May weather in Ennis, MT
The average temperature in Ennis in May is 49.4°F (34.7°F–64.1°F). Average precipitation: 1.93 inches. Average snowfall is 1.3 inches.
May is a spring month in Ennis, and is warmer than the annual average of 42.7°F. Daily temperatures swing about 29.4°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 14h 41m. For travel, May is cool.
Avg High
64.1°F
Avg Low
34.7°F
Precipitation
1.93 in
Snow
1.3 in
May records in Ennis
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 82.9°F (2021) | 15.1°F (1954) | 0.47 in (1938) |
| May 2 | 82.0°F (1947) | 12.9°F (2013) | 0.85 in (1959) |
| May 3 | 84.9°F (1947) | 18.0°F (2019) | 0.83 in (2022) |
| May 4 | 87.1°F (1966) | 18.0°F (1944) | 0.68 in (1993) |
| May 5 | 87.1°F (1966) | 17.1°F (2006) | 0.48 in (1926) |
| May 6 | 84.9°F (1992) | 19.9°F (1924) | 1.32 in (1995) |
| May 7 | 84.9°F (1987) | 18.0°F (2012) | 1.30 in (1975) |
| May 8 | 84.0°F (1987) | 19.0°F (2014) | 1.60 in (2021) |
| May 9 | 82.0°F (1928) | 12.0°F (2002) | 0.76 in (1948) |
| May 10 | 82.0°F (1940) | 21.0°F (1931) | 0.89 in (2016) |
| May 11 | 86.0°F (1960) | 19.0°F (2016) | 0.86 in (1981) |
| May 12 | 88.0°F (2001) | 21.0°F (1933) | 0.40 in (1925) |
| May 13 | 84.0°F (1936) | 17.1°F (1943) | 0.75 in (1925) |
| May 14 | 84.9°F (1936) | 19.9°F (1983) | 0.55 in (1968) |
| May 15 | 87.1°F (1987) | 19.9°F (1929) | 0.66 in (1961) |
| May 16 | 88.0°F (1927) | 21.0°F (1974) | 1.05 in (1980) |
| May 17 | 87.1°F (2006) | 21.0°F (1943) | 0.55 in (1996) |
| May 18 | 87.1°F (2006) | 21.0°F (1965) | 1.75 in (1944) |
| May 19 | 91.9°F (1954) | 19.9°F (2003) | 1.25 in (1941) |
| May 20 | 88.0°F (1958) | 25.0°F (1933) | 0.33 in (2016) |
| May 21 | 84.9°F (1919) | 19.9°F (1918) | 1.05 in (1952) |
| May 22 | 86.0°F (1919) | 27.0°F (1918) | 1.36 in (1981) |
| May 23 | 84.0°F (1956) | 21.9°F (1930) | 0.73 in (1970) |
| May 24 | 86.0°F (1922) | 27.0°F (1943) | 0.54 in (2023) |
| May 25 | 87.1°F (1922) | 23.0°F (1950) | 1.39 in (1980) |
| May 26 | 89.1°F (1928) | 25.0°F (1920) | 0.93 in (2015) |
| May 27 | 89.1°F (1919) | 27.0°F (1932) | 1.00 in (1987) |
| May 28 | 93.9°F (1919) | 26.1°F (1933) | 0.81 in (1982) |
| May 29 | 91.9°F (2003) | 23.0°F (1947) | 1.26 in (2007) |
| May 30 | 90.0°F (1936) | 24.1°F (1977) | 0.98 in (2022) |
| May 31 | 90.0°F (2020) | 25.0°F (1982) | 0.65 in (1955) |