The highest day temperature in December 2025 was 53°F. The lowest night temperature was 6°F. The average values for day and night temperatures during December were 27.7°F и 22.5°F respectivly.

The average sea surface temperature in December 2025 for Niagara Falls was 36.4°F. The maximum and minimum values were 31.0°F and 42.6°F respectively.

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

Precipitation total in December for Niagara Falls is 0.9 in.

The average wind speed in December is 11.0 mph. It makes December one of the most windy months of the year for Niagara Falls.

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 Niagara Falls in December is 2.9 hours.