May weather in Rockland, ME
The average temperature in Rockland in May is 53.3°F (44.1°F–62.4°F). Average precipitation: 4.22 inches.
May is a spring month in Rockland, and is warmer than the annual average of 45.5°F. Daily temperatures swing about 18.3°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 14h 34m. For travel, May is a comfortable month to visit.
Avg High
62.4°F
Avg Low
44.1°F
Precipitation
4.22 in
Daylight
14h 34m
May records in Rockland
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 81.0°F (2004) | 28.0°F (1978) | 6.27 in (2023) |
| May 2 | 75.9°F (2010) | 32.0°F (1978) | 1.30 in (2020) |
| May 3 | 91.0°F (2001) | 27.0°F (1986) | 1.43 in (1989) |
| May 4 | 91.0°F (2001) | 21.0°F (1986) | 1.11 in (2004) |
| May 5 | 78.1°F (2010) | 30.9°F (1997) | 1.08 in (1984) |
| May 6 | 81.0°F (2001) | 32.0°F (1984) | 1.51 in (1989) |
| May 7 | 75.0°F (2023) | 28.9°F (1995) | 2.00 in (1991) |
| May 8 | 82.0°F (2015) | 32.0°F (1992) | 1.67 in (2005) |
| May 9 | 75.9°F (2000) | 25.0°F (1985) | 1.75 in (1994) |
| May 10 | 89.1°F (1979) | 30.0°F (1977) | 1.23 in (2006) |
| May 11 | 82.0°F (2015) | 32.0°F (1977) | 1.46 in (2025) |
| May 12 | 81.0°F (2001) | 34.0°F (1992) | 1.61 in (1989) |
| May 13 | 88.0°F (1991) | 30.0°F (2005) | 1.35 in (1981) |
| May 14 | 72.0°F (1991) | 34.0°F (2005) | 2.21 in (2002) |
| May 15 | 88.0°F (2022) | 37.0°F (1984) | 1.53 in (2017) |
| May 16 | 73.9°F (2025) | 30.0°F (2003) | 1.31 in (2011) |
| May 17 | 79.0°F (1991) | 34.0°F (1983) | 2.10 in (1978) |
| May 18 | 89.1°F (1977) | 28.0°F (1981) | 0.82 in (1991) |
| May 19 | 93.0°F (2017) | 35.1°F (1981) | 1.28 in (2007) |
| May 20 | 80.1°F (1986) | 34.0°F (2002) | 1.25 in (2010) |
| May 21 | 82.9°F (1989) | 37.0°F (2002) | 1.97 in (2023) |
| May 22 | 89.1°F (1992) | 37.0°F (2002) | 0.97 in (2013) |
| May 23 | 95.0°F (1992) | 36.0°F (1990) | 1.26 in (2025) |
| May 24 | 90.0°F (1977) | 37.9°F (1990) | 1.80 in (2005) |
| May 25 | 89.1°F (1991) | 37.0°F (2022) | 1.89 in (1999) |
| May 26 | 90.0°F (2007) | 35.1°F (1992) | 2.75 in (1979) |
| May 27 | 84.9°F (2010) | 36.0°F (1992) | 0.97 in (1989) |
| May 28 | 82.9°F (2020) | 37.9°F (1994) | 1.51 in (1983) |
| May 29 | 87.1°F (2023) | 39.9°F (1977) | 0.92 in (2001) |
| May 30 | 84.9°F (1981) | 37.0°F (2004) | 2.55 in (1984) |
| May 31 | 87.1°F (1998) | 35.1°F (1990) | 1.50 in (1983) |