April weather forecastGrand Isle, ME
April
Weather in April
April is a wintry spring month in Grand Isle, Maine, with temperature in the range of an average low of 26.1°F (-3.3°C) and an average high of 40.8°F (4.9°C).Temperature
With the onset of April, Grand Isle experiences a temperature shift, with the average high-temperature moving from a subzero cold 27.7°F (-2.4°C) in March to a cold 40.8°F (4.9°C). Grand Isle experiences a consistent average temperature of 26.1°F (-3.3°C) throughout the nights in April.Humidity
The average relative humidity in April is 88%.Rainfall
The month with the most rainfall is April, when the rain falls for 14 days and typically aggregates up to 2.95" (75mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Grand Isle, during April, snow falls for 12.3 days and regularly aggregates up to 7.95" (202mm) of snow. Throughout the year, there are 107.8 snowfall days, and 71.34" (1812mm) of snow is accumulated.Daylight
In Grand Isle, the average length of the day in April is 13h and 39min.On the first day of the month, sunrise is at 6:09 am and sunset at 7:02 pm. On the last day of April, in Grand Isle, sunrise is at 5:16 am and sunset at 7:43 pm EDT.
Sunshine
In Grand Isle, the average sunshine in April is 5.2h.UV index
The average daily maximum UV index in April is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In April, the maximum UV index of 2 suggests this advice:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Grand Isle, ME
- Average high temperature in April: 40.8°F
The warmest month (with the highest average high temperature) is July (74.3°F).
The month with the lowest average high temperature is January (18°F).
- Average low temperature in April: 26.1°F
The month with the highest average low temperature is July (53.6°F).
The coldest month (with the lowest average low temperature) is January (2.8°F).
Average pressure in April
Grand Isle, ME
- Average pressure in April: 29.94"Hg
The months with the highest atmospheric pressure are March, September and November (30.01"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in April
Grand Isle, ME
- Average wind speed in April: 7.9mph
The windiest months (with the highest average wind speed) are January and February (8.2mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in April
Grand Isle, ME
- Average humidity in April: 88%
The month with the highest relative humidity is March (94%).
The month with the lowest relative humidity is May (76%).
Average rainfall in April
Grand Isle, ME
- Average rainfall in April: 2.95"
The wettest month (with the highest rainfall) is April (2.95").
The driest month (with the least rainfall) is February (1.97").
Average rainfall days in April
Grand Isle, ME
- Average rainfall days in April: 14 days
The month with the highest number of rainy days is July (17.1 days).
The months with the least rainy days are January and February (4.3 days).
Average snowfall in April
Grand Isle, ME
- Average snowfall in April: 7.95"
The month with the highest snowfall is January (14.92").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Grand Isle, ME
- Average snowfall days in April: 12.3 days
The month with the highest number of snowfall days is January (21.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Grand Isle, ME
- Average daylight in April: 13h and 42min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in April: 5h and 12min
The month with the most sunshine is August (Average sunshine: 9h and 30min).
The month with the least sunshine is February (Average sunshine: 2h and 6min).
Average sunshine days in April
Grand Isle, ME
- Average sunshine days in April: 7.9 days
The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is April (7.9 days).
Average UV index in April
Grand Isle, ME
- Average UV index in April: 2
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in April
Grand Isle, ME
- Average cloud cover in April: 66
The month with the most cloud cover is February (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 42).
Average visibility in April
Grand Isle, ME
- Average visibility in April: 4mi
The months with the highest visibility are May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March, April and December (4mi).
