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 onset of April marks a slight increase in the average high-temperature, moving from a frosty 48.7°F (9.3°C) in March to a cool 54.1°F (12.3°C). In Lummi Island, the nighttime temperature averages to an icy 41°F (5°C) during April.Humidity
In Lummi Island, the average relative humidity in April is 80%.Rainfall
In Lummi Island, Washington, in April, during 17.8 rainfall days, 2.8" (71mm) of precipitation is typically accumulated. In Lummi Island, during the entire year, the rain falls for 178.6 days and collects up to 37.32" (948mm) of precipitation.Snowfall
Months with snowfall in Lummi Island are January through April, November and December. April is the last month it regularly snows. During 0.3 snowfall days, in April, Lummi Island aggregates 0.08" (2mm) of snow. Throughout the year, there are 10.7 snowfall days, and 6.57" (167mm) of snow is accumulated.Daylight
In Lummi Island, Washington, the average length of the day in April is 13h and 44min.On the first day of April in Lummi Island, Washington, sunrise is at 6:46 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:25 pm PDT.
Sunshine
In Lummi Island, Washington, the average sunshine in April is 8.2h.UV index
The average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In April, an average UV index of 3 transforms into the following instructions:
Take necessary precautions - Defending against sun damage is advocated. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in April?
What is the average humidity in April?
How many days does it rain in April in Lummi Island?
What is the last month it snows?
What is the average length of the day in April?
When is the sunrise / sunset in April in Lummi Island?
How many hours of sunshine does Lummi Island have in April?
What is the UV index intensity in April?
Average temperature in April
Lummi Island, WA
- Average high temperature in April: 54.1°F
The warmest month (with the highest average high temperature) is August (71.1°F).
The month with the lowest average high temperature is December (41.9°F).
- Average low temperature in April: 41°F
The month with the highest average low temperature is August (53.8°F).
The coldest month (with the lowest average low temperature) is February (35.2°F).
Average pressure in April
Lummi Island, WA
- Average pressure in April: 30.04"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).
Average wind speed in April
Lummi Island, WA
- Average wind speed in April: 5.2mph
The windiest month (with the highest average wind speed) is November (6.2mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in April
Lummi Island, WA
- Average humidity in April: 80%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is July (74%).
Average rainfall in April
Lummi Island, WA
- Average rainfall in April: 2.8"
The wettest month (with the highest rainfall) is November (5.71").
The driest month (with the least rainfall) is July (0.67").
Average rainfall days in April
Lummi Island, WA
- Average rainfall days in April: 17.8 days
The month with the highest number of rainy days is November (20.1 days).
The month with the least rainy days is August (7.3 days).
Average snowfall in April
Lummi Island, WA
- Average snowfall in April: 0.08"
The month with the highest snowfall is February (2.56").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Lummi Island, WA
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is February (3.8 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
Lummi Island, WA
- Average daylight in April: 13h and 4min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in April: 8h and 1min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The months with the least sunshine are January and December (Average sunshine: 4h and 12min).
Average sunshine days in April
Lummi Island, WA
- Average sunshine days in April: 10.3 days
The month with the most sunshine days is August (21.9 days).
The month with the least sunshine days is November (8.5 days).
Average UV index in April
Lummi Island, WA
- Average UV index in April: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in April
Lummi Island, WA
- Average cloud cover in April: 48
The months with the most cloud cover are January and December (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in April
Lummi Island, WA
- Average visibility in April: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Lummi Island, Washington, USA
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