May weather in Missoula, MT
The average temperature in Missoula in May is 53.6°F (40.8°F–66.5°F). Average precipitation: 2.26 inches. Average snowfall is 0.3 inches.
May is a spring month in Missoula, and is warmer than the annual average of 46.2°F. Daily temperatures swing about 25.7°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 14h 50m. For travel, May is a comfortable month to visit.
Avg High
66.5°F
Avg Low
40.8°F
Precipitation
2.26 in
Snow
0.3 in
May records in Missoula
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 81.0°F (1985) | 21.0°F (1972) | 0.27 in (1984) |
| May 2 | 82.9°F (1998) | 26.1°F (1973) | 0.38 in (1967) |
| May 3 | 78.1°F (1998) | 27.0°F (1996) | 1.02 in (2007) |
| May 4 | 81.0°F (1970) | 25.0°F (1996) | 1.02 in (1993) |
| May 5 | 82.9°F (1992) | 23.0°F (2010) | 0.62 in (1983) |
| May 6 | 82.9°F (1987) | 25.0°F (2010) | 0.63 in (1980) |
| May 7 | 87.1°F (1987) | 26.1°F (1984) | 0.37 in (1970) |
| May 8 | 82.0°F (1987) | 23.0°F (1999) | 0.35 in (1991) |
| May 9 | 82.9°F (1994) | 25.0°F (2002) | 0.66 in (1983) |
| May 10 | 82.0°F (1993) | 27.0°F (2006) | 0.46 in (1977) |
| May 11 | 89.1°F (1993) | 25.0°F (2012) | 1.14 in (1970) |
| May 12 | 89.1°F (1993) | 21.0°F (1985) | 0.55 in (1995) |
| May 13 | 87.1°F (1993) | 27.0°F (2008) | 0.26 in (1996) |
| May 14 | 84.0°F (1973) | 28.9°F (1986) | 0.44 in (1990) |
| May 15 | 88.0°F (2006) | 28.0°F (1974) | 1.06 in (1990) |
| May 16 | 90.0°F (2006) | 27.0°F (1986) | 0.75 in (1980) |
| May 17 | 89.1°F (2006) | 28.9°F (1984) | 1.13 in (1991) |
| May 18 | 89.1°F (2006) | 28.0°F (2003) | 0.57 in (1989) |
| May 19 | 89.1°F (2002) | 28.0°F (1974) | 0.58 in (1994) |
| May 20 | 81.0°F (1980) | 28.0°F (1989) | 0.63 in (2008) |
| May 21 | 87.1°F (1980) | 28.0°F (1971) | 1.56 in (1981) |
| May 22 | 87.1°F (1988) | 30.0°F (1984) | 0.65 in (2013) |
| May 23 | 89.1°F (2001) | 27.0°F (1986) | 1.49 in (1980) |
| May 24 | 91.9°F (2001) | 32.0°F (1967) | 0.69 in (1990) |
| May 25 | 88.0°F (2001) | 28.0°F (1967) | 1.98 in (1980) |
| May 26 | 91.9°F (1986) | 27.0°F (1973) | 1.18 in (1998) |
| May 27 | 91.9°F (1986) | 28.0°F (1973) | 0.57 in (2006) |
| May 28 | 91.0°F (2003) | 30.9°F (1974) | 0.62 in (1990) |
| May 29 | 91.0°F (1986) | 28.9°F (1979) | 0.72 in (1992) |
| May 30 | 93.0°F (1986) | 30.0°F (1979) | 1.27 in (1988) |
| May 31 | 91.9°F (1986) | 30.9°F (1974) | 0.52 in (1967) |