December weather in Calais, ME
The average temperature in Calais in December is 26.9°F (19.4°F–34.4°F). Average precipitation: 6.27 inches. Average snowfall is 19.3 inches.
December is a winter month in Calais, and is cooler than the annual average of 44.2°F. Daily temperatures swing about 15°F between overnight low and afternoon high. Expect about 14 days with precipitation. Daylight averages about 8h 34m. For travel, December is a wet month.
Avg High
34.4°F
Avg Low
19.4°F
Precipitation
6.27 in
Snow
19.3 in
December records in Calais
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 61.0°F (2020) | 8.1°F (2012) | 2.41 in (2020) |
| December 2 | 52.0°F (2012) | 10.0°F (2007) | 1.70 in (2005) |
| December 3 | 57.0°F (2009) | 10.9°F (1995) | 1.38 in (2014) |
| December 4 | 50.0°F (1994) | 5.0°F (2002) | 0.63 in (2023) |
| December 5 | 55.0°F (2011) | 1.0°F (2025) | 1.79 in (2020) |
| December 6 | 57.9°F (1999) | 1.9°F (2006) | 1.50 in (2014) |
| December 7 | 59.0°F (1998) | 3.0°F (2007) | 2.45 in (1999) |
| December 8 | 52.0°F (2022) | -2.0°F (2000) | 2.36 in (1996) |
| December 9 | 54.0°F (2019) | -5.1°F (2025) | 1.60 in (2019) |
| December 10 | 55.0°F (2019) | 1.0°F (2000) | 3.51 in (2014) |
| December 11 | 59.0°F (2023) | 3.0°F (2007) | 2.62 in (2023) |
| December 12 | 57.9°F (2008) | 1.0°F (2013) | 1.84 in (2008) |
| December 13 | 57.9°F (2010) | 0.0°F (2013) | 6.66 in (2010) |
| December 14 | 55.0°F (2019) | -7.1°F (2013) | 2.47 in (2002) |
| December 15 | 54.0°F (2008) | -2.9°F (1997) | 3.29 in (2015) |
| December 16 | 53.1°F (2008) | -8.0°F (2016) | 1.27 in (2007) |
| December 17 | 55.9°F (2000) | -8.0°F (2013) | 1.12 in (2000) |
| December 18 | 57.0°F (2023) | 1.9°F (2009) | 1.89 in (2023) |
| December 19 | 55.0°F (2025) | 1.0°F (2007) | 1.70 in (2012) |
| December 20 | 53.1°F (2002) | -2.0°F (2008) | 1.44 in (2002) |
| December 21 | 55.0°F (2018) | -5.1°F (2008) | 2.04 in (2018) |
| December 22 | 55.9°F (2018) | 3.0°F (1997) | 1.25 in (2015) |
| December 23 | 54.0°F (2004) | -0.9°F (2008) | 1.76 in (2022) |
| December 24 | 55.0°F (2015) | 0.0°F (2011) | 0.94 in (2001) |
| December 25 | 59.0°F (2020) | -0.9°F (2011) | 0.91 in (1996) |
| December 26 | 55.0°F (2020) | 0.0°F (2013) | 1.72 in (2005) |
| December 27 | 48.0°F (2016) | -4.0°F (2017) | 1.27 in (2016) |
| December 28 | 50.0°F (2011) | -8.0°F (2017) | 0.93 in (2018) |
| December 29 | 51.1°F (2005) | -0.9°F (2017) | 1.69 in (2005) |
| December 30 | 51.1°F (2005) | -8.0°F (2017) | 1.05 in (1997) |
| December 31 | 50.0°F (2022) | -8.0°F (1998) | 0.84 in (2000) |