April weather forecast
Monticello, IA

Share

Weather in April

April is a refreshing spring month in Monticello, Iowa, with an average temperature fluctuating between 39.9°F (4.4°C) and 56.1°F (13.4°C).

Temperature

April's arrival sees a rise in the average high-temperature, jumping from March's chilly 44.2°F (6.8°C) to a refreshing 56.1°F (13.4°C). Monticello observes an average nighttime low-temperature of 39.9°F (4.4°C) during the month of April.

Humidity

In April, the average relative humidity is 76%.

Rainfall

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

Snowfall

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

Daylight

In April, the average length of the day 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

The average sunshine in April in Monticello is 7.5h.

UV index

The average daily maximum UV index in April in Monticello, Iowa, is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A typical high UV index of 4 in April suggests the following recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Updated: Aug 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in April?

In Monticello, 56.1°F (13.4°C) is the average high-temperature and 39.9°F (4.4°C) is the average low-temperature during April.

What is the average humidity in April?

The average relative humidity in April is 76%.

How much does it rain in April?

In April, the rain falls for 16 days. Throughout April, 3.15" (80mm) of precipitation is accumulated.

What is the last month it snows?

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

How many hours of daylight does Monticello have in April?

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

When are sunrise and sunset in April?

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.

How many hours of sunshine does Monticello have in April?

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 is 4. A UV Index of 3 to 5 symbolizes a medium health risk 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
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).

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

Monticello, Iowa, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location