April weather forecastCopper Harbor, MI
April
Weather in April
April weather in Copper Harbor marks a clear shift away from the cold clasp of winter. As the temperatures rise to a high of 37°F (2.8°C), the snow cover starts melting away, and interestingly, rainfall inches rise to 1.93" (49mm). Weather during April, warmer than March, marks a notable move towards spring. With significant increase in cloud visibility and daylight hours, this month sets the stage for the warmer months of May and June.Temperature
The shift from March to April sees a slight increase in the average high-temperature, transitioning from a freezing cold 30.6°F (-0.8°C) to a wintry 37°F (2.8°C). During the April nights, Copper Harbor's temperature maintains an average close to the daytime highs, settling at a subzero cold 31.8°F (-0.1°C).Humidity
In April, the average relative humidity in Copper Harbor is 81%.Rainfall
In April, in Copper Harbor, the rain falls for 9.4 days. Throughout April, 1.93" (49mm) of precipitation is accumulated. Throughout the year, in Copper Harbor, there are 116.2 rainfall days, and 23.46" (596mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Copper Harbor, in April, snow falls for 6.2 days, with typically accumulated 2.36" (60mm) of snow. In Copper Harbor, during the entire year, snow falls for 80 days and aggregates up to 19.29" (490mm) of snow.Daylight
In Copper Harbor, the average length of the day in April is 13h and 40min.On the first day of April in Copper Harbor, sunrise is at 7:28 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 9:02 pm EDT.
Sunshine
The average sunshine in April is 6.4h.UV index
In Copper Harbor, the average daily maximum UV index in April is 2. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: In April, the UV index of 2 transforms into the following advice:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Boost your sun resistance with garments that are densely woven yet spacious. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Copper Harbor, MI
- Average high temperature in April: 37°F
The warmest month (with the highest average high temperature) is August (62.6°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in April: 31.8°F
The month with the highest average low temperature is August (57.6°F).
The coldest month (with the lowest average low temperature) is February (17.2°F).
Average pressure in April
Copper Harbor, MI
- Average pressure in April: 29.99"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The months with the lowest atmospheric pressure are June and July (29.92"Hg).
Average wind speed in April
Copper Harbor, MI
- Average wind speed in April: 13.7mph
The windiest month (with the highest average wind speed) is January (17.8mph).
The calmest month (with the lowest average wind speed) is July (10mph).
Average humidity in April
Copper Harbor, MI
- Average humidity in April: 81%
The months with the highest relative humidity are January and July (85%).
The months with the lowest relative humidity are October and November (78%).
Average rainfall in April
Copper Harbor, MI
- Average rainfall in April: 1.93"
The wettest month (with the highest rainfall) is August (2.48").
The driest month (with the least rainfall) is March (1.46").
Average rainfall days in April
Copper Harbor, MI
- Average rainfall days in April: 9.4 days
The month with the highest number of rainy days is October (15.7 days).
The month with the least rainy days is February (1.4 days).
Average snowfall in April
Copper Harbor, MI
- Average snowfall in April: 2.36"
The month with the highest snowfall is December (3.86").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Copper Harbor, MI
- Average snowfall days in April: 6.2 days
The month with the highest number of snowfall days is January (17.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Copper Harbor, MI
- 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: 6h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 1h and 12min).
Average sunshine days in April
Copper Harbor, MI
- Average sunshine days in April: 13.8 days
The months with the most sunshine days are July and August (16.7 days).
The month with the least sunshine days is January (3.8 days).
Average UV index in April
Copper Harbor, MI
- Average UV index in April: 2
The months with the highest UV index are July and August (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
Copper Harbor, MI
- Average cloud cover in April: 54
The month with the most cloud cover is January (Cloud cover 89).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in April
Copper Harbor, MI
- Average visibility in April: 6mi
The months with the highest visibility are March, April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and December (4mi).
