May weather in Belfast, ME
The average temperature in Belfast in May is 52.1°F (41.3°F–62.9°F). Average precipitation: 3.86 inches.
May is a spring month in Belfast, and is warmer than the annual average of 44.1°F. Daily temperatures swing about 21.6°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 14h 36m. For travel, May is a comfortable month to visit.
Avg High
62.9°F
Avg Low
41.3°F
Precipitation
3.86 in
Daylight
14h 36m
May records in Belfast
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 78.1°F (2004) | 28.0°F (1995) | 1.28 in (1963) |
| May 2 | 87.1°F (2001) | 26.1°F (1903) | 1.59 in (2006) |
| May 3 | 89.1°F (2001) | 21.9°F (1966) | 2.60 in (1900) |
| May 4 | 89.1°F (2001) | 28.0°F (1986) | 1.60 in (1947) |
| May 5 | 84.0°F (2001) | 26.1°F (1995) | 0.98 in (1945) |
| May 6 | 81.0°F (1976) | 26.1°F (1992) | 2.74 in (1989) |
| May 7 | 79.0°F (1957) | 26.1°F (1992) | 1.22 in (1998) |
| May 8 | 87.1°F (1957) | 26.1°F (1950) | 1.45 in (1994) |
| May 9 | 88.0°F (1979) | 28.0°F (1997) | 0.80 in (1954) |
| May 10 | 91.0°F (1979) | 28.9°F (1902) | 1.53 in (1904) |
| May 11 | 84.0°F (1985) | 28.9°F (1956) | 1.91 in (1945) |
| May 12 | 84.0°F (1991) | 28.0°F (1992) | 2.01 in (1995) |
| May 13 | 81.0°F (1959) | 28.0°F (1992) | 1.45 in (1981) |
| May 14 | 82.0°F (1961) | 30.0°F (2005) | 2.00 in (1893) |
| May 15 | 84.0°F (2022) | 28.0°F (1947) | 1.88 in (2017) |
| May 16 | 89.1°F (1951) | 30.0°F (1947) | 1.53 in (2006) |
| May 17 | 91.0°F (1977) | 32.0°F (1957) | 3.54 in (1948) |
| May 18 | 89.1°F (1977) | 30.0°F (1981) | 3.28 in (1900) |
| May 19 | 91.9°F (2017) | 30.0°F (1951) | 1.98 in (1963) |
| May 20 | 84.0°F (1959) | 30.9°F (2002) | 1.42 in (1899) |
| May 21 | 84.0°F (1992) | 30.0°F (1948) | 1.70 in (1973) |
| May 22 | 95.0°F (1992) | 33.1°F (1956) | 0.85 in (1971) |
| May 23 | 91.0°F (1977) | 33.1°F (1967) | 1.38 in (1974) |
| May 24 | 90.0°F (1964) | 28.9°F (1903) | 1.00 in (1982) |
| May 25 | 91.0°F (2007) | 32.0°F (1903) | 1.90 in (1979) |
| May 26 | 89.1°F (2010) | 30.0°F (1992) | 2.43 in (2005) |
| May 27 | 86.0°F (1982) | 33.1°F (1969) | 2.61 in (1961) |
| May 28 | 91.9°F (1959) | 32.0°F (1977) | 1.86 in (1951) |
| May 29 | 90.0°F (1972) | 34.0°F (2014) | 1.16 in (1984) |
| May 30 | 88.0°F (1998) | 32.0°F (2017) | 2.00 in (1984) |
| May 31 | 89.1°F (1962) | 35.1°F (1903) | 1.20 in (1896) |