May weather in Fort Benton, MT
The average temperature in Fort Benton in May is 54.4°F (40.6°F–68.3°F). Average precipitation: 2.08 inches. Average snowfall is 0.3 inches.
May is a spring month in Fort Benton, and is warmer than the annual average of 45.4°F. Daily temperatures swing about 27.7°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 14h 57m. For travel, May is a comfortable month to visit.
Avg High
68.3°F
Avg Low
40.6°F
Precipitation
2.08 in
Snow
0.3 in
May records in Fort Benton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 89.1°F (1897) | 14.0°F (2013) | 2.01 in (1951) |
| May 2 | 89.1°F (1947) | 16.0°F (1954) | 0.93 in (1964) |
| May 3 | 90.0°F (1897) | 16.0°F (1899) | 1.26 in (1964) |
| May 4 | 89.1°F (1897) | 19.9°F (1967) | 1.38 in (1964) |
| May 5 | 91.0°F (1992) | 23.0°F (1909) | 1.08 in (1940) |
| May 6 | 91.9°F (1992) | 25.0°F (1947) | 0.90 in (1975) |
| May 7 | 89.1°F (1911) | 28.9°F (1942) | 1.19 in (2020) |
| May 8 | 90.0°F (1987) | 24.1°F (1969) | 1.61 in (2024) |
| May 9 | 89.1°F (1987) | 24.1°F (2002) | 0.72 in (1975) |
| May 10 | 91.0°F (1906) | 14.0°F (1946) | 0.95 in (1983) |
| May 11 | 91.0°F (1958) | 19.9°F (1895) | 0.89 in (1970) |
| May 12 | 93.9°F (1960) | 21.0°F (1943) | 1.34 in (1995) |
| May 13 | 88.0°F (1969) | 24.1°F (2004) | 1.65 in (1974) |
| May 14 | 90.0°F (1903) | 28.0°F (2004) | 0.53 in (1965) |
| May 15 | 91.0°F (1897) | 27.0°F (1971) | 0.68 in (1984) |
| May 16 | 97.0°F (1988) | 26.1°F (1895) | 1.15 in (1898) |
| May 17 | 90.0°F (2006) | 27.0°F (1943) | 2.03 in (1949) |
| May 18 | 91.0°F (2006) | 27.0°F (1965) | 1.47 in (1959) |
| May 19 | 91.9°F (2006) | 26.1°F (1968) | 0.67 in (1959) |
| May 20 | 91.9°F (1958) | 28.0°F (1903) | 0.85 in (1898) |
| May 21 | 97.0°F (1980) | 27.0°F (2009) | 2.65 in (1962) |
| May 22 | 91.0°F (1980) | 24.1°F (2022) | 1.35 in (2002) |
| May 23 | 91.0°F (1985) | 30.9°F (2002) | 0.70 in (1996) |
| May 24 | 93.9°F (2001) | 32.0°F (1984) | 1.33 in (1953) |
| May 25 | 93.0°F (1999) | 28.0°F (2012) | 1.70 in (1980) |
| May 26 | 91.9°F (1966) | 27.0°F (1975) | 1.04 in (1942) |
| May 27 | 93.9°F (1966) | 32.0°F (1973) | 1.12 in (1955) |
| May 28 | 93.9°F (1958) | 21.0°F (1947) | 1.59 in (1982) |
| May 29 | 93.0°F (1984) | 27.0°F (1895) | 2.39 in (1982) |
| May 30 | 93.9°F (1984) | 30.0°F (1977) | 0.75 in (2011) |
| May 31 | 93.0°F (1972) | 27.0°F (1982) | 1.48 in (1975) |