April weather forecast
Campbell, CA

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The long roads in the crowded city of Campbell, California
The long roads in the crowded city of Campbell, California

Weather in April

April, the same as March, is another enjoyable spring month in Campbell, California, with an average temperature ranging between max 66°F (18.9°C) and min 45.5°F (7.5°C).

Temperature

As Campbell, California, steps into April, the average high-temperature is measured at a still comfortable 66°F (18.9°C), displaying minor differences from March's 62.2°F (16.8°C). Campbell observes an average nighttime low-temperature of 45.5°F (7.5°C) during the month of April.

Humidity

In Campbell, the average relative humidity in April is 70%.

Rainfall

In Campbell, during April, the rain falls for 7.2 days and regularly aggregates up to 0.75" (19mm) of precipitation. In Campbell, during the entire year, the rain falls for 68.6 days and collects up to 11.57" (294mm) of precipitation.

Daylight

In April, the average length of the day is 13h and 11min.
On the first day of April in Campbell, sunrise is at 6:51 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 7:56 pm PDT.

Sunshine

In April, the average sunshine is 10.4h.

UV index

The average daily maximum UV index in April is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 5 during April translates into the following directions:
Make use of precautions - It is urged to ward off sun damage. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.

Frequently asked questions

What is the usual temperature for Campbell in April?

April temperatures in Campbell, California, vary between a high-temperature of 66°F (18.9°C) and a low-temperature of 45.5°F (7.5°C).

What is the average humidity in April in Campbell?

The average relative humidity in April is 70%.

How much does it rain in Campbell in April?

In April, in Campbell, the rain falls for 7.2 days. Throughout April, 0.75" (19mm) of precipitation is accumulated.

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

The average day length in April in Campbell, California, is 13h and 11min.

When is the sunrise / sunset in April in Campbell?

In April, on the first day of the month, sunrise is at 6:51 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 7:56 pm PDT.

How long on average sun shines in April in Campbell?

The average sunshine duration in April in Campbell is 10.4h.

How high is the UV index in April in Campbell?

In April, the average daily maximum UV index in Campbell is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Campbell, CA

Average temperature in April - Campbell, CA
  • Average high temperature in April: 66°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is December (56.7°F).

  • Average low temperature in April: 45.5°F

The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is February (43.5°F).

Average pressure in April
Campbell, CA

Average pressure in April - Campbell, CA
  • Average pressure in April: 30.04"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June and September (29.92"Hg).

Average wind speed in April
Campbell, CA

Average wind speed in April - Campbell, CA
  • Average wind speed in April: 5.9mph

The windiest month (with the highest average wind speed) is April (5.9mph).
The calmest months (with the lowest average wind speed) are August, September, October and November (4.5mph).

Average humidity in April
Campbell, CA

Average humidity in April - Campbell, CA
  • Average humidity in April: 70%

The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are July and September (62%).

Average rainfall in April
Campbell, CA

Average rainfall in April - Campbell, CA
  • Average rainfall in April: 0.75"

The wettest month (with the highest rainfall) is February (2.2").
The driest months (with the least rainfall) are July and August (0.04").

Average rainfall days in April
Campbell, CA

Average rainfall days in April - Campbell, CA
  • Average rainfall days in April: 7.2 days

The month with the highest number of rainy days is March (12.5 days).
The month with the least rainy days is August (0.9 days).

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

Average daylight in April / Average sunshine in April - Campbell, CA
  • Average daylight in April: 13h and 1min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in April: 10h and 2min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).

Average sunshine days in April
Campbell, CA

Average sunshine days in April - Campbell, CA
  • Average sunshine days in April: 21.5 days

The month with the most sunshine days is August (29.2 days).
The month with the least sunshine days is March (17.3 days).

Average UV index in April
Campbell, CA

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

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).

Average cloud cover in April
Campbell, CA

Average cloud cover in April - Campbell, CA
  • Average cloud cover in April: 26

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 6).

Average visibility in April
Campbell, CA

Average visibility in April - Campbell, 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).

Campbell, California, USA

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