The highest day temperature in December 2025 was 42°F. The lowest night temperature was 10°F. The average values for day and night temperatures during December were 31.6°F и 25.6°F respectivly.

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

Precipitation total in December for Kupyansk is 0.6 in.

The average wind speed in December is 10.4 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 Kupyansk in December is 2.3 hours.