January weather in South Portland, ME
The average temperature in South Portland in January is 24.0°F (15.6°F–32.4°F). Average precipitation: 3.50 inches. Average snowfall is 18.6 inches.
January is a winter month in South Portland, and is cooler than the annual average of 47.5°F. Daily temperatures swing about 16.8°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 9h 6m. For travel, January is cold.
Avg High
32.4°F
Avg Low
15.6°F
Precipitation
3.50 in
Snow
18.6 in
January records in South Portland
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 55.9°F (1966) | -16.8°F (2018) | 1.13 in (1945) |
| January 2 | 50.0°F (1979) | -17.0°F (1968) | 1.49 in (1987) |
| January 3 | 59.0°F (2000) | -16.1°F (1957) | 1.28 in (1999) |
| January 4 | 64.0°F (1950) | -18.0°F (1981) | 1.66 in (1982) |
| January 5 | 60.1°F (1993) | -13.0°F (1981) | 1.06 in (1952) |
| January 6 | 66.9°F (2007) | -11.9°F (1996) | 1.35 in (2014) |
| January 7 | 51.1°F (1946) | -11.7°F (2018) | 1.45 in (1969) |
| January 8 | 61.0°F (2008) | -16.1°F (1942) | 1.22 in (1998) |
| January 9 | 54.0°F (1978) | -18.9°F (1968) | 1.05 in (1956) |
| January 10 | 52.0°F (2016) | -18.9°F (1947) | 3.56 in (1977) |
| January 11 | 63.0°F (2020) | -20.0°F (1968) | 1.26 in (1983) |
| January 12 | 52.0°F (2020) | -18.0°F (1968) | 1.11 in (2012) |
| January 13 | 52.0°F (2017) | -15.0°F (1971) | 2.43 in (2024) |
| January 14 | 59.0°F (2013) | -16.1°F (1954) | 1.49 in (1978) |
| January 15 | 51.1°F (1995) | -18.0°F (1957) | 1.80 in (1999) |
| January 16 | 54.0°F (1995) | -18.0°F (1946) | 1.41 in (2021) |
| January 17 | 51.1°F (1995) | -22.0°F (1971) | 1.04 in (2022) |
| January 18 | 57.9°F (1990) | -22.0°F (1971) | 0.98 in (1994) |
| January 19 | 52.0°F (1972) | -26.0°F (1971) | 1.40 in (1986) |
| January 20 | 55.0°F (2006) | -20.9°F (1971) | 1.28 in (1995) |
| January 21 | 57.0°F (2006) | -11.9°F (1984) | 2.78 in (1979) |
| January 22 | 51.1°F (1957) | -18.9°F (1984) | 1.80 in (1958) |
| January 23 | 53.1°F (1957) | -15.0°F (1976) | 1.95 in (1992) |
| January 24 | 52.0°F (1999) | -20.9°F (1948) | 1.55 in (2019) |
| January 25 | 51.1°F (1947) | -14.1°F (1945) | 1.37 in (2020) |
| January 26 | 64.0°F (1950) | -18.0°F (1945) | 1.95 in (2023) |
| January 27 | 57.0°F (1974) | -18.0°F (1994) | 2.37 in (2015) |
| January 28 | 52.0°F (2006) | -11.9°F (2003) | 1.35 in (1994) |
| January 29 | 48.9°F (1989) | -7.1°F (1963) | 0.86 in (2022) |
| January 30 | 52.0°F (2013) | -14.1°F (1948) | 2.04 in (1966) |
| January 31 | 54.0°F (1988) | -17.0°F (1948) | 0.96 in (1942) |