May weather in Grantsville, UT
The average temperature in Grantsville in May is 57.8°F (44.7°F–70.9°F). Average precipitation: 1.53 inches.
May is a spring month in Grantsville, and is warmer than the annual average of 51.2°F. Daily temperatures swing about 26.2°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 14h 16m. For travel, May is a comfortable month to visit.
Avg High
70.9°F
Avg Low
44.7°F
Precipitation
1.53 in
Daylight
14h 16m
May records in Grantsville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 82.0°F (2021) | 30.0°F (2008) | 0.66 in (1988) |
| May 2 | 86.0°F (2007) | 28.0°F (2008) | 1.07 in (1979) |
| May 3 | 84.0°F (2015) | 28.9°F (2008) | 0.39 in (1981) |
| May 4 | 84.0°F (2004) | 30.9°F (2011) | 0.76 in (1993) |
| May 5 | 89.1°F (2004) | 30.9°F (2001) | 0.88 in (1926) |
| May 6 | 87.1°F (2004) | 26.1°F (2010) | 0.59 in (1933) |
| May 7 | 84.0°F (2018) | 27.0°F (2010) | 0.67 in (2015) |
| May 8 | 84.0°F (2021) | 24.1°F (2002) | 1.16 in (1986) |
| May 9 | 80.1°F (2025) | 34.0°F (2021) | 0.80 in (1908) |
| May 10 | 84.9°F (2001) | 28.9°F (2002) | 0.79 in (2015) |
| May 11 | 89.1°F (2007) | 30.9°F (2006) | 0.62 in (2010) |
| May 12 | 91.0°F (2007) | 33.1°F (2000) | 0.80 in (1906) |
| May 13 | 91.0°F (2007) | 32.0°F (2004) | 1.31 in (1907) |
| May 14 | 91.9°F (2013) | 32.0°F (2004) | 0.45 in (1991) |
| May 15 | 87.1°F (2016) | 37.0°F (2017) | 0.67 in (1991) |
| May 16 | 89.1°F (2012) | 37.0°F (2011) | 0.86 in (1977) |
| May 17 | 88.0°F (2006) | 32.0°F (2017) | 0.63 in (2005) |
| May 18 | 88.0°F (2007) | 32.0°F (2017) | 0.60 in (1916) |
| May 19 | 91.9°F (2008) | 33.1°F (2003) | 0.77 in (2011) |
| May 20 | 91.0°F (2007) | 34.0°F (2003) | 1.15 in (1975) |
| May 21 | 93.9°F (2008) | 35.1°F (2022) | 0.63 in (1981) |
| May 22 | 91.9°F (2012) | 33.1°F (2007) | 0.46 in (1993) |
| May 23 | 90.0°F (2000) | 34.0°F (2002) | 0.55 in (1917) |
| May 24 | 89.1°F (2003) | 35.1°F (2002) | 0.52 in (2010) |
| May 25 | 91.0°F (2001) | 21.0°F (2011) | 0.55 in (1915) |
| May 26 | 91.9°F (2001) | 39.0°F (2004) | 0.31 in (1941) |
| May 27 | 91.9°F (2022) | 37.9°F (2011) | 0.42 in (1996) |
| May 28 | 91.0°F (2007) | 39.0°F (2006) | 2.00 in (1906) |
| May 29 | 96.1°F (2003) | 34.0°F (2006) | 1.55 in (2011) |
| May 30 | 100.0°F (2003) | 35.1°F (2011) | 0.65 in (2011) |
| May 31 | 99.0°F (2003) | 39.0°F (2022) | 0.71 in (1925) |