April weather forecast
Hanover, IL

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Weather in April

April is a mild spring month in Hanover, Illinois, with an average temperature ranging between min 39.7°F (4.3°C) and max 56.1°F (13.4°C).

Temperature

The shift into April is marked by a rise in the average high-temperature, moving from March's frosty 44.2°F (6.8°C) to a moderate 56.1°F (13.4°C). Throughout the month of April, the nighttime temperature dips to an average of 39.7°F (4.3°C).

Humidity

In Hanover, the average relative humidity in April is 76%.

Rainfall

In Hanover, Illinois, in April, it is raining for 16.3 days, with typically 3.39" (86mm) of accumulated precipitation. In Hanover, during the entire year, the rain falls for 145.6 days and collects up to 28.9" (734mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. April is the last month it regularly snows in Hanover. During 1.6 snowfall days, in April, Hanover aggregates 0.67" (17mm) of snow. Throughout the year, there are 40.1 snowfall days, and 16.61" (422mm) of snow is accumulated.

Daylight

The average length of the day in April in Hanover, Illinois, is 13h and 24min.
On the first day of April, sunrise is at 6:42 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 7:59 pm CDT.

Sunshine

The average sunshine in April is 7.5h.

UV index

The average daily maximum UV index in April is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum daily UV index of 4 during April morphs into the following directions:
Exercise prevention - Warding off sunburn is urged. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Hanover in April?

The high-temperature, in April, in Hanover, is 56.1°F (13.4°C), while the low-temperature averages to 39.7°F (4.3°C).

What is the average humidity in April in Hanover?

In April, the average relative humidity in Hanover is 76%.

How much does it rain in Hanover in April?

In Hanover, in April, during 16.3 rainfall days, 3.39" (86mm) of precipitation is typically accumulated.

What is the last month it snows in Hanover?

April is the last month it regularly snows. During 1.6 snowfall days, in April, Hanover aggregates 0.67" (17mm) of snow.

How many hours of daylight does Hanover have in April?

In April, the average day length is 13h and 24min.

When is the sunrise / sunset in April in Hanover?

In April, on the first day of the month, sunrise is at 6:42 am and sunset at 7:27 pm. On the last day of the month, in Hanover, sunrise is at 5:56 am and sunset at 7:59 pm CDT.

How many hours of sunshine does Hanover have in April?

The average sunshine duration in April is 7.5h.

How high is the UV index in April in Hanover?

In April, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Hanover, IL

Average temperature in April - Hanover, IL
  • Average high temperature in April: 56.1°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (25.7°F).

  • Average low temperature in April: 39.7°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (13.1°F).

Average pressure in April
Hanover, IL

Average pressure in April - Hanover, IL
  • Average pressure in April: 29.94"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in April
Hanover, IL

Average wind speed in April - Hanover, IL
  • Average wind speed in April: 10.3mph

The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

Average humidity in April
Hanover, IL

Average humidity in April - Hanover, IL
  • Average humidity in April: 76%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (75%).

Average rainfall in April
Hanover, IL

Average rainfall in April - Hanover, IL
  • Average rainfall in April: 3.39"

The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is January (1.22").

Average rainfall days in April
Hanover, IL

Average rainfall days in April - Hanover, IL
  • Average rainfall days in April: 16.3 days

The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is February (4.5 days).

Average snowfall in April
Hanover, IL

Average snowfall in April - Hanover, IL
  • Average snowfall in April: 0.67"

The month with the highest snowfall is January (4.61").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in April
Hanover, IL

Average snowfall days in April - Hanover, IL
  • Average snowfall days in April: 1.6 days

The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in April /
Average sunshine in April
Hanover, IL

Average daylight in April / Average sunshine in April - Hanover, 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 12min).

  • Average sunshine in April: 7h and 3min

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in April
Hanover, IL

Average sunshine days in April - Hanover, IL
  • Average sunshine days in April: 10.6 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (9.5 days).

Average UV index in April
Hanover, IL

Average UV index in April - Hanover, IL
  • Average UV index in April: 4

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in April
Hanover, IL

Average cloud cover in April - Hanover, IL
  • Average cloud cover in April: 49

The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are August and September (Cloud cover 32).

Average visibility in April
Hanover, IL

Average visibility in April - Hanover, IL
  • Average visibility in April: 6mi

The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).

Hanover, Illinois, USA

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