April weather forecast
Galena, IL

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Bright brown and golden trees near a calm river, bridge, and the colorful town of Galena, Illinois,
Bright brown and golden trees near a calm river, bridge, and the colorful town of Galena, Illinois,

Weather in April

Coming out from the winter, April weather in Galena becomes increasingly warm and wet. Distinct from the cold and dry conditions of March, April receives a dramatic increase in rainfall, averaging 3.35" (85mm). This transformation to warmer weather aids in the blooming of flora and fauna. Moreover, the UV index presents a moderate increase signaling the rise in the sun's intensity. The transition towards more humid conditions is on the rise.

Temperature

Observing a rise in April, the average high-temperature in Galena goes from March's chilly 43.7°F (6.5°C) to a refreshing 56.1°F (13.4°C). In Galena, the average temperature during the nights of April drops to an icy 39°F (3.9°C).

Humidity

April and October, with an average relative humidity of 76%, are the least humid months in Galena.

Rainfall

In Galena, during April, the rain falls for 16.8 days and regularly aggregates up to 3.35" (85mm) of precipitation. Throughout the year, there are 153.1 rainfall days, and 30.75" (781mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Galena are January through April, October through December. April is the last month it regularly snows. During 1.9 snowfall days, in April, Galena aggregates 0.67" (17mm) of snow. In Galena, during the entire year, snow falls for 46.9 days and aggregates up to 17.52" (445mm) of snow.

Daylight

The average length of the day in April is 13h and 24min.
On the first day of the month, sunrise is at 6:42 am and sunset at 7:28 pm. On the last day of April, sunrise is at 5:56 am and sunset at 8:00 pm CDT.

Sunshine

In April, the average sunshine is 7.5h.

UV index

The average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: In April, a daily UV index of 4 turns into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
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Frequently asked questions

What is the usual temperature for Galena in April?

In April, in Galena, the average high-temperature is 56.1°F (13.4°C), and the average low-temperature is 39°F (3.9°C).

What is the least humid month in Galena?

The months with the lowest humidity in Galena are April and October, with an average relative humidity of 76%.

What is the average humidity in April in Galena?

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

How much does it rain in Galena in April?

In Galena, Illinois, in April, during 16.8 rainfall days, 3.35" (85mm) of precipitation is typically accumulated.

What is the last month it snows in Galena?

April is the last month it regularly snows. During 1.9 snowfall days, in April, Galena aggregates 0.67" (17mm) of snow.

What is the average length of the day in April in Galena?

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

What time are sunrise and sunset in April in Galena?

In April, on the first day of the month, sunrise is at 6:42 am and sunset at 7:28 pm. On the last day of the month, in Galena, sunrise is at 5:56 am and sunset at 8:00 pm CDT.

How long on average sun shines in April in Galena?

In Galena, Illinois, the average sunshine duration in April is 7.5h.

What is the UV index intensity in April in Galena?

The average daily maximum UV index in April is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
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
Galena, IL

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

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (25°F).

  • Average low temperature in April: 39°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).

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Average pressure in April
Galena, IL

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

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in April
Galena, IL

Average wind speed in April - Galena, IL
  • Average wind speed in April: 10.4mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

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Average humidity in April
Galena, IL

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

The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (76%).

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Average rainfall in April
Galena, IL

Average rainfall in April - Galena, IL
  • Average rainfall in April: 3.35"

The wettest month (with the highest rainfall) is June (4.29").
The driest month (with the least rainfall) is January (1.26").

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Average rainfall days in April
Galena, IL

Average rainfall days in April - Galena, IL
  • Average rainfall days in April: 16.8 days

The month with the highest number of rainy days is May (20 days).
The month with the least rainy days is February (4.8 days).

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Average snowfall in April
Galena, IL

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

The month with the highest snowfall is January (5.12").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in April
Galena, IL

Average snowfall days in April - Galena, IL
  • Average snowfall days in April: 1.9 days

The month with the highest number of snowfall days is January (13.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in April / Average sunshine in April - Galena, 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 3min

The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in April
Galena, IL

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

The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is June (7.9 days).

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Average UV index in April
Galena, IL

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

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

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Average cloud cover in April
Galena, IL

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

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is September (Cloud cover 32).

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Average visibility in April
Galena, IL

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

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

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Galena, Illinois, USA

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