April weather forecastHappy Valley, OR
April
Weather in April
April is a moderate spring month in Happy Valley, Oregon, with an average temperature fluctuating between 39.7°F (4.3°C) and 58.6°F (14.8°C).Temperature
Happy Valley in April observes a minor temperature shift, with average high-temperatures adjusting from a cool 52.5°F (11.4°C) in March to a refreshing 58.6°F (14.8°C). During April, the temperature is averaged to a low of 39.7°F (4.3°C) at night.Humidity
In April, the average relative humidity is 77%.Rainfall
In Happy Valley, during April, the rain falls for 18.6 days and regularly aggregates up to 3.19" (81mm) of precipitation. In Happy Valley, during the entire year, the rain falls for 172.2 days and collects up to 31.3" (795mm) of precipitation.Snowfall
In Happy Valley, snow does not fall in April through October.Daylight
The average length of the day in April 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
In April, the average sunshine is 7.8h.UV index
In April, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In April, a daily UV index of 3 turns into the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 36min
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 48min
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).
