The highest day temperature in April 2025 was 72°F. The lowest night temperature was 20°F. The average values for day and night temperatures during April were 51.5°F и 36.7°F respectivly.

The average sea surface temperature in April 2025 for Oshkosh was 44.2°F. The maximum and minimum values were 36.6°F and 54.2°F respectively.

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

Precipitation total in April for Oshkosh is 1.2 in. It makes april one of the most rainy months of the year.

The average wind speed in April is 12.1 mph. It makes April one of the most windy months of the year for Oshkosh.

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 Oshkosh in April is 5.3 hours.