December weather in Delmar, MD
The average temperature in Delmar in December is 42.2°F (33.4°F–51.0°F). Average precipitation: 3.92 inches.
December is a winter month in Delmar, and is cooler than the annual average of 58.4°F. Daily temperatures swing about 17.6°F between overnight low and afternoon high. Daylight averages about 9h 20m. For travel, December is cool.
Avg High
51.0°F
Avg Low
33.4°F
Precipitation
3.92 in
Daylight
9h 20m
December records in Delmar
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 69.1°F (2014) | 24.1°F (2024) | 0.58 in (2015) |
| December 2 | 66.9°F (2018) | 24.1°F (2022) | 1.10 in (2025) |
| December 3 | 70.0°F (2012) | 25.0°F (2024) | 0.70 in (2023) |
| December 4 | 72.0°F (2012) | 23.0°F (2024) | 0.02 in (2013) |
| December 5 | 68.0°F (2017) | 25.0°F (2022) | 3.05 in (2020) |
| December 6 | 66.9°F (2013) | 26.1°F (2018) | 0.30 in (2016) |
| December 7 | 66.0°F (2021) | 23.0°F (2024) | 0.86 in (2016) |
| December 8 | 61.0°F (2022) | 24.1°F (2018) | 0.30 in (2013) |
| December 9 | 63.0°F (2023) | 19.9°F (2025) | 1.41 in (2013) |
| December 10 | 68.0°F (2019) | 24.1°F (2016) | 0.61 in (2023) |
| December 11 | 69.1°F (2021) | 18.0°F (2016) | 1.77 in (2024) |
| December 12 | 73.0°F (2015) | 23.0°F (2016) | 0.60 in (2021) |
| December 13 | 71.1°F (2015) | 19.9°F (2013) | 0.09 in (2019) |
| December 14 | 73.9°F (2015) | 23.0°F (2022) | 1.45 in (2020) |
| December 15 | 71.1°F (2015) | 12.0°F (2016) | 1.60 in (2022) |
| December 16 | 66.9°F (2021) | 16.0°F (2016) | 0.78 in (2022) |
| December 17 | 69.1°F (2021) | 27.0°F (2016) | 1.10 in (2015) |
| December 18 | 70.0°F (2016) | 28.0°F (2013) | 4.93 in (2023) |
| December 19 | 64.0°F (2021) | 21.9°F (2019) | 0.79 in (2025) |
| December 20 | 59.0°F (2013) | 19.0°F (2019) | 0.12 in (2020) |
| December 21 | 69.1°F (2013) | 19.0°F (2019) | 0.83 in (2012) |
| December 22 | 73.9°F (2013) | 19.0°F (2024) | 0.85 in (2015) |
| December 23 | 66.0°F (2013) | 16.0°F (2024) | 1.01 in (2022) |
| December 24 | 72.0°F (2015) | 12.9°F (2022) | 1.05 in (2015) |
| December 25 | 75.0°F (2015) | 10.9°F (2022) | 2.26 in (2020) |
| December 26 | 69.1°F (2015) | 14.0°F (2022) | 1.39 in (2012) |
| December 27 | 72.0°F (2015) | 21.9°F (2020) | 0.93 in (2012) |
| December 28 | 69.1°F (2015) | 16.0°F (2017) | 1.37 in (2018) |
| December 29 | 64.9°F (2014) | 12.0°F (2017) | 1.10 in (2013) |
| December 30 | 72.0°F (2019) | 19.9°F (2017) | 0.45 in (2021) |
| December 31 | 68.0°F (2014) | 19.9°F (2017) | 0.20 in (2018) |