April weather forecast and climate
Willow Creek, CA

Weather in April

April is a moderate spring month in Willow Creek, California, with temperature in the range of an average high of 56.1°F (13.4°C) and an average low of 43.5°F (6.4°C).

Temperature

In Willow Creek, California, the average high-temperature in April is almost the same as in March - a mild 56.1°F (13.4°C). In Willow Creek, California,, the average low-temperature is 43.5°F (6.4°C).

Humidity

In Willow Creek, the average relative humidity in April is 80%.

Rainfall

In Willow Creek, during 13.1 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. In Willow Creek, California, during the entire year, the rain falls for 114.9 days and collects up to 31.61" (803mm) of precipitation.

Snowfall

January, March through December are months without snowfall.

Daylight

In April, the average length of the day is 13.4h.

Sunshine

In April, the average sunshine in Willow Creek is 8.7h.

UV index

The average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 4 in April interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Willow Creek?

In April, the average relative humidity in Willow Creek is 80%.

How many days does it rain in April in Willow Creek?

In April, in Willow Creek, the rain falls for 13.1 days. Throughout April, 2.56" (65mm) of precipitation is accumulated.

When it does not snow in Willow Creek?

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

How many hours of daylight does Willow Creek have in April?

The average length of the day in April in Willow Creek is 13.4h.

How long on average sun shines in April in Willow Creek?

In Willow Creek, the average sunshine in April is 8.7h.

What is the UV index intensity in April in Willow Creek?

In Willow Creek, California, the average daily maximum UV index in April is 4. A UV Index of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV rays.

Average temperature in April
Willow Creek, CA

Average temperature in April - Willow Creek, CA
  • Average high temperature in April: 56.1°F

The warmest month (with the highest average high temperature) is August (68.9°F).
The month with the lowest average high temperature is December (52.7°F).

  • Average low temperature in April: 43.5°F

The month with the highest average low temperature is August (51.4°F).
The coldest month (with the lowest average low temperature) is February (41.7°F).

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Average pressure in April
Willow Creek, CA

Average pressure in April - Willow Creek, CA
  • Average pressure in April: 30.07"

The month with the highest atmospheric pressure is January (30.13").
The month with the lowest atmospheric pressure is August (29.97").

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Average wind speed in April
Willow Creek, CA

Average wind speed in April - Willow Creek, CA
  • Average wind speed in April: 7.8mph

The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in April
Willow Creek, CA

Average humidity in April - Willow Creek, CA
  • Average humidity in April: 80%

The month with the highest relative humidity is March (82%).
Months with the lowest relative humidity are September and October (76%).

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Average rainfall in April
Willow Creek, CA

Average rainfall in April - Willow Creek, CA
  • Average rainfall in April: 2.56"

The wettest month (with the highest rainfall) is December (5.87").
The driest month (with the least rainfall) is July (0.08").

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Average rainfall days in April
Willow Creek, CA

Average rainfall days in April - Willow Creek, CA
  • Average rainfall days in April: 13.1 days

The month with the highest number of rainy days is March (16.8 days).
Months with the least rainy days are July and August (2.2 days).

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Average snowfall in April
Willow Creek, CA

Average snowfall in April - Willow Creek, CA
  • Average snowfall in April: 0"

The month with the highest snowfall is February (0.39").
Months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in April
Willow Creek, CA

Average snowfall days in April - Willow Creek, CA
  • Average snowfall days in April: 0 days

The month with the highest number of snowfall days is February (0.3 days).
Months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).

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Average daylight in April /
Average sunshine in April
Willow Creek, CA

Average daylight in April / Average sunshine in April - Willow Creek, CA
  • Average daylight in April: 13.4h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in April: 8.7h

The month with the most sunshine is July (Average sunshine: 11.5h).
Months with the least sunshine are January and December (Average sunshine: 5.1).

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Average sunshine days in April
Willow Creek, CA

Average sunshine days in April - Willow Creek, CA
  • Average sunshine days in April: 15.5 days

Months with the most sunshine days are July and August (28 days).
The month with the least sunshine days is March (12.5 days).

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Average UV index in April
Willow Creek, CA

Average UV index in April - Willow Creek, CA
  • Average UV index in April: 4

Months with the highest UV index are June, July and August (UV index 5).
Months with the lowest UV index are January, February, March, November and December (UV index 3).

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Average cloud cover in April
Willow Creek, CA

Average cloud cover in April - Willow Creek, CA
  • Average cloud cover in April: 41

The month with the most cloud cover is March (Cloud cover 48).
Months with the least cloud cover are July and August (Cloud cover 18).

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Average visibility in April
Willow Creek, CA

Average visibility in April - Willow Creek, CA
  • Average visibility in April: 6mi

Months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
Months with the lowest visibility are July and August (5mi).

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