Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
The shift into April is accompanied by a modest temperature increase, with the average high-temperature edging up from a cold 32.2°F (0.1°C) in March to a still icy 39.9°F (4.4°C). Throughout the month of April, Ketchum witnesses an average low-temperature of 23.4°F (-4.8°C).Humidity
In April, the average relative humidity is 75%.Rainfall
In April, the rain falls for 11.9 days. Throughout April, 1.5" (38mm) of precipitation is accumulated. Throughout the year, there are 107.7 rainfall days, and 15.63" (397mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. In April, it is snowing for 10.6 days. Throughout April, 5.83" (148mm) of snow is accumulated. Throughout the year, there are 88.2 snowfall days, and 69.45" (1764mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 28min.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, sunrise is at 6:29 am and sunset at 8:39 pm MDT.
Sunshine
In April, the average sunshine in Ketchum is 9.6h.UV index
In Ketchum, Idaho, the average daily maximum UV index in April is 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: In April, the maximum UV index of 2 suggests these recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is April cold?
What is the average humidity in April?
How much does it rain in Ketchum in April?
How much does it snow in April?
How many hours of daylight does Ketchum have in April?
When are sunrise and sunset in April in Ketchum?
How long on average sun shines in April?
What is the UV index reading in April?
Average temperature in April
Ketchum, ID
- Average high temperature in April: 39.9°F
The warmest month (with the highest average high temperature) is July (74.1°F).
The month with the lowest average high temperature is December (25°F).
- Average low temperature in April: 23.4°F
The months with the highest average low temperature are July and August (50.5°F).
The coldest month (with the lowest average low temperature) is January (8.4°F).
Average pressure in April
Ketchum, ID
- Average pressure in April: 29.97"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in April
Ketchum, ID
- Average wind speed in April: 5.9mph
The windiest month (with the highest average wind speed) is July (6.3mph).
The calmest month (with the lowest average wind speed) is January (4.5mph).
Average humidity in April
Ketchum, ID
- Average humidity in April: 75%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is August (37%).
Average rainfall in April
Ketchum, ID
- Average rainfall in April: 1.5"
The wettest month (with the highest rainfall) is March (2.01").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in April
Ketchum, ID
- Average rainfall days in April: 11.9 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is July (5.9 days).
Average snowfall in April
Ketchum, ID
- Average snowfall in April: 5.83"
The month with the highest snowfall is February (15").
The months with the least snowfall are July and August (0").
Average snowfall days in April
Ketchum, ID
- Average snowfall days in April: 10.6 days
The month with the highest number of snowfall days is March (16 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in April /
Average sunshine in April
Ketchum, ID
- Average daylight in April: 13h and 3min
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: 9h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).
Average sunshine days in April
Ketchum, ID
- Average sunshine days in April: 11.1 days
The month with the most sunshine days is July (20.8 days).
The month with the least sunshine days is April (11.1 days).
Average UV index in April
Ketchum, ID
- Average UV index in April: 2
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in April
Ketchum, ID
- Average cloud cover in April: 33
The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 10).
Average visibility in April
Ketchum, 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, February and December (4mi).
Ketchum, Idaho, USA
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