April weather forecast
Hermiston, OR

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Weather in April

April sees a pronounced shift in the Hermiston, Oregon, weather as the spring season fully unfolds. As the weather turns warmer, the last vestiges of winter snowfall disappear entirely. The month revels in an increasing amount of sunshine and extended daylight hours, making it an inviting time for outdoor activities. It is worth noting that though the city does receive rain in April, this month experiences the lowest number in terms of rainfall days at 10.9. Radiating warmth and vibrancy, April typically ushers in a unique freshness intrinsic to the city's spring season.

Temperature

In Hermiston, stepping into April brings a gentle temperature nudge, moving slightly up from March's fresh 53.2°F (11.8°C) to a comfortable 61.5°F (16.4°C). During April, the nighttime temperature in Hermiston averages of 42.6°F (5.9°C).

Humidity

In April, the average relative humidity in Hermiston is 56%.

Rainfall

In Hermiston, in April, it is raining for 10.9 days, with typically 0.67" (17mm) of accumulated precipitation. In Hermiston, during the entire year, the rain falls for 109.3 days and collects up to 8.11" (206mm) of precipitation.

Snowfall

In Hermiston, snow does not fall in April through August and October.

Daylight

In April, the average length of the day in Hermiston is 13h and 35min.
On the first day of the month, sunrise is at 6:35 am and sunset at 7:26 pm. On the last day of April, in Hermiston, Oregon, sunrise is at 5:44 am and sunset at 8:04 pm PDT.

Sunshine

In Hermiston, the average sunshine in April is 10.2h.

UV index

In April, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 4 during April leads to these advisories:
Take precautions - Protection against sun damage is advised. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
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Frequently asked questions

What is the average April temperature in Hermiston?

In Hermiston, 61.5°F (16.4°C) is the average high-temperature and 42.6°F (5.9°C) is the average low-temperature during April.

What is the average humidity in April in Hermiston?

In Hermiston, the average relative humidity in April is 56%.

How many days does it rain in April in Hermiston?

In Hermiston, Oregon, in April, it is raining for 10.9 days, with typically 0.67" (17mm) of accumulated precipitation.

When it does not snow in Hermiston?

April through August and October are months without snowfall in Hermiston, Oregon.

Does it snow in Hermiston in April?

In April, in Hermiston, 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 Hermiston?

In Hermiston, the average day length in April is 13h and 35min.

When is the sunrise / sunset in April in Hermiston?

On the first day of April in Hermiston, Oregon, sunrise is at 6:35 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 8:04 pm PDT.

How long on average sun shines in April in Hermiston?

In April, the average sunshine duration is 10.2h.

What is the UV index reading in April in Hermiston?

In Hermiston, the average daily maximum UV index in April is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Hermiston, OR

Average temperature in April - Hermiston, OR
  • Average high temperature in April: 61.5°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is December (38.8°F).

  • Average low temperature in April: 42.6°F

The month with the highest average low temperature is August (64°F).
The coldest month (with the lowest average low temperature) is December (28.6°F).

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Average pressure in April
Hermiston, OR

Average pressure in April - Hermiston, OR
  • Average pressure in April: 30"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).

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Average wind speed in April
Hermiston, OR

Average wind speed in April - Hermiston, OR
  • Average wind speed in April: 9.2mph

The windiest month (with the highest average wind speed) is April (9.2mph).
The calmest month (with the lowest average wind speed) is December (6.1mph).

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Average humidity in April
Hermiston, OR

Average humidity in April - Hermiston, OR
  • Average humidity in April: 56%

The month with the highest relative humidity is January (79%).
The months with the lowest relative humidity are July and August (36%).

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Average rainfall in April
Hermiston, OR

Average rainfall in April - Hermiston, OR
  • Average rainfall in April: 0.67"

The wettest months (with the highest rainfall) are March and December (1.06").
The driest month (with the least rainfall) is July (0.16").

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Average rainfall days in April
Hermiston, OR

Average rainfall days in April - Hermiston, OR
  • Average rainfall days in April: 10.9 days

The month with the highest number of rainy days is March (14.5 days).
The month with the least rainy days is August (3.3 days).

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Average snowfall in April
Hermiston, OR

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

The month with the highest snowfall is February (2.72").
The months with the least snowfall are April, May, June, July, August and October (0").

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Average snowfall days in April
Hermiston, OR

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

The month with the highest number of snowfall days is December (3.7 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).

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

Average daylight in April / Average sunshine in April - Hermiston, OR
  • Average daylight in April: 13h and 4min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in April: 10h and 1min

The month with the most sunshine is August (Average sunshine: 12h and 6min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).

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Average sunshine days in April
Hermiston, OR

Average sunshine days in April - Hermiston, OR
  • Average sunshine days in April: 16.8 days

The month with the most sunshine days is July (25.5 days).
The month with the least sunshine days is February (13.3 days).

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Average UV index in April
Hermiston, OR

Average UV index in April - Hermiston, OR
  • Average UV index in April: 4

The month with the highest UV index is July (UV index 7).
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
Hermiston, OR

Average cloud cover in April - Hermiston, OR
  • Average cloud cover in April: 33

The months with the most cloud cover are January and December (Cloud cover 43).
The months with the least cloud cover are July and August (Cloud cover 9).

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Average visibility in April
Hermiston, OR

Average visibility in April - Hermiston, OR
  • 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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Hermiston, Oregon, USA

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