May weather in Big Sandy, MT
The average temperature in Big Sandy in May is 54.6°F (41.2°F–67.9°F). Average precipitation: 2.07 inches.
May is a spring month in Big Sandy, and is warmer than the annual average of 45.1°F. Daily temperatures swing about 26.7°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 14h 59m. For travel, May is a comfortable month to visit.
Avg High
67.9°F
Avg Low
41.2°F
Precipitation
2.07 in
Daylight
14h 59m
May records in Big Sandy
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 89.1°F (1987) | 16.0°F (2013) | 0.56 in (1922) |
| May 2 | 87.1°F (1957) | 9.0°F (1954) | 0.83 in (1964) |
| May 3 | 91.0°F (1998) | 19.9°F (1954) | 0.67 in (1955) |
| May 4 | 88.0°F (1936) | 21.0°F (1967) | 1.63 in (1964) |
| May 5 | 88.0°F (1966) | 19.0°F (1929) | 1.62 in (2003) |
| May 6 | 89.1°F (1992) | 5.0°F (1996) | 1.06 in (1975) |
| May 7 | 91.9°F (1992) | 21.9°F (1929) | 1.09 in (1981) |
| May 8 | 90.0°F (1987) | 21.0°F (1995) | 0.98 in (2024) |
| May 9 | 89.1°F (1987) | 18.0°F (1996) | 2.09 in (1982) |
| May 10 | 88.0°F (1987) | 14.0°F (1946) | 1.05 in (1983) |
| May 11 | 90.0°F (1941) | 24.1°F (1953) | 0.89 in (1986) |
| May 12 | 90.0°F (1960) | 17.1°F (1992) | 0.38 in (1958) |
| May 13 | 91.0°F (1931) | 19.9°F (1995) | 4.92 in (1974) |
| May 14 | 98.1°F (1936) | 26.1°F (2004) | 0.52 in (1955) |
| May 15 | 91.9°F (1944) | 26.1°F (1929) | 1.45 in (1977) |
| May 16 | 96.1°F (1988) | 24.1°F (2002) | 0.97 in (1955) |
| May 17 | 89.1°F (2006) | 21.0°F (2025) | 0.90 in (1949) |
| May 18 | 91.0°F (2006) | 24.1°F (1965) | 0.62 in (2012) |
| May 19 | 90.0°F (1964) | 25.0°F (1963) | 1.11 in (1982) |
| May 20 | 91.9°F (1992) | 28.9°F (1979) | 1.85 in (1927) |
| May 21 | 95.0°F (1980) | 21.9°F (2009) | 1.52 in (1974) |
| May 22 | 95.0°F (1928) | 23.0°F (2025) | 1.59 in (1986) |
| May 23 | 93.9°F (1980) | 28.9°F (1949) | 0.85 in (1927) |
| May 24 | 91.9°F (1941) | 23.0°F (1996) | 1.34 in (1997) |
| May 25 | 96.1°F (1928) | 27.0°F (1950) | 1.53 in (1953) |
| May 26 | 98.1°F (1936) | 27.0°F (1930) | 1.25 in (1972) |
| May 27 | 100.0°F (1936) | 30.0°F (1954) | 0.76 in (1955) |
| May 28 | 95.0°F (1934) | 32.0°F (1935) | 1.43 in (1931) |
| May 29 | 100.0°F (1936) | 24.1°F (1951) | 1.82 in (1982) |
| May 30 | 95.0°F (1936) | 28.9°F (1924) | 1.14 in (1953) |
| May 31 | 93.9°F (1936) | 27.0°F (1996) | 5.91 in (1961) |