The highest day temperature in April 2025 was 73°F. The lowest night temperature was 22°F. The average values for day and night temperatures during April were 46.8°F и 37.5°F respectivly.

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

Precipitation total in April for Kostroma is 2.1 in.

The average wind speed in April is 9.2 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 Kostroma in April is 5.4 hours.