The highest day temperature in April 2025 was 84°F. The lowest night temperature was 27°F. The average values for day and night temperatures during April were 64.3°F и 48.7°F respectivly.

The average sea surface temperature in April 2025 for New Castle was 53.7°F. The maximum and minimum values were 50.0°F and 60.4°F respectively.

You can expect various weather conditions during April. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in April for New Castle is 1.3 in. It makes april one of the most rainy months of the year.

The average wind speed in April is 8.8 mph. It makes April one of the most windy months of the year for New Castle.

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 New Castle in April is 6.6 hours.