May weather in Mackay, ID
The average temperature in Mackay in May is 50.8°F (37.0°F–64.6°F). Average precipitation: 1.23 inches.
May is a spring month in Mackay, and is warmer than the annual average of 42.2°F. Daily temperatures swing about 27.6°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 14h 33m. For travel, May is cool.
Avg High
64.6°F
Avg Low
37.0°F
Precipitation
1.23 in
Daylight
14h 33m
May records in Mackay
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 80.1°F (1981) | 12.9°F (1984) | 0.81 in (1959) |
| May 2 | 81.0°F (1947) | 14.0°F (1984) | 0.25 in (1933) |
| May 3 | 81.0°F (1918) | 16.0°F (1988) | 0.78 in (1999) |
| May 4 | 81.0°F (1918) | 19.9°F (1908) | 0.40 in (1971) |
| May 5 | 80.1°F (1918) | 19.0°F (1984) | 0.35 in (2024) |
| May 6 | 80.1°F (1934) | 19.0°F (1968) | 0.90 in (1995) |
| May 7 | 84.0°F (1987) | 17.1°F (1979) | 0.38 in (1951) |
| May 8 | 82.0°F (1987) | 19.0°F (2002) | 0.65 in (1977) |
| May 9 | 80.1°F (1954) | 14.0°F (2002) | 0.57 in (1966) |
| May 10 | 82.9°F (2025) | 21.9°F (2022) | 0.57 in (1986) |
| May 11 | 84.9°F (1924) | 17.1°F (1942) | 0.90 in (1957) |
| May 12 | 91.9°F (1924) | 19.9°F (1909) | 0.58 in (2018) |
| May 13 | 84.0°F (1936) | 21.0°F (1943) | 0.34 in (2017) |
| May 14 | 84.9°F (1924) | 23.0°F (1983) | 0.70 in (2025) |
| May 15 | 82.9°F (1924) | 26.1°F (1915) | 0.80 in (2015) |
| May 16 | 86.0°F (1927) | 19.9°F (1974) | 0.80 in (2015) |
| May 17 | 84.9°F (2006) | 23.0°F (1999) | 0.78 in (1987) |
| May 18 | 86.0°F (2009) | 23.0°F (1942) | 0.50 in (1913) |
| May 19 | 89.1°F (1954) | 23.0°F (2003) | 1.13 in (1957) |
| May 20 | 84.0°F (1919) | 21.9°F (2003) | 0.78 in (1972) |
| May 21 | 80.1°F (1919) | 21.9°F (1931) | 0.70 in (1923) |
| May 22 | 84.9°F (1934) | 21.9°F (1953) | 0.62 in (1946) |
| May 23 | 84.0°F (1934) | 21.0°F (1989) | 0.48 in (1980) |
| May 24 | 86.0°F (1934) | 23.0°F (1944) | 1.01 in (1980) |
| May 25 | 84.9°F (1919) | 24.1°F (1985) | 0.72 in (1977) |
| May 26 | 90.0°F (1986) | 21.9°F (1908) | 0.56 in (1987) |
| May 27 | 90.0°F (1919) | 24.1°F (1985) | 0.74 in (1985) |
| May 28 | 96.1°F (1919) | 24.1°F (1942) | 1.00 in (1964) |
| May 29 | 95.0°F (1919) | 28.0°F (1977) | 0.63 in (1908) |
| May 30 | 100.0°F (1939) | 27.0°F (1919) | 0.69 in (1935) |
| May 31 | 86.0°F (1972) | 27.0°F (1979) | 1.51 in (1927) |