April weather forecast
Monticello, IA

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Weather in April

April is a refreshing spring month in Monticello, Iowa, with temperature in the range of an average low of 39.9°F (4.4°C) and an average high of 56.1°F (13.4°C).

Temperature

The start of April brings a rise in the average high-temperature, moving from a frosty 44.2°F (6.8°C) in March to a moderate 56.1°F (13.4°C). Throughout the month of April, the nighttime temperature dips to an average of 39.9°F (4.4°C).

Humidity

The average relative humidity in April is 76%.

Rainfall

In Monticello, during April, the rain falls for 16 days and regularly aggregates up to 3.15" (80mm) of precipitation. In Monticello, during the entire year, the rain falls for 142.5 days and collects up to 28.27" (718mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall in Monticello, Iowa. April is the last month it regularly snows in Monticello, Iowa. During 1.6 snowfall days, in April, Monticello aggregates 0.63" (16mm) of snow. Throughout the year, there are 43.2 snowfall days, and 17.17" (436mm) of snow is accumulated.

Daylight

The average length of the day in April is 13h and 24min.
On the first day of April, sunrise is at 6:45 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 8:03 pm CDT.

Sunshine

In Monticello, the average sunshine in April is 7.5h.

UV index

The average daily maximum UV index in April in Monticello is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 4 in April interprets into the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
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Frequently asked questions

What is the usual temperature for Monticello in April?

April temperatures vary between a high-temperature of 56.1°F (13.4°C) and a low-temperature of 39.9°F (4.4°C).

What is the average humidity in April in Monticello?

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

How many days does it rain in April in Monticello?

In Monticello, in April, during 16 rainfall days, 3.15" (80mm) of precipitation is typically accumulated.

What is the last month it snows in Monticello?

April is the last month it regularly snows in Monticello, Iowa. During 1.6 snowfall days, in April, Monticello aggregates 0.63" (16mm) of snow.

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

The average day length in April in Monticello, Iowa, is 13h and 24min.

What time are sunrise and sunset in April in Monticello?

On the first day of April in Monticello, Iowa, sunrise is at 6:45 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 8:03 pm CDT.

How many hours of sunshine does Monticello have in April?

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

What is the UV index intensity in April in Monticello?

The average daily maximum UV index in April in Monticello is 4. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to 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
Monticello, IA

Average temperature in April - Monticello, IA
  • Average high temperature in April: 56.1°F

The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (25.2°F).

  • Average low temperature in April: 39.9°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).

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Average pressure in April
Monticello, IA

Average pressure in April - Monticello, IA
  • Average pressure in April: 29.93"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).

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Average wind speed in April
Monticello, IA

Average wind speed in April - Monticello, IA
  • Average wind speed in April: 10.7mph

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).

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Average humidity in April
Monticello, IA

Average humidity in April - Monticello, IA
  • Average humidity in April: 76%

The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in April
Monticello, IA

Average rainfall in April - Monticello, IA
  • Average rainfall in April: 3.15"

The wettest month (with the highest rainfall) is May (4.25").
The driest months (with the least rainfall) are January and February (1.26").

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Average rainfall days in April
Monticello, IA

Average rainfall days in April - Monticello, IA
  • Average rainfall days in April: 16 days

The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (5.2 days).

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Average snowfall in April
Monticello, IA

Average snowfall in April - Monticello, IA
  • Average snowfall in April: 0.63"

The month with the highest snowfall is January (5.04").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in April
Monticello, IA

Average snowfall days in April - Monticello, IA
  • Average snowfall days in April: 1.6 days

The month with the highest number of snowfall days is January (12.1 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
Monticello, IA

Average daylight in April / Average sunshine in April - Monticello, IA
  • 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 months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

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Average sunshine days in April
Monticello, IA

Average sunshine days in April - Monticello, IA
  • Average sunshine days in April: 11.1 days

The month with the most sunshine days is September (17 days).
The month with the least sunshine days is June (10.5 days).

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Average UV index in April
Monticello, IA

Average UV index in April - Monticello, IA
  • 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
Monticello, IA

Average cloud cover in April - Monticello, IA
  • Average cloud cover in April: 49

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in April
Monticello, IA

Average visibility in April - Monticello, IA
  • 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).

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Monticello, Iowa, USA

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