (1916) | 0.83 in (1995) |
| May 26 | 82.9°F (1951) | 21.9°F (1980) | 0.48 in (1931) |
| May 27 | 86.0°F (2003) | 25.0°F (1942) | 0.57 in (2019) |
| May 28 | 89.1°F (2003) | 19.9°F (1918) | 1.85 in (1934) |
| May 29 | 87.1°F (1984) | 21.9°F (2006) | 0.40 in (1919) |
| May 30 | 90.0°F (2002) | 25.0°F (1918) | 0.85 in (1961) |
| May 31 | 90.0°F (2002) | 26.1°F (1937) | 1.05 in (1991) |