Ontario
California, USA
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Ontario, CA

A clear street near the luxurious residential estate in Ontario, California, with a scenic background of a hilly landscape, the clear blue sky
A clear street near the luxurious residential estate in Ontario, California, with a scenic background of a hilly landscape, the clear blue sky
April in Ontario, California, is a moderately hot spring month, with average temperature fluctuating between 50.5°F (10.3°C) and 73.9°F (23.3°C).

Temperature

In Ontario, California, the average high-temperature is essentially the same as in March - a warm 73.9°F (23.3°C). In April, the average low-temperature is 50.5°F (10.3°C).

Rainfall

Throughout April, in Ontario, 0.9" (23.9mm) of precipitation is accumulated. Throughout the year, in Ontario, 15" (382mm) of rain is accumulated.

Daylight

In April, the average length of the day is 13.1h.

What is the temperature in April in Ontario?

The average high-temperature, in April, in Ontario, is 73.9°F (23.3°C), while the average low-temperature is 50.5°F (10.3°C).

How much does it rain in Ontario in April?

Throughout April, in Ontario, 0.9" (23.9mm) of precipitation is accumulated.

What is the average length of the day in April in Ontario?

In April, the average length of the day is 13.1h.
Average temperature in April - Ontario, CA
  • Average high temperature in April: 74°F

The warmest month (with the highest average high temperature) is August (93.6°F).
The month with the lowest average high temperature is January (65.2°F).

  • Average low temperature in April: 50.5°F

The month with the highest average low temperature is August (64.7°F).
The coldest month (with the lowest average low temperature) is December (42.7°F).

Average rainfall in April - Ontario, CA
  • Average rainfall in April: 0.9"

The wettest month (with the highest rainfall) is February (3.4").
Driest months (with the lowest rainfall) are June, July and August (0.1").

Average daylight in April - Ontario, CA
  • Average daylight in April: 13.1h

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 9.9h).