April weather forecastSwan Valley, ID
April
Weather in April
April, like March, in Swan Valley, Idaho, is another cold spring month, with an average temperature ranging between max 42.1°F (5.6°C) and min 22.8°F (-5.1°C).Temperature
Swan Valley experiences a minor temperature shift with the start of April, with average high-temperatures moving from a cold 33.8°F (1°C) in March to a still icy 42.1°F (5.6°C). During April, the average low-temperature is recorded at a subzero cold 22.8°F (-5.1°C).Humidity
In April, the average relative humidity in Swan Valley is 83%.Rainfall
In April, the rain falls for 16.6 days. Throughout April, 2.83" (72mm) of precipitation is accumulated. Throughout the year, there are 127 rainfall days, and 24.29" (617mm) of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall. In Swan Valley, in April, during 14.8 snowfall days, 11.77" (299mm) of snow is typically accumulated. In Swan Valley, during the entire year, snow falls for 126.6 days and aggregates up to 110.28" (2801mm) of snow.Daylight
In April, the average length of the day is 13h and 28min.On the first day of the month, sunrise is at 7:05 am and sunset at 7:52 pm. On the last day of April, sunrise is at 6:18 am and sunset at 8:26 pm MDT.
Sunshine
The average sunshine in April is 8.2h.UV index
In Swan Valley, the average daily maximum UV index in April is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 2 in April translates into this advice:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Swan Valley, ID
- Average high temperature in April: 42.1°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is December (24.3°F).
- Average low temperature in April: 22.8°F
The months with the highest average low temperature are July and August (45.3°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).
Average pressure in April
Swan Valley, ID
- Average pressure in April: 29.96"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in April
Swan Valley, ID
- Average wind speed in April: 5mph
The windiest month (with the highest average wind speed) is June (5.7mph).
The calmest month (with the lowest average wind speed) is January (4.3mph).
Average humidity in April
Swan Valley, ID
- Average humidity in April: 83%
The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is August (46%).
Average rainfall in April
Swan Valley, ID
- Average rainfall in April: 2.83"
The wettest month (with the highest rainfall) is February (2.91").
The driest month (with the least rainfall) is July (0.91").
Average rainfall days in April
Swan Valley, ID
- Average rainfall days in April: 16.6 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (4.6 days).
Average snowfall in April
Swan Valley, ID
- Average snowfall in April: 11.77"
The month with the highest snowfall is February (22.91").
The months with the least snowfall are July and August (0").
Average snowfall days in April
Swan Valley, ID
- Average snowfall days in April: 14.8 days
The months with the highest number of snowfall days are February and December (22.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in April /
Average sunshine in April
Swan Valley, ID
- Average daylight in April: 13h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in April: 8h and 12min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in April
Swan Valley, ID
- Average sunshine days in April: 5.3 days
The month with the most sunshine days is September (16.2 days).
The month with the least sunshine days is April (5.3 days).
Average UV index in April
Swan Valley, 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, March, November and December (UV index 1).
Average cloud cover in April
Swan Valley, ID
- Average cloud cover in April: 47
The month with the most cloud cover is February (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 13).
Average visibility in April
Swan Valley, ID
- Average visibility in April: 4mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (3mi).
