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
As Winthrop Harbor transitions into April, the average high-temperature shows a change, moving from a cold 41.2°F (5.1°C) in March to a fresh 50.7°F (10.4°C). Winthrop Harbor, during April, witnesses an average low-temperature of 38.8°F (3.8°C).Humidity
The average relative humidity in April in Winthrop Harbor is 77%.Rainfall
In Winthrop Harbor, during April, the rain falls for 14.3 days and regularly aggregates up to 2.44" (62mm) of precipitation. Throughout the year, there are 142.5 rainfall days, and 21.5" (546mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. April is the last month it regularly snows in Winthrop Harbor. During 2.4 snowfall days, in April, Winthrop Harbor aggregates 0.98" (25mm) of snow. In Winthrop Harbor, during the entire year, snow falls for 45.5 days and aggregates up to 9.37" (238mm) of snow.Daylight
The average length of the day in April in Winthrop Harbor is 13h and 25min.On the first day of April in Winthrop Harbor, sunrise is at 6:32 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 7:50 pm CDT.
Sunshine
In Winthrop Harbor, the average sunshine in April 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 medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index, 3 during April, leads to the following recommendations:
Exercise prevention - Precautions against solar damage are endorsed. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Consider carefully! The reflective quality of snow 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
What is the average April temperature in Winthrop Harbor?
What is the average humidity in April in Winthrop Harbor?
How much does it rain in Winthrop Harbor in April?
What is the last month it snows in Winthrop Harbor?
What is the average length of the day in April in Winthrop Harbor?
When are sunrise and sunset in April in Winthrop Harbor?
How long on average sun shines in April in Winthrop Harbor?
What is the UV index intensity in April in Winthrop Harbor?
Average temperature in April
Winthrop Harbor, IL
- Average high temperature in April: 50.7°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in April: 38.8°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in April
Winthrop Harbor, IL
- Average pressure in April: 29.96"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Winthrop Harbor, IL
- Average wind speed in April: 10.9mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in April
Winthrop Harbor, IL
- Average humidity in April: 77%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in April
Winthrop Harbor, IL
- Average rainfall in April: 2.44"
The wettest months (with the highest rainfall) are June and August (2.68").
The driest month (with the least rainfall) is December (0.91").
Average rainfall days in April
Winthrop Harbor, IL
- Average rainfall days in April: 14.3 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is February (5.2 days).
Average snowfall in April
Winthrop Harbor, IL
- Average snowfall in April: 0.98"
The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Winthrop Harbor, IL
- Average snowfall days in April: 2.4 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Winthrop Harbor, IL
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in April: 7h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in April
Winthrop Harbor, IL
- Average sunshine days in April: 12.2 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in April
Winthrop Harbor, IL
- Average UV index in April: 3
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in April
Winthrop Harbor, IL
- Average cloud cover in April: 49
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in April
Winthrop Harbor, IL
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Winthrop Harbor, Illinois, USA
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