April weather forecast
Riggins, ID

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The scenic Snake River between large mountains, with pitched tents and visible footpaths in the mountains near Riggins, Idaho
The scenic Snake River between large mountains, with pitched tents and visible footpaths in the mountains near Riggins, Idaho

Weather in April

April in Riggins, Idaho, features an evident shift away from winter towards the warmer spring season. Compared to March, this month sees an increase in both average high and low temperatures. Transitioning into May, the weather continues to warm up with declining rain and snowfall levels. A notable pattern is the drop in snowfall, from 22.52" (572mm) in March all the way down to 11.5" (292mm) in April. This reduction indicates the weakening grip of winter over Riggins' weather.

Temperature

April's onset is marked by a subtle temperature increase, moving from 33.4°F (0.8°C) in March to a still wintry 41.7°F (5.4°C). In the month of April, the temperature generally rests at an average low of 23.4°F (-4.8°C).

Humidity

In Riggins, the average relative humidity in April is 85%.

Rainfall

In Riggins, in April, it is raining for 8.8 days, with typically 3.27" (83mm) of accumulated precipitation. In Riggins, during the entire year, the rain falls for 81 days and collects up to 32.68" (830mm) of precipitation.

Snowfall

Months with snowfall are January through December. In Riggins, in April, during 19.8 snowfall days, 22.52" (572mm) of snow is typically accumulated. In Riggins, during the entire year, snow falls for 160 days and aggregates up to 210.63" (5350mm) of snow.

Daylight

In April, the average length of the day is 13h and 34min.
On the first day of the month, sunrise is at 6:23 am and sunset at 7:14 pm. On the last day of April, sunrise is at 5:33 am and sunset at 7:51 pm PDT.

Sunshine

The average sunshine in April in Riggins is 6.2h.

UV index

The months with the lowest UV index are January through April, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In April, an average UV index of 1 transforms into the following instructions:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Updated: Jul 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it cold during April?

During April, Riggins experiences an average high-temperature of 41.7°F (5.4°C) and a low-temperature of 23.4°F (-4.8°C).

What is the average humidity in April?

In Riggins, the average relative humidity in April is 85%.

How many days does it rain in April?

In April, the rain falls for 8.8 days. Throughout April, 3.27" (83mm) of precipitation is accumulated.

How much does it snow in April?

In Riggins, during April, snow falls for 19.8 days and regularly aggregates up to 22.52" (572mm) of snow.

How many hours of daylight does Riggins have in April?

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

When is the sunrise / sunset in April in Riggins?

In April, on the first day of the month, sunrise is at 6:23 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 7:51 pm PDT.

How long on average sun shines in April?

In Riggins, the average sunshine duration in April is 6.2h.

What is the month with the lowest UV index?

The months with the lowest UV index are January through April, November and December, with an average maximum UV index of 1.

What is the UV index reading in April?

The average daily maximum UV index in April is 1. A UV Index value of 2, and less, symbolizes a low health threat from unprotected exposure to UV radiation.
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
Riggins, ID

Average temperature in April - Riggins, ID
  • Average high temperature in April: 41.7°F

The warmest months (with the highest average high temperature) are July and August (75.7°F).
The month with the lowest average high temperature is December (25.3°F).

  • Average low temperature in April: 23.4°F

The month with the highest average low temperature is August (45.7°F).
The coldest month (with the lowest average low temperature) is January (12°F).

Average pressure in April
Riggins, ID

Average pressure in April - Riggins, ID
  • Average pressure in April: 30.01"Hg

The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in April
Riggins, ID

Average wind speed in April - Riggins, ID
  • Average wind speed in April: 5.5mph

The windiest month (with the highest average wind speed) is March (6mph).
The calmest months (with the lowest average wind speed) are May, June, August and September (5.3mph).

Average humidity in April
Riggins, ID

Average humidity in April - Riggins, ID
  • Average humidity in April: 85%

The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is August (48%).

Average rainfall in April
Riggins, ID

Average rainfall in April - Riggins, ID
  • Average rainfall in April: 3.27"

The wettest month (with the highest rainfall) is February (4.49").
The driest month (with the least rainfall) is July (0.51").

Average rainfall days in April
Riggins, ID

Average rainfall days in April - Riggins, ID
  • Average rainfall days in April: 8.8 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (1.8 days).

Average snowfall in April
Riggins, ID

Average snowfall in April - Riggins, ID
  • Average snowfall in April: 22.52"

The month with the highest snowfall is February (36.1").
The month with the least snowfall is August (0.08").

Average snowfall days in April
Riggins, ID

Average snowfall days in April - Riggins, ID
  • Average snowfall days in April: 19.8 days

The month with the highest number of snowfall days is March (24.9 days).
The month with the least snowfall days is August (0.3 days).

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

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

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: 6h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).

Average sunshine days in April
Riggins, ID

Average sunshine days in April - Riggins, ID
  • Average sunshine days in April: 6.9 days

The month with the most sunshine days is July (22.3 days).
The months with the least sunshine days are February and March (6.3 days).

Average UV index in April
Riggins, ID

Average UV index in April - Riggins, ID
  • Average UV index in April: 1

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

Average cloud cover in April
Riggins, ID

Average cloud cover in April - Riggins, ID
  • Average cloud cover in April: 58

The month with the most cloud cover is February (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 13).

Average visibility in April
Riggins, ID

Average visibility in April - Riggins, ID
  • Average visibility in April: 4mi

The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).

Riggins, Idaho, USA

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