April weather forecast
Challis, ID

Weather in April

April, the same as March, is a wintry spring month in Challis, Idaho, with temperature in the range of an average high of 42.4°F (5.8°C) and an average low of 25°F (-3.9°C).

Temperature

In April, the average high-temperature slightly increases from 35.2°F (1.8°C) in March to a still cold 42.4°F (5.8°C). In April, in Challis, Idaho, the average low-temperature is 25°F (-3.9°C).

Humidity

In April, the average relative humidity is 73%.

Rainfall

In Challis, during 9 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. Throughout the year, there are 75.7 rainfall days, and 6.38" (162mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through June, September through December. In Challis, in April, during 4.8 snowfall days, 1.57" (40mm) of snow is typically accumulated. In Challis, during the entire year, snow falls for 51.7 days and aggregates up to 18.62" (473mm) of snow.

Daylight

The average length of the day in April is 13h and 31min.
On the first day of the month, sunrise is at 7:17 am and sunset at 8:04 pm. On the last day of April, in Challis, sunrise is at 6:28 am and sunset at 8:40 pm MDT.

Sunshine

In April, the average sunshine in Challis, Idaho, is 9.9h.

UV index

The months with the lowest UV index are January through April, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In April, the average maximum UV index of 2 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in April in Challis?

In April, the average relative humidity in Challis, Idaho, is 73%.

How many days does it rain in April in Challis?

In April, in Challis, Idaho, the rain falls for 9 days. Throughout April, 0.59" (15mm) of precipitation is accumulated.

How much does it snow in Challis in April?

In Challis, Idaho, during April, snow falls for 4.8 days and regularly aggregates up to 1.57" (40mm) of snow.

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

The average day length in April in Challis, Idaho, is 13h and 31min.

What time are sunrise and sunset in April in Challis?

On the first day of April in Challis, Idaho, sunrise is at 7:17 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 8:40 pm MDT.

How long on average sun shines in April in Challis?

The average sunshine duration in April in Challis, Idaho, is 9.9h.

What is the month with the lowest UV index in Challis?

The months with the lowest UV index are January through April, October through December, with an average maximum UV index of 2.

What is the UV index intensity in April in Challis?

The average daily maximum UV index in April in Challis is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Challis, ID

Average temperature in April - Challis, ID
  • Average high temperature in April: 42.4°F

The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is December (26.1°F).

  • Average low temperature in April: 25°F

The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is January (8.1°F).

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Average pressure in April
Challis, ID

Average pressure in April - Challis, ID
  • Average pressure in April: 29.98"Hg

The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in April
Challis, ID

Average wind speed in April - Challis, ID
  • Average wind speed in April: 5.6mph

The windiest months (with the highest average wind speed) are June and July (5.7mph).
The calmest month (with the lowest average wind speed) is January (4.8mph).

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Average humidity in April
Challis, ID

Average humidity in April - Challis, ID
  • Average humidity in April: 73%

The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are July and August (38%).

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Average rainfall in April
Challis, ID

Average rainfall in April - Challis, ID
  • Average rainfall in April: 0.59"

The wettest month (with the highest rainfall) is June (1.1").
The driest month (with the least rainfall) is July (0.28").

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Average rainfall days in April
Challis, ID

Average rainfall days in April - Challis, ID
  • Average rainfall days in April: 9 days

The month with the highest number of rainy days is June (10.2 days).
The month with the least rainy days is January (3.8 days).

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Average snowfall in April
Challis, ID

Average snowfall in April - Challis, ID
  • Average snowfall in April: 1.57"

The month with the highest snowfall is February (3.54").
The months with the least snowfall are July and August (0").

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Average snowfall days in April
Challis, ID

Average snowfall days in April - Challis, ID
  • Average snowfall days in April: 4.8 days

The month with the highest number of snowfall days is December (10.1 days).
The months with the least snowfall days are July and August (0 days).

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

Average daylight in April / Average sunshine in April - Challis, ID
  • Average daylight in April: 13h and 31min

The month with the longest days is June (Average daylight: 15h and 29min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in April: 9h and 54min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 48min).

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Average sunshine days in April
Challis, ID

Average sunshine days in April - Challis, ID
  • Average sunshine days in April: 17.2 days

The month with the most sunshine days is July (24.1 days).
The months with the least sunshine days are March and April (17.2 days).

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Average UV index in April
Challis, ID

Average UV index in April - Challis, ID
  • Average UV index in April: 2

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

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Average cloud cover in April
Challis, ID

Average cloud cover in April - Challis, ID
  • Average cloud cover in April: 34

The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 11).

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Average visibility in April
Challis, ID

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

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

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