The highest day temperature in December 2025 was 54°F. The lowest night temperature was 13°F. The average values for day and night temperatures during December were 40.0°F и 29.4°F respectivly.

The average sea surface temperature in December 2025 for Baltimore was 41.2°F. The maximum and minimum values were 36.8°F and 48.8°F respectively.

You can expect various weather conditions during December. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in December for Baltimore is 1.1 in.

The average wind speed in December is 8.1 mph.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Baltimore in December is 5.3 hours.