April weather forecast
Hillsboro, OR

The red tree colors of the fall along a road and amid trees in this tranquil neighborhood in Hillsboro, Oregon
The red tree colors of the fall along a road and amid trees in this tranquil neighborhood in Hillsboro, Oregon

Weather in April

April is a moderate spring month in Hillsboro, Oregon, with an average temperature varying between 58.3°F (14.6°C) and 39.4°F (4.1°C).

Temperature

In April, the average high-temperature slightly increases from a cool 52.2°F (11.2°C) in March to a moderate 58.3°F (14.6°C). In Hillsboro, the average low-temperature is 39.4°F (4.1°C).

Humidity

In April, the average relative humidity is 78%.

Rainfall

In April, the rain falls for 18.6 days. Throughout April, 2.64" (67mm) of precipitation is accumulated. Throughout the year, there are 173 rainfall days, and 29.49" (749mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Hillsboro.

Daylight

The average length of the day in April is 13h and 34min.
On the first day of April in Hillsboro, sunrise is at 6:51 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 8:17 pm PDT.

Sunshine

In Hillsboro, the average sunshine in April is 7h.

UV index

In April, the average daily maximum UV index in Hillsboro is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily maximum UV index of 3 in April interpret into the following advice:
Take precautions - Protection against sunburn is recommended. 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 the 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 Hillsboro?

In April, in Hillsboro, Oregon, the average high-temperature is 58.3°F (14.6°C), and the average low-temperature is 39.4°F (4.1°C).

What is the average humidity in April in Hillsboro?

The average relative humidity in April in Hillsboro, Oregon, is 78%.

How many days does it rain in April in Hillsboro?

In Hillsboro, Oregon, in April, during 18.6 rainfall days, 2.64" (67mm) of precipitation is typically accumulated.

When it does not snow in Hillsboro?

In Hillsboro, Oregon, snow does not fall in April through October.

Does it snow in Hillsboro in April?

In April, in Hillsboro, Oregon, it doesn't snow. March is the latest month when it typically snows.

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

The average day length in April in Hillsboro is 13h and 34min.

When is the sunrise / sunset in April in Hillsboro?

On the first day of April in Hillsboro, sunrise is at 6:51 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 8:17 pm PDT.

How many hours of sunshine does Hillsboro have in April?

In Hillsboro, Oregon, the average sunshine duration in April is 7h.

What is the UV index reading in April in Hillsboro?

In April, the average daily maximum UV index in Hillsboro is 3. A UV Index reading of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Hillsboro, OR

Average temperature in April - Hillsboro, OR
  • Average high temperature in April: 58.3°F

The warmest month (with the highest average high temperature) is August (81.5°F).
The month with the lowest average high temperature is December (43.9°F).

  • Average low temperature in April: 39.4°F

The month with the highest average low temperature is August (55.4°F).
The coldest month (with the lowest average low temperature) is December (34°F).

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Average pressure in April
Hillsboro, OR

Average pressure in April - Hillsboro, OR
  • Average pressure in April: 30.07"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).

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Average wind speed in April
Hillsboro, OR

Average wind speed in April - Hillsboro, OR
  • Average wind speed in April: 4.8mph

The windiest month (with the highest average wind speed) is March (5mph).
The calmest months (with the lowest average wind speed) are June, August and September (4.3mph).

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Average humidity in April
Hillsboro, OR

Average humidity in April - Hillsboro, OR
  • Average humidity in April: 78%

The months with the highest relative humidity are January, February, November and December (85%).
The month with the lowest relative humidity is August (64%).

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Average rainfall in April
Hillsboro, OR

Average rainfall in April - Hillsboro, OR
  • Average rainfall in April: 2.64"

The wettest month (with the highest rainfall) is January (4.57").
The driest month (with the least rainfall) is August (0.31").

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Average rainfall days in April
Hillsboro, OR

Average rainfall days in April - Hillsboro, OR
  • Average rainfall days in April: 18.6 days

The month with the highest number of rainy days is March (20.8 days).
The month with the least rainy days is August (4.4 days).

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Average snowfall in April
Hillsboro, OR

Average snowfall in April - Hillsboro, OR
  • Average snowfall in April: 0"

The month with the highest snowfall is February (1.81").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in April
Hillsboro, OR

Average snowfall days in April - Hillsboro, OR
  • Average snowfall days in April: 0 days

The month with the highest number of snowfall days is February (2.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in April /
Average sunshine in April
Hillsboro, OR

Average daylight in April / Average sunshine in April - Hillsboro, OR
  • Average daylight in April: 13h and 34min

The month with the longest days is June (Average daylight: 15h and 38min).
The month with the shortest days is December (Average daylight: 8h and 46min).

  • Average sunshine in April: 7h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).

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Average sunshine days in April
Hillsboro, OR

Average sunshine days in April - Hillsboro, OR
  • Average sunshine days in April: 9 days

The month with the most sunshine days is July (24.4 days).
The month with the least sunshine days is March (8.5 days).

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Average UV index in April
Hillsboro, OR

Average UV index in April - Hillsboro, OR
  • Average UV index in April: 3

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in April
Hillsboro, OR

Average cloud cover in April - Hillsboro, OR
  • Average cloud cover in April: 57

The month with the most cloud cover is February (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 25).

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Average visibility in April
Hillsboro, OR

Average visibility in April - Hillsboro, OR
  • Average visibility in April: 5mi

The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are January and February (4mi).

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