The highest day temperature in April 2026 was 80°F. The lowest night temperature was 21°F. The average values for day and night temperatures during April were 53.1°F и 40.7°F respectivly.

The average sea surface temperature in April 2026 for Appleton was 43.8°F. The maximum and minimum values were 36.6°F and 55.2°F respectively.

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

Precipitation total in April for Appleton is 1.4 in. It makes april the most rainy month of the year.

The average wind speed in April is 10.6 mph. It makes April the most windy month of the year for Appleton.

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 Appleton in April is 5.6 hours.