April weather forecast
Salmon, ID

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Bright yellow trees along the shores of the iconic Salmon River in Salmon, Idaho
Bright yellow trees along the shores of the iconic Salmon River in Salmon, Idaho

Weather in April

April ushers in a pronounced shift in the weather, natural scenery of Salmon starts to morph from wintry white to springtime green. The warmer climes become more prominent, and rainfall is more regular with spring showers. The temperatures span approximately from 25°F (-3.9°C) to 41.9°F (5.5°C), exhibiting a noticeable incline compared to March. While certain days still carry a wisp of winter chills, the afternoons can spring a surprise with relative warmth. Nearing the end of the month, residents can bask in almost 14 daylight hours, heralding the advent of summer.

Temperature

Salmon's weather in April shows a minor rise in the average high-temperature, moving slightly up from March's 34°F (1.1°C) to a still wintry 41.9°F (5.5°C). The average low-temperature during April nights is a subzero cold 25°F (-3.9°C).

Humidity

In April, the average relative humidity is 74%.

Rainfall

In Salmon, in April, during 17.9 rainfall days, 1.61" (41mm) of precipitation is typically accumulated. In Salmon, during the entire year, the rain falls for 129.5 days and collects up to 12.4" (315mm) of precipitation.

Snowfall

Months with snowfall are January through May, September through December. In April, in Salmon, Idaho, it is snowing for 8.4 days. Throughout April, 3.39" (86mm) of snow is accumulated. Throughout the year, in Salmon, there are 63.5 snowfall days, and 22.76" (578mm) of snow is accumulated.

Daylight

In Salmon, Idaho, the average length of the day in April is 13h and 32min.
On the first day of the month, sunrise is at 7:14 am and sunset at 8:04 pm. On the last day of April, sunrise is at 6:24 am and sunset at 8:40 pm MDT.

Sunshine

In Salmon, the average sunshine in April is 9h.

UV index

In April, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In April, the maximum UV index of 2 transforms into these recommendations:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Around midday, solar radiation is most harmful; hence, exposure should be limited. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
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Frequently asked questions

How cold does it get in Salmon in April?

In April, the average high-temperature and low-temperature in Salmon are 41.9°F (5.5°C) and 25°F (-3.9°C) respectively.

What is the average humidity in April in Salmon?

In Salmon, the average relative humidity in April is 74%.

How many days does it rain in April in Salmon?

In Salmon, during April, the rain falls for 17.9 days and regularly aggregates up to 1.61" (41mm) of precipitation.

How many days does it snow in April in Salmon?

In Salmon, Idaho, in April, during 8.4 snowfall days, 3.39" (86mm) of snow is typically accumulated.

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

The average day length in April in Salmon is 13h and 32min.

When are sunrise and sunset in April in Salmon?

On the first day of April in Salmon, sunrise is at 7:14 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 8:40 pm MDT.

How many hours of sunshine does Salmon have in April?

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

What is the UV index reading in April in Salmon?

In Salmon, the average daily maximum UV index in April is 2. A UV Index value of 2, and less, symbolizes a low health risk 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
Salmon, ID

Average temperature in April - Salmon, ID
  • Average high temperature in April: 41.9°F

The warmest month (with the highest average high temperature) is July (75.7°F).
The month with the lowest average high temperature is December (25.2°F).

  • Average low temperature in April: 25°F

The month with the highest average low temperature is August (47.5°F).
The coldest months (with the lowest average low temperature) are January and December (9.5°F).

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Average pressure in April
Salmon, ID

Average pressure in April - Salmon, ID
  • Average pressure in April: 29.99"Hg

The month with the highest atmospheric pressure is January (30.25"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in April
Salmon, ID

Average wind speed in April - Salmon, ID
  • Average wind speed in April: 5.2mph

The windiest months (with the highest average wind speed) are March and April (5.2mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

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Average humidity in April
Salmon, ID

Average humidity in April - Salmon, ID
  • Average humidity in April: 74%

The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is August (43%).

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Average rainfall in April
Salmon, ID

Average rainfall in April - Salmon, ID
  • Average rainfall in April: 1.61"

The wettest month (with the highest rainfall) is June (2.05").
The driest months (with the least rainfall) are July and August (0.51").

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Average rainfall days in April
Salmon, ID

Average rainfall days in April - Salmon, ID
  • Average rainfall days in April: 17.9 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (6.3 days).

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Average snowfall in April
Salmon, ID

Average snowfall in April - Salmon, ID
  • Average snowfall in April: 3.39"

The month with the highest snowfall is February (5").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in April
Salmon, ID

Average snowfall days in April - Salmon, ID
  • Average snowfall days in April: 8.4 days

The month with the highest number of snowfall days is February (12.3 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in April / Average sunshine in April - Salmon, ID
  • Average daylight in April: 13h and 3min

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

  • Average sunshine in April: 9h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

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Average sunshine days in April
Salmon, ID

Average sunshine days in April - Salmon, ID
  • Average sunshine days in April: 7.7 days

The month with the most sunshine days is July (19.4 days).
The month with the least sunshine days is April (7.7 days).

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Average UV index in April
Salmon, ID

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

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).

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Average cloud cover in April
Salmon, ID

Average cloud cover in April - Salmon, ID
  • Average cloud cover in April: 42

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 13).

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Average visibility in April
Salmon, ID

Average visibility in April - Salmon, ID
  • Average visibility in April: 5mi

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

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Salmon, Idaho, USA

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