April weather forecastWest Slope, OR
April
Weather in April
April in West Slope, Oregon, is a moderate spring month, with an average temperature fluctuating between 58.6°F (14.8°C) and 39.9°F (4.4°C).Temperature
With the onset of April, the average high-temperature subtly transitions from a cool 52.7°F (11.5°C) in March to a refreshing 58.6°F (14.8°C). West Slope, in April, observes a steady average low-temperature of 39.9°F (4.4°C).Humidity
In April, the average relative humidity is 77%.Rainfall
In April, the rain falls for 18.7 days. Throughout April, 2.87" (73mm) of precipitation is accumulated. In West Slope, Oregon, during the entire year, the rain falls for 173.2 days and collects up to 30.55" (776mm) of precipitation.Snowfall
In West Slope, snow does not fall in April through October.Daylight
In West Slope, the average length of the day in April is 13h and 34min.On the first day of April, sunrise is at 6:49 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 8:17 pm PDT.
Sunshine
In West Slope, the average sunshine in April is 7.4h.UV index
In April, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index, 3 during April, leads to the following recommendations:
Exercise prevention - Warding off sunburn is urged. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
West Slope, 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 (44.2°F).
- Average low temperature in April: 39.9°F
The month with the highest average low temperature is August (55.6°F).
The coldest month (with the lowest average low temperature) is December (34.7°F).
Average pressure in April
West Slope, OR
- Average pressure in April: 30.07"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed in April
West Slope, OR
- Average wind speed in April: 4.8mph
The windiest month (with the highest average wind speed) is January (5.4mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in April
West Slope, OR
- Average humidity in April: 77%
The months with the highest relative humidity are February and December (84%).
The month with the lowest relative humidity is August (63%).
Average rainfall in April
West Slope, OR
- Average rainfall in April: 2.87"
The wettest month (with the highest rainfall) is December (4.61").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in April
West Slope, OR
- Average rainfall days in April: 18.7 days
The month with the highest number of rainy days is March (20.6 days).
The month with the least rainy days is August (4.6 days).
Average snowfall in April
West Slope, OR
- Average snowfall in April: 0"
The month with the highest snowfall is February (1.61").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in April
West Slope, OR
- Average snowfall days in April: 0 days
The month with the highest number of snowfall days is February (2.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in April /
Average sunshine in April
West Slope, 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 24min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in April
West Slope, OR
- Average sunshine days in April: 9.3 days
The month with the most sunshine days is July (24.9 days).
The month with the least sunshine days is March (8.6 days).
Average UV index in April
West Slope, 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
West Slope, OR
- Average cloud cover in April: 54
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in April
West Slope, OR
- Average visibility in April: 5mi
The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, May, June, October, November and December (5mi).
