April weather forecast
Bartlett, IL

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Weather in April

April is a moderate spring month in Bartlett, Illinois, with an average temperature varying between 55.8°F (13.2°C) and 39.9°F (4.4°C).

Temperature

As Bartlett, Illinois, transitions into April, the average high-temperature is observed to rise from a chilly 44.2°F (6.8°C) in March to a mild 55.8°F (13.2°C). During April, the nighttime temperature in Bartlett averages to a wintry 39.9°F (4.4°C).

Humidity

The average relative humidity in April in Bartlett is 75%.

Rainfall

In Bartlett, during April, the rain falls for 15.1 days and regularly aggregates up to 2.64" (67mm) of precipitation. Throughout the year, in Bartlett, there are 141.5 rainfall days, and 22.76" (578mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Bartlett are January through May, October through December. In April, in Bartlett, it is snowing for 2.2 days. Throughout April, 2.05" (52mm) of snow is accumulated. In Bartlett, during the entire year, snow falls for 46.4 days and aggregates up to 13.03" (331mm) of snow.

Daylight

The average length of the day in April is 13h and 23min.
On the first day of the month, sunrise is at 6:33 am and sunset at 7:18 pm. On the last day of April, sunrise is at 5:48 am and sunset at 7:50 pm CDT.

Sunshine

The average sunshine in April is 7.3h.

UV index

In April, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 3 in April converts into the following recommendations:
Exercise prevention - Warding off sunburn is urged. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
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Frequently asked questions

What is the average April temperature in Bartlett?

Bartlett in April has an average high-temperature of 55.8°F (13.2°C) and an average low-temperature of 39.9°F (4.4°C).

What is the average humidity in April in Bartlett?

The average relative humidity in April is 75%.

How much does it rain in Bartlett in April?

In Bartlett, Illinois, in April, it is raining for 15.1 days, with typically 2.64" (67mm) of accumulated precipitation.

How much does it snow in Bartlett in April?

In Bartlett, during April, snow falls for 2.2 days and regularly aggregates up to 2.05" (52mm) of snow.

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

In Bartlett, the average day length in April is 13h and 23min.

When is the sunrise / sunset in April in Bartlett?

On the first day of April, sunrise is at 6:33 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 7:50 pm CDT.

How long on average sun shines in April in Bartlett?

In Bartlett, the average sunshine duration in April is 7.3h.

What is the UV index reading in April in Bartlett?

The average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe 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
Bartlett, IL

Average temperature in April - Bartlett, IL
  • Average high temperature in April: 55.8°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 (27.7°F).

  • Average low temperature in April: 39.9°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).

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Average pressure in April
Bartlett, IL

Average pressure in April - Bartlett, 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
Bartlett, IL

Average wind speed in April - Bartlett, IL
  • Average wind speed in April: 9.7mph

The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in April
Bartlett, IL

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

The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in April
Bartlett, IL

Average rainfall in April - Bartlett, IL
  • Average rainfall in April: 2.64"

The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is December (1.02").

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Average rainfall days in April
Bartlett, IL

Average rainfall days in April - Bartlett, IL
  • Average rainfall days in April: 15.1 days

The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is February (4.8 days).

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Average snowfall in April
Bartlett, IL

Average snowfall in April - Bartlett, IL
  • Average snowfall in April: 2.05"

The month with the highest snowfall is January (3.39").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in April
Bartlett, IL

Average snowfall days in April - Bartlett, IL
  • Average snowfall days in April: 2.2 days

The month with the highest number of snowfall days is January (12.3 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
Bartlett, IL

Average daylight in April / Average sunshine in April - Bartlett, 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 2min

The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

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Average sunshine days in April
Bartlett, IL

Average sunshine days in April - Bartlett, IL
  • Average sunshine days in April: 11.3 days

The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is July (10.9 days).

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Average UV index in April
Bartlett, IL

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

The months with the highest UV index are June, July and August (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
Bartlett, IL

Average cloud cover in April - Bartlett, IL
  • Average cloud cover in April: 51

The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July, August and September (Cloud cover 33).

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Average visibility in April
Bartlett, IL

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

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

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Bartlett, Illinois, USA

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