The highest day temperature in April 2026 was 96°F. The lowest night temperature was 29°F. The average values for day and night temperatures during April were 64.6°F и 48.0°F respectivly.

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

Precipitation total in April for Allentown is 1.4 in. It makes april one of the most rainy months of the year.

The average wind speed in April is 8.1 mph. It makes April one of the most windy months of the year for Allentown.

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 Allentown in April is 6.5 hours.