April weather forecast
Rancho Cucamonga, CA

Weather in April

April, like March, is another pleasant spring month in Rancho Cucamonga, California, with an average temperature varying between 72.9°F (22.7°C) and 50.5°F (10.3°C).

Temperature

In April, the average high-temperature is relatively the same as in March - a still agreeable 72.9°F (22.7°C). In April, the average low-temperature is 50.5°F (10.3°C).

Humidity

The average relative humidity in April is 51%.

Rainfall

In Rancho Cucamonga, it is raining for 5.4 days, with typically 0.47" (12mm) of accumulated precipitation. In Rancho Cucamonga, during the entire year, the rain falls for 42.3 days and collects up to 4.53" (115mm) of precipitation.

Snowfall

January, March through December are months without snowfall in Rancho Cucamonga, California.

Daylight

In Rancho Cucamonga, the average length of the day in April is 13h and 4min.
On the first day of the month, sunrise is at 6:37 am and sunset at 7:11 pm. On the last day of April, sunrise is at 6:01 am and sunset at 7:33 pm PDT.

Sunshine

In April, the average sunshine in Rancho Cucamonga is 11.4h.

UV index

The average daily maximum UV index in April in Rancho Cucamonga, California, is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: In April, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the average humidity in April in Rancho Cucamonga?

In April, the average relative humidity in Rancho Cucamonga, California, is 51%.

How much does it rain in Rancho Cucamonga in April?

In Rancho Cucamonga, in April, during 5.4 rainfall days, 0.47" (12mm) of precipitation is typically accumulated.

When it does not snow in Rancho Cucamonga?

January, March through December are months without snowfall.

What is the average length of the day in April in Rancho Cucamonga?

The average day length in April is 13h and 4min.

When is the sunrise / sunset in April in Rancho Cucamonga?

In April, on the first day of the month, sunrise is at 6:37 am and sunset at 7:11 pm. On the last day of the month, in Rancho Cucamonga, sunrise is at 6:01 am and sunset at 7:33 pm PDT.

How long on average sun shines in April in Rancho Cucamonga?

In April, the average sunshine duration in Rancho Cucamonga, California, is 11.4h.

What is the UV index reading in April in Rancho Cucamonga?

In Rancho Cucamonga, California, the average daily maximum UV index in April is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Rancho Cucamonga, CA

Average temperature in April - Rancho Cucamonga, CA
  • Average high temperature in April: 72.9°F

The warmest month (with the highest average high temperature) is August (91.8°F).
The month with the lowest average high temperature is December (61.7°F).

  • Average low temperature in April: 50.5°F

The month with the highest average low temperature is August (66.6°F).
The coldest months (with the lowest average low temperature) are February and December (45.3°F).

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Average pressure in April
Rancho Cucamonga, CA

Average pressure in April - Rancho Cucamonga, CA
  • Average pressure in April: 29.95"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

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Average wind speed in April
Rancho Cucamonga, CA

Average wind speed in April - Rancho Cucamonga, CA
  • Average wind speed in April: 5.8mph

The windiest month (with the highest average wind speed) is May (5.9mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).

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Average humidity in April
Rancho Cucamonga, CA

Average humidity in April - Rancho Cucamonga, CA
  • Average humidity in April: 51%

The months with the highest relative humidity are February, March and May (53%).
The month with the lowest relative humidity is August (41%).

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Average rainfall in April
Rancho Cucamonga, CA

Average rainfall in April - Rancho Cucamonga, CA
  • Average rainfall in April: 0.47"

The wettest month (with the highest rainfall) is February (0.98").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in April
Rancho Cucamonga, CA

Average rainfall days in April - Rancho Cucamonga, CA
  • Average rainfall days in April: 5.4 days

The month with the highest number of rainy days is March (6.3 days).
The month with the least rainy days is June (0.9 days).

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Average snowfall days in April
Rancho Cucamonga, CA

Average snowfall days in April - Rancho Cucamonga, CA
  • Average snowfall days in April: 0 days

The month with the highest number of snowfall days is February (0.1 days).
The 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
Rancho Cucamonga, CA

Average daylight in April / Average sunshine in April - Rancho Cucamonga, CA
  • Average daylight in April: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 23min).
The month with the shortest days is December (Average daylight: 9h and 56min).

  • Average sunshine in April: 11h and 24min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 54min).

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Average sunshine days in April
Rancho Cucamonga, CA

Average sunshine days in April - Rancho Cucamonga, CA
  • Average sunshine days in April: 24 days

The month with the most sunshine days is June (28.3 days).
The month with the least sunshine days is February (22.8 days).

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Average UV index in April
Rancho Cucamonga, CA

Average UV index in April - Rancho Cucamonga, CA
  • Average UV index in April: 5

The 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
Rancho Cucamonga, CA

Average cloud cover in April - Rancho Cucamonga, CA
  • Average cloud cover in April: 16

The months with the most cloud cover are February and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in April
Rancho Cucamonga, CA

Average visibility in April - Rancho Cucamonga, CA
  • Average visibility in April: 6mi

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

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