April weather forecast
Iowa City, IA

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Golden and brown trees in a scenic, neat lawn near the mighty grandeur of the Old Capitol building, Iowa City
Golden and brown trees in a scenic, neat lawn near the mighty grandeur of the Old Capitol building, Iowa City

Weather in April

In April, the transition from winter to spring becomes more pronounced. An increase in temperature, wind speed, and daylight hours collectively usher in a more hospitable weather pattern. Rainfall becomes a dominant feature, replacing snowfall, and nurturing the burgeoning plant life. Visitors and residents alike can now bask in longer daytime periods and enjoy the blooming flora around the city.

Temperature

As April arrives in Iowa City, a rise in the average high-temperature is observed, moving from a chilly 46.6°F (8.1°C) in March to a moderate 58.6°F (14.8°C). An average low-temperature of 42.3°F (5.7°C) is common during the nights of April.

Humidity

The average relative humidity in April is 74%.

Rainfall

In Iowa City, Iowa, in April, it is raining for 15.3 days, with typically 3.19" (81mm) of accumulated precipitation. Throughout the year, in Iowa City, there are 140.4 rainfall days, and 29.57" (751mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall. April is the last month it regularly snows. During 1.3 snowfall days, in April, Iowa City aggregates 0.67" (17mm) of snow. In Iowa City, during the entire year, snow falls for 37.7 days and aggregates up to 16.42" (417mm) of snow.

Daylight

In April, the average length of the day in Iowa City is 13h and 22min.
On the first day of the month, sunrise is at 6:47 am and sunset at 7:31 pm. On the last day of April, sunrise is at 6:02 am and sunset at 8:03 pm CDT.

Sunshine

The average sunshine in April in Iowa City is 7.8h.

UV index

In Iowa City, Iowa, 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 the ordinary person.
Note: The maximum daily UV index of 4 in April interprets into the following recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. To avoid the Sun's strongest rays, limit exposure around the mid-day period. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
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Frequently asked questions

What is the temperature in April in Iowa City?

The high-temperature, in April, in Iowa City, records 58.6°F (14.8°C), while the low-temperature is 42.3°F (5.7°C).

What is the average humidity in April in Iowa City?

In Iowa City, the average relative humidity in April is 74%.

How much does it rain in Iowa City in April?

In April, in Iowa City, Iowa, the rain falls for 15.3 days. Throughout April, 3.19" (81mm) of precipitation is accumulated.

What is the last month it snows in Iowa City?

April is the last month it regularly snows in Iowa City. During 1.3 snowfall days, in April, Iowa City aggregates 0.67" (17mm) of snow.

What is the average length of the day in April in Iowa City?

The average day length in April in Iowa City is 13h and 22min.

When are sunrise and sunset in April in Iowa City?

In April, on the first day of the month, sunrise is at 6:47 am and sunset at 7:31 pm. On the last day of the month, in Iowa City, sunrise is at 6:02 am and sunset at 8:03 pm CDT.

How many hours of sunshine does Iowa City have in April?

In Iowa City, Iowa, the average sunshine duration in April is 7.8h.

What is the UV index intensity in April in Iowa City?

In April, the average daily maximum UV index in Iowa City is 4. A UV Index reading of 3 to 5 represents 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
Iowa City, IA

Average temperature in April - Iowa City, IA
  • Average high temperature in April: 58.6°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (27.3°F).

  • Average low temperature in April: 42.3°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).

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Average pressure in April
Iowa City, IA

Average pressure in April - Iowa City, IA
  • Average pressure in April: 29.93"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in April
Iowa City, IA

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

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

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Average humidity in April
Iowa City, IA

Average humidity in April - Iowa City, IA
  • Average humidity in April: 74%

The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in April
Iowa City, IA

Average rainfall in April - Iowa City, IA
  • Average rainfall in April: 3.19"

The wettest month (with the highest rainfall) is May (4.69").
The driest months (with the least rainfall) are January and February (1.34").

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Average rainfall days in April
Iowa City, IA

Average rainfall days in April - Iowa City, IA
  • Average rainfall days in April: 15.3 days

The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is February (5 days).

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Average snowfall in April
Iowa City, IA

Average snowfall in April - Iowa City, IA
  • Average snowfall in April: 0.67"

The month with the highest snowfall is January (5.28").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in April
Iowa City, IA

Average snowfall days in April - Iowa City, IA
  • Average snowfall days in April: 1.3 days

The month with the highest number of snowfall days is January (10.9 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
Iowa City, IA

Average daylight in April / Average sunshine in April - Iowa City, 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 5min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

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Average sunshine days in April
Iowa City, IA

Average sunshine days in April - Iowa City, IA
  • Average sunshine days in April: 12.8 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10 days).

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Average UV index in April
Iowa City, IA

Average UV index in April - Iowa City, IA
  • Average UV index in April: 4

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

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Average cloud cover in April
Iowa City, IA

Average cloud cover in April - Iowa City, IA
  • Average cloud cover in April: 47

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in April
Iowa City, IA

Average visibility in April - Iowa City, IA
  • Average visibility in April: 6mi

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

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Iowa City, Iowa, USA

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