April weather forecast
Flossmoor, IL

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Weather in April

April in Flossmoor, Illinois, is a moderate spring month, with temperature in the range of an average low of 41.7°F (5.4°C) and an average high of 56.7°F (13.7°C).

Temperature

April brings a rise in Flossmoor's average high-temperature, moving from a frosty 45.5°F (7.5°C) in March to a moderate 56.7°F (13.7°C). An average nighttime temperature of 41.7°F (5.4°C) is noted in Flossmoor during the month of April.

Humidity

In April, the average relative humidity is 75%.

Rainfall

In Flossmoor, in April, it is raining for 16.8 days, with typically 3.43" (87mm) of accumulated precipitation. Throughout the year, in Flossmoor, there are 155.6 rainfall days, and 31.3" (795mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall in Flossmoor. April is the last month it regularly snows in Flossmoor. During 1.9 snowfall days, in April, Flossmoor aggregates 1.97" (50mm) of snow. In Flossmoor, during the entire year, snow falls for 44.6 days and aggregates up to 16.46" (418mm) of snow.

Daylight

The average length of the day in April in Flossmoor is 13h and 22min.
On the first day of April, sunrise is at 6:32 am and sunset at 7:16 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 7:47 pm CDT.

Sunshine

In April, the average sunshine is 7.6h.

UV index

The average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: A daily maximum UV index of 3 in April translates into the following instructions:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
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Frequently asked questions

What are the temperatures in Flossmoor in April?

In April, the average high-temperature and low-temperature in Flossmoor are 56.7°F (13.7°C) and 41.7°F (5.4°C) respectively.

What is the average humidity in April in Flossmoor?

In April, the average relative humidity in Flossmoor is 75%.

How many days does it rain in April in Flossmoor?

In Flossmoor, Illinois, in April, it is raining for 16.8 days, with typically 3.43" (87mm) of accumulated precipitation.

What is the last month it snows in Flossmoor?

April is the last month it regularly snows in Flossmoor. During 1.9 snowfall days, in April, Flossmoor aggregates 1.97" (50mm) of snow.

How many hours of daylight does Flossmoor have in April?

The average day length in April in Flossmoor, Illinois, is 13h and 22min.

When is the sunrise / sunset in April in Flossmoor?

In April, on the first day of the month, sunrise is at 6:32 am and sunset at 7:16 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 7:47 pm CDT.

How long on average sun shines in April in Flossmoor?

In April, the average sunshine duration in Flossmoor, Illinois, is 7.6h.

What is the UV index intensity in April in Flossmoor?

In Flossmoor, the average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a medium health risk 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
Flossmoor, IL

Average temperature in April - Flossmoor, IL
  • Average high temperature in April: 56.7°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (29.7°F).

  • Average low temperature in April: 41.7°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

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Average pressure in April
Flossmoor, IL

Average pressure in April - Flossmoor, IL
  • Average pressure in April: 29.95"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in April
Flossmoor, IL

Average wind speed in April - Flossmoor, IL
  • Average wind speed in April: 9.8mph

The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

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Average humidity in April
Flossmoor, IL

Average humidity in April - Flossmoor, IL
  • Average humidity in April: 75%

The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in April
Flossmoor, IL

Average rainfall in April - Flossmoor, IL
  • Average rainfall in April: 3.43"

The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is December (1.54").

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Average rainfall days in April
Flossmoor, IL

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

The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is February (6.1 days).

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Average snowfall in April
Flossmoor, IL

Average snowfall in April - Flossmoor, IL
  • Average snowfall in April: 1.97"

The month with the highest snowfall is January (4.53").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in April
Flossmoor, IL

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

The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in April / Average sunshine in April - Flossmoor, IL
  • Average daylight in April: 13h and 2min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in April: 7h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

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Average sunshine days in April
Flossmoor, IL

Average sunshine days in April - Flossmoor, IL
  • Average sunshine days in April: 10.2 days

The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is April (10.2 days).

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Average UV index in April
Flossmoor, IL

Average UV index in April - Flossmoor, IL
  • Average UV index in April: 3

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

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Average cloud cover in April
Flossmoor, IL

Average cloud cover in April - Flossmoor, 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 August (Cloud cover 30).

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Average visibility in April
Flossmoor, IL

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

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

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Flossmoor, Illinois, USA

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