The highest day temperature in April 2025 was 91°F. The lowest night temperature was 43°F. The average values for day and night temperatures during April were 70.2°F и 53.3°F respectivly.

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

Precipitation total in April for Fontana is 0.5 in.

The average wind speed in April is 4.8 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 Fontana in April is 10.1 hours.