April weather forecast
Knierim, IA

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Weather in April

April is a refreshing spring month in Knierim, Iowa, with an average temperature fluctuating between 41.4°F (5.2°C) and 57.7°F (14.3°C).

Temperature

In Knierim, stepping into April brings a temperature increase, moving up from March's chilly 44.2°F (6.8°C) to a refreshing 57.7°F (14.3°C). Knierim encounters an average low-temperature of 41.4°F (5.2°C) during April nights.

Humidity

The months with the lowest humidity are April and October, with an average relative humidity of 68%.

Rainfall

In Knierim, in April, it is raining for 9.8 days, with typically 0.83" (21mm) of accumulated precipitation. In Knierim, during the entire year, the rain falls for 84.6 days and collects up to 7.91" (201mm) of precipitation.

Snowfall

Months with snowfall in Knierim are January through April, October through December. April is the last month it regularly snows in Knierim. During 1.1 snowfall days, in April, Knierim aggregates 0.16" (4mm) of snow. Throughout the year, in Knierim, there are 29.4 snowfall days, and 3.62" (92mm) of snow is accumulated.

Daylight

In Knierim, the average length of the day in April is 13h and 25min.
On the first day of the month, sunrise is at 6:58 am and sunset at 7:44 pm. On the last day of April, sunrise is at 6:12 am and sunset at 8:17 pm CDT.

Sunshine

In April, the average sunshine is 7.8h.

UV index

In Knierim, the average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index of 3 during April translates into these guidelines:
Take precautions - Protection against sunburn is recommended. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What are April temperatures in Knierim?

The high-temperature, in April, in Knierim, records 57.7°F (14.3°C), while the low-temperature is 41.4°F (5.2°C).

What is the least humid month in Knierim?

The months with the lowest humidity in Knierim are April and October, with an average relative humidity of 68%.

What is the average humidity in April in Knierim?

In April, the average relative humidity in Knierim, Iowa, is 68%.

How much does it rain in Knierim in April?

In Knierim, in April, during 9.8 rainfall days, 0.83" (21mm) of precipitation is typically accumulated.

What is the last month it snows in Knierim?

April is the last month it regularly snows. During 1.1 snowfall days, in April, Knierim aggregates 0.16" (4mm) of snow.

How many hours of daylight does Knierim have in April?

In April, the average day length is 13h and 25min.

When is the sunrise / sunset in April in Knierim?

In April, on the first day of the month, sunrise is at 6:58 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 8:17 pm CDT.

How long on average sun shines in April in Knierim?

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

What is the UV index reading in April in Knierim?

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

Average temperature in April - Knierim, IA
  • Average high temperature in April: 57.7°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (25°F).

  • Average low temperature in April: 41.4°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).

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Average pressure in April
Knierim, IA

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in April
Knierim, IA

Average wind speed in April - Knierim, IA
  • Average wind speed in April: 11.1mph

The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).

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Average humidity in April
Knierim, IA

Average humidity in April - Knierim, IA
  • Average humidity in April: 68%

The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are April and October (68%).

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Average rainfall in April
Knierim, IA

Average rainfall in April - Knierim, IA
  • Average rainfall in April: 0.83"

The wettest month (with the highest rainfall) is May (1.34").
The driest month (with the least rainfall) is January (0.24").

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Average rainfall days in April
Knierim, IA

Average rainfall days in April - Knierim, IA
  • Average rainfall days in April: 9.8 days

The month with the highest number of rainy days is June (12 days).
The month with the least rainy days is February (1.9 days).

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Average snowfall in April
Knierim, IA

Average snowfall in April - Knierim, IA
  • Average snowfall in April: 0.16"

The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in April
Knierim, IA

Average snowfall days in April - Knierim, IA
  • Average snowfall days in April: 1.1 days

The month with the highest number of snowfall days is February (7.9 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
Knierim, IA

Average daylight in April / Average sunshine in April - Knierim, 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 6min).

  • Average sunshine in April: 7h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days in April
Knierim, IA

Average sunshine days in April - Knierim, IA
  • Average sunshine days in April: 18 days

The month with the most sunshine days is December (24.3 days).
The month with the least sunshine days is June (15.5 days).

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Average UV index in April
Knierim, IA

Average UV index in April - Knierim, IA
  • Average UV index in April: 3

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

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Average cloud cover in April
Knierim, IA

Average cloud cover in April - Knierim, IA
  • Average cloud cover in April: 46

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and September (Cloud cover 31).

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Average visibility in April
Knierim, IA

Average visibility in April - Knierim, 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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Knierim, Iowa, USA

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