The highest day temperature in December 2023 was 56°F. The lowest night temperature was 34°F. The average values for day and night temperatures during December were 48.8°F и 45.1°F respectivly.

The average sea surface temperature in December 2023 for Grado was 54.8°F. The maximum and minimum values were 51.0°F and 59.8°F respectively.

Most of the days in December are gloomy but you can also expect sunny days.

Precipitation total in December for Grado is 1.9 in. It makes december one of the most rainy months of the year.

The average wind speed in December is 4.8 mph. This value is relatively stable throughout the year.

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 Grado in December is 3.4 hours.