April weather forecast and climate
Fontana, CA

Weather in April

April in Fontana, California, is a pleasant spring month, with average temperature varying between 49.6°F (9.8°C) and 72°F (22.2°C).

Temperature

In April, the average high-temperature is practically the same as in March - a pleasant 72°F (22.2°C). The average low-temperature, in Fontana, is 49.6°F (9.8°C).

Humidity

In April, the average relative humidity is 50%.

Rainfall

In Fontana, it is raining for 5.4 days, with typically 0.63" (16mm) of accumulated precipitation. Throughout the year, there are 48.1 rainfall days, and 6.89" (175mm) of precipitation is accumulated.

Snowfall

In Fontana snow does not fall in January, March through December.

Daylight

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

Sunshine

In April, the average sunshine in Fontana is 11.3h.

UV index

In April, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in April in Fontana?

In April, the average high-temperature is 72°F (22.2°C), and the average low-temperature is 49.6°F (9.8°C).

What is the average humidity in April in Fontana?

The average relative humidity in April is 50%.

How much does it rain in Fontana in April?

In Fontana, California, in April, it is raining for 5.4 days, with typically 0.63" (16mm) of accumulated precipitation.

When it does not snow in Fontana?

In Fontana, California, snow does not fall in January, March through December.

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

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

How long on average sun shines in April in Fontana?

In Fontana, California, the average sunshine in April is 11.3h.

What is the UV index reading in April in Fontana?

In Fontana, California, the average daily maximum UV index in April is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from the exposure to the Sun's UV rays.

Average temperature in April
Fontana, CA

Average temperature in April - Fontana, CA
  • Average high temperature in April: 72°F

The warmest month (with the highest average high temperature) is August (92.1°F).
The month with the lowest average high temperature is December (60.8°F).

  • Average low temperature in April: 49.6°F

The month with the highest average low temperature is August (67.3°F).
The coldest months (with the lowest average low temperature) are February and December (44.2°F).

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Average pressure in April
Fontana, CA

Average pressure in April - Fontana, CA
  • Average pressure in April: 29.94"

The month with the highest atmospheric pressure is January (30.1").
The month with the lowest atmospheric pressure is June (29.85").

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Average wind speed in April
Fontana, CA

Average wind speed in April - Fontana, CA
  • Average wind speed in April: 6mph

The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).

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Average humidity in April
Fontana, CA

Average humidity in April - Fontana, CA
  • Average humidity in April: 50%

Months with the highest relative humidity are February, March and May (52%).
The month with the lowest relative humidity is August (39%).

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Average rainfall in April
Fontana, CA

Average rainfall in April - Fontana, CA
  • Average rainfall in April: 0.63"

The wettest month (with the highest rainfall) is February (1.57").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in April
Fontana, CA

Average rainfall days in April - Fontana, CA
  • Average rainfall days in April: 5.4 days

The month with the highest number of rainy days is March (7.5 days).
The month with the least rainy days is June (1.2 days).

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Average snowfall days in April
Fontana, CA

Average snowfall days in April - Fontana, CA
  • Average snowfall days in April: 0 days

The month with the highest number of snowfall days is February (0.1 days).
Months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

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Average daylight in April /
Average sunshine in April
Fontana, CA

Average daylight in April / Average sunshine in April - Fontana, CA
  • Average daylight in April: 13.1h

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

  • Average sunshine in April: 11.3h

Months with the most sunshine are June, July and August (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6.9h).

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Average sunshine days in April
Fontana, CA

Average sunshine days in April - Fontana, CA
  • Average sunshine days in April: 24.3 days

The month with the most sunshine days is June (28.3 days).
The month with the least sunshine days is February (21.1 days).

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Average UV index in April
Fontana, CA

Average UV index in April - Fontana, CA
  • Average UV index in April: 5

Months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in April
Fontana, CA

Average cloud cover in April - Fontana, CA
  • Average cloud cover in April: 17

Months with the most cloud cover are February, March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 4).

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Average visibility in April
Fontana, CA

Average visibility in April - Fontana, CA
  • Average visibility in April: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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