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
Happy Valley in April denotes a subtle temperature transition, adjusting from an average high of a fresh 52.5°F (11.4°C) in March to a moderate 58.6°F (14.8°C). Happy Valley encounters a steady low-temperature average of 39.7°F (4.3°C) throughout the month of April.Humidity
In Happy Valley, the average relative humidity in April is 77%.Rainfall
In Happy Valley, in April, during 18.6 rainfall days, 3.19" (81mm) of precipitation is typically accumulated. In Happy Valley, Oregon, during the entire year, the rain falls for 172.2 days and collects up to 31.3" (795mm) of precipitation.Snowfall
April through October are months without snowfall in Happy Valley.Daylight
The average length of the day in April in Happy Valley is 13h and 34min.On the first day of the month, sunrise is at 6:48 am and sunset at 7:38 pm. On the last day of April, sunrise is at 5:58 am and sunset at 8:16 pm PDT.
Sunshine
The average sunshine in April in Happy Valley, Oregon, is 7.8h.UV index
In April, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 3 during April translates into the following directions:
Exercise prevention - Precautions against solar damage are endorsed. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Frequently asked questions
What is the usual temperature for Happy Valley in April?
What is the average humidity in April in Happy Valley?
How many days does it rain in April in Happy Valley?
When it does not snow in Happy Valley?
Does it snow in Happy Valley in April?
How many hours of daylight does Happy Valley have in April?
When are sunrise and sunset in April in Happy Valley?
How long on average sun shines in April in Happy Valley?
How high is the UV index in April in Happy Valley?
Average temperature in April
Happy Valley, OR
- Average high temperature in April: 58.6°F
The warmest month (with the highest average high temperature) is August (81.7°F).
The month with the lowest average high temperature is December (44.4°F).
- Average low temperature in April: 39.7°F
The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is December (34.7°F).
Average pressure in April
Happy Valley, OR
- Average pressure in April: 30.06"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in April
Happy Valley, OR
- Average wind speed in April: 4.8mph
The windiest month (with the highest average wind speed) is January (6mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in April
Happy Valley, OR
- Average humidity in April: 77%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is August (63%).
Average rainfall in April
Happy Valley, OR
- Average rainfall in April: 3.19"
The wettest month (with the highest rainfall) is December (4.57").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in April
Happy Valley, OR
- Average rainfall days in April: 18.6 days
The month with the highest number of rainy days is March (20.4 days).
The month with the least rainy days is July (4.8 days).
Average snowfall in April
Happy Valley, OR
- Average snowfall in April: 0"
The month with the highest snowfall is March (1.46").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in April
Happy Valley, OR
- Average snowfall days in April: 0.1 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in April /
Average sunshine in April
Happy Valley, OR
- 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: 7h and 5min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in April
Happy Valley, OR
- Average sunshine days in April: 8.5 days
The month with the most sunshine days is July (23.9 days).
The month with the least sunshine days is February (8.3 days).
Average UV index in April
Happy Valley, OR
- Average UV index in April: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in April
Happy Valley, OR
- Average cloud cover in April: 53
The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in April
Happy Valley, OR
- Average visibility in April: 5mi
The months with the highest visibility are July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, May, June, November and December (5mi).
Happy Valley, Oregon, USA
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