May weather in Saco, MT
The average temperature in Saco in May is 53.7°F (39.9°F–67.5°F). Average precipitation: 1.77 inches.
May is a spring month in Saco, and is warmer than the annual average of 42°F. Daily temperatures swing about 27.6°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 15h 1m. For travel, May is a comfortable month to visit.
Avg High
67.5°F
Avg Low
39.9°F
Precipitation
1.77 in
Daylight
15h 1m
May records in Saco
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 84.0°F (1980) | 14.0°F (1984) | 0.39 in (1972) |
| May 2 | 88.0°F (1985) | 16.0°F (1976) | 0.44 in (1987) |
| May 3 | 88.0°F (1985) | 19.0°F (1967) | 0.45 in (1991) |
| May 4 | 87.1°F (2025) | 17.1°F (2002) | 1.19 in (1986) |
| May 5 | 90.0°F (1992) | 17.1°F (2002) | 0.52 in (2012) |
| May 6 | 93.0°F (1992) | 21.9°F (1972) | 0.98 in (1979) |
| May 7 | 91.9°F (1992) | 24.1°F (1976) | 1.20 in (2024) |
| May 8 | 91.9°F (1992) | 19.9°F (1984) | 1.04 in (1986) |
| May 9 | 88.0°F (1977) | 21.0°F (1968) | 0.67 in (1983) |
| May 10 | 90.0°F (2025) | 21.9°F (2022) | 1.45 in (2016) |
| May 11 | 91.9°F (2025) | 23.0°F (2022) | 0.85 in (2004) |
| May 12 | 90.0°F (1987) | 25.0°F (1967) | 0.44 in (1989) |
| May 13 | 91.0°F (1971) | 24.1°F (2004) | 1.39 in (1974) |
| May 14 | 88.0°F (2013) | 26.1°F (2014) | 0.43 in (1977) |
| May 15 | 91.0°F (1984) | 23.0°F (2005) | 0.20 in (1989) |
| May 16 | 89.1°F (1988) | 23.0°F (1968) | 1.13 in (1981) |
| May 17 | 89.1°F (1972) | 26.1°F (2002) | 0.91 in (2015) |
| May 18 | 93.0°F (1992) | 26.1°F (2015) | 0.60 in (2019) |
| May 19 | 90.0°F (1992) | 26.1°F (1968) | 1.00 in (2004) |
| May 20 | 88.0°F (1985) | 23.0°F (1968) | 0.97 in (1974) |
| May 21 | 93.9°F (1980) | 25.0°F (1969) | 0.98 in (1974) |
| May 22 | 97.0°F (1980) | 27.0°F (2022) | 1.49 in (2007) |
| May 23 | 95.0°F (1980) | 27.0°F (2002) | 0.81 in (2004) |
| May 24 | 91.0°F (1988) | 28.0°F (2002) | 0.37 in (2009) |
| May 25 | 88.0°F (1969) | 27.0°F (1992) | 1.03 in (1980) |
| May 26 | 91.9°F (1969) | 30.0°F (1989) | 0.86 in (1987) |
| May 27 | 89.1°F (1969) | 28.9°F (1975) | 0.67 in (1981) |
| May 28 | 87.1°F (1971) | 32.0°F (1975) | 2.30 in (1982) |
| May 29 | 100.0°F (1988) | 30.0°F (1971) | 1.22 in (1999) |
| May 30 | 95.0°F (1984) | 33.1°F (1982) | 0.75 in (1985) |
| May 31 | 90.0°F (1972) | 14.0°F (2007) | 1.64 in (2000) |