April weather forecast
Viola, ID

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Weather in April

April in Viola, Idaho, is a cool spring month, with temperature in the range of an average low of 36°F (2.2°C) and an average high of 54.5°F (12.5°C).

Temperature

The average high-temperature mildly increases in April, edging from a frosty 46.8°F (8.2°C) in March to a fresh 54.5°F (12.5°C). During April, the nighttime temperature in Viola averages to an icy 36°F (2.2°C).

Humidity

The average relative humidity in April in Viola is 72%.

Rainfall

In Viola, during April, the rain falls for 18.1 days and regularly aggregates up to 2.01" (51mm) of precipitation. In Viola, during the entire year, the rain falls for 143.2 days and collects up to 20.51" (521mm) of precipitation.

Snowfall

Months with snowfall are January through May, September through December. In Viola, in April, snow falls for 4.1 days, with typically accumulated 1.73" (44mm) of snow. In Viola, during the entire year, snow falls for 60.2 days and aggregates up to 47.24" (1200mm) of snow.

Daylight

In April, the average length of the day is 13h and 38min.
On the first day of April in Viola, sunrise is at 6:25 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 5:32 am and sunset at 7:57 pm PDT.

Sunshine

The average sunshine in April in Viola, Idaho, is 9h.

UV index

In April, the average daily maximum UV index in Viola is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index of 3 during April leads to these instructions:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Updated: Feb 12, 2024 | Published by: Weather U.S. | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What is the average April temperature in Viola?

April temperatures vary between a high-temperature of 54.5°F (12.5°C) and a low-temperature of 36°F (2.2°C).

What is the average humidity in April in Viola?

In Viola, Idaho, the average relative humidity in April is 72%.

How much does it rain in Viola in April?

In Viola, in April, during 18.1 rainfall days, 2.01" (51mm) of precipitation is typically accumulated.

How much does it snow in Viola in April?

In Viola, during April, snow falls for 4.1 days and regularly aggregates up to 1.73" (44mm) of snow.

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

The average day length in April in Viola is 13h and 38min.

What time are sunrise and sunset in April in Viola?

In April, on the first day of the month, sunrise is at 6:25 am and sunset at 7:18 pm. On the last day of the month, in Viola, sunrise is at 5:32 am and sunset at 7:57 pm PDT.

How many hours of sunshine does Viola have in April?

In Viola, Idaho, the average sunshine duration in April is 9h.

What is the UV index reading in April in Viola?

In April, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Viola, ID

Average temperature in April - Viola, ID
  • Average high temperature in April: 54.5°F

The warmest month (with the highest average high temperature) is August (83.7°F).
The month with the lowest average high temperature is December (34°F).

  • Average low temperature in April: 36°F

The month with the highest average low temperature is August (58.1°F).
The coldest month (with the lowest average low temperature) is December (24.1°F).

Average pressure in April
Viola, ID

Average pressure in April - Viola, ID
  • Average pressure in April: 30"Hg

The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).

Average wind speed in April
Viola, ID

Average wind speed in April - Viola, ID
  • Average wind speed in April: 6.3mph

The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest months (with the lowest average wind speed) are July, August and September (4.8mph).

Average humidity in April
Viola, ID

Average humidity in April - Viola, ID
  • Average humidity in April: 72%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (40%).

Average rainfall in April
Viola, ID

Average rainfall in April - Viola, ID
  • Average rainfall in April: 2.01"

The wettest month (with the highest rainfall) is December (2.68").
The driest months (with the least rainfall) are July and August (0.47").

Average rainfall days in April
Viola, ID

Average rainfall days in April - Viola, ID
  • Average rainfall days in April: 18.1 days

The month with the highest number of rainy days is April (18.1 days).
The months with the least rainy days are July and August (5.9 days).

Average snowfall in April
Viola, ID

Average snowfall in April - Viola, ID
  • Average snowfall in April: 1.73"

The month with the highest snowfall is January (12.56").
The months with the least snowfall are June, July and August (0").

Average snowfall days in April
Viola, ID

Average snowfall days in April - Viola, ID
  • Average snowfall days in April: 4.1 days

The month with the highest number of snowfall days is December (14.1 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in April /
Average sunshine in April
Viola, ID

Average daylight in April / Average sunshine in April - Viola, ID
  • Average daylight in April: 13h and 4min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

  • Average sunshine in April: 9h and 0min

The month with the most sunshine is August (Average sunshine: 12h and 0min).
The months with the least sunshine are January, February and December (Average sunshine: 4h and 30min).

Average sunshine days in April
Viola, ID

Average sunshine days in April - Viola, ID
  • Average sunshine days in April: 9.3 days

The month with the most sunshine days is July (23.3 days).
The month with the least sunshine days is February (9.2 days).

Average UV index in April
Viola, ID

Average UV index in April - Viola, ID
  • Average UV index in April: 3

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).

Average cloud cover in April
Viola, ID

Average cloud cover in April - Viola, ID
  • Average cloud cover in April: 41

The month with the most cloud cover is February (Cloud cover 54).
The months with the least cloud cover are July and August (Cloud cover 12).

Average visibility in April
Viola, ID

Average visibility in April - Viola, ID
  • Average visibility in April: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (4mi).

Viola, Idaho, USA

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