May weather in Hallowell, ME
The average temperature in Hallowell in May is 55.3°F (44.7°F–65.8°F). Average precipitation: 3.27 inches.
May is a spring month in Hallowell, and is warmer than the annual average of 46.1°F. Daily temperatures swing about 21.1°F between overnight low and afternoon high. Expect about 13 days with precipitation. Daylight averages about 14h 35m. For travel, May is a comfortable month to visit.
Avg High
65.8°F
Avg Low
44.7°F
Precipitation
3.27 in
Daylight
14h 35m
May records in Hallowell
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 79.0°F (1998) | 30.0°F (1995) | 1.69 in (2023) |
| May 2 | 90.0°F (2001) | 28.9°F (1974) | 1.86 in (1989) |
| May 3 | 91.0°F (2001) | 28.0°F (1966) | 2.06 in (1971) |
| May 4 | 87.1°F (1955) | 28.9°F (1986) | 1.11 in (1984) |
| May 5 | 84.0°F (1960) | 30.0°F (1974) | 0.69 in (1990) |
| May 6 | 82.9°F (1960) | 30.0°F (1992) | 2.20 in (1989) |
| May 7 | 82.9°F (2015) | 30.9°F (1950) | 0.91 in (2005) |
| May 8 | 84.9°F (1957) | 26.1°F (1950) | 1.02 in (1994) |
| May 9 | 86.0°F (1957) | 30.9°F (1997) | 1.05 in (1978) |
| May 10 | 86.0°F (2007) | 30.9°F (1963) | 1.55 in (2025) |
| May 11 | 84.9°F (1971) | 30.9°F (1956) | 1.69 in (1996) |
| May 12 | 87.1°F (1959) | 32.0°F (1963) | 2.15 in (1989) |
| May 13 | 81.0°F (2022) | 33.1°F (2005) | 1.83 in (1960) |
| May 14 | 91.9°F (2022) | 34.0°F (1950) | 1.07 in (2017) |
| May 15 | 84.9°F (2004) | 35.1°F (1996) | 0.77 in (1957) |
| May 16 | 89.1°F (1951) | 35.1°F (1987) | 1.51 in (1978) |
| May 17 | 89.1°F (1969) | 35.1°F (1955) | 2.60 in (1970) |
| May 18 | 93.0°F (2017) | 33.1°F (1961) | 0.95 in (1963) |
| May 19 | 91.0°F (1962) | 34.0°F (1951) | 1.36 in (1976) |
| May 20 | 87.1°F (1989) | 36.0°F (1987) | 1.61 in (2023) |
| May 21 | 91.0°F (1992) | 35.1°F (1964) | 1.68 in (2011) |
| May 22 | 93.9°F (1992) | 35.1°F (1956) | 0.68 in (1986) |
| May 23 | 91.0°F (1992) | 36.0°F (1956) | 1.72 in (2005) |
| May 24 | 90.0°F (1964) | 30.9°F (1956) | 1.23 in (1960) |
| May 25 | 91.0°F (2007) | 32.0°F (1956) | 0.96 in (1979) |
| May 26 | 91.9°F (2021) | 32.0°F (1956) | 1.06 in (2017) |
| May 27 | 88.0°F (1959) | 32.0°F (1969) | 1.45 in (1956) |
| May 28 | 91.9°F (2023) | 39.0°F (1956) | 1.00 in (1951) |
| May 29 | 89.1°F (1998) | 36.0°F (1968) | 2.66 in (1984) |
| May 30 | 84.9°F (1978) | 35.1°F (1961) | 1.45 in (1983) |
| May 31 | 91.0°F (1987) | 34.0°F (1961) | 3.01 in (1984) |