April weather forecast
Onawa, IA

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Weather in April

April in Onawa, Iowa, is a mild spring month, with an average temperature varying between 59.4°F (15.2°C) and 42.1°F (5.6°C).

Temperature

As March transitions into April, a change in temperatures is observed, with average highs moving from a frosty 47.8°F (8.8°C) to a refreshing 59.4°F (15.2°C). In the month of April, Onawa witnesses a consistent average low-temperature of 42.1°F (5.6°C).

Humidity

The months with the lowest humidity in Onawa, Iowa, are April and October, with an average relative humidity of 66%.

Rainfall

In April, the rain falls for 13.4 days. Throughout April, 2.17" (55mm) of precipitation is accumulated. In Onawa, during the entire year, the rain falls for 117.6 days and collects up to 21.89" (556mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall in Onawa. April is the last month it regularly snows in Onawa. During 1.5 snowfall days, in April, Onawa aggregates 1.14" (29mm) of snow. Throughout the year, in Onawa, there are 32.9 snowfall days, and 11.69" (297mm) of snow is accumulated.

Daylight

The average length of the day in April is 13h and 23min.
On the first day of the month, sunrise is at 7:05 am and sunset at 7:50 pm. On the last day of April, in Onawa, sunrise is at 6:20 am and sunset at 8:22 pm CDT.

Sunshine

In Onawa, the average sunshine in April is 8.1h.

UV index

In April, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: A daily high UV index of 4 in April leads to these guidelines:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What is the temperature in April in Onawa?

In April, in Onawa, the average high-temperature is 59.4°F (15.2°C), and the average low-temperature is 42.1°F (5.6°C).

What are the least humid months in Onawa?

The months with the lowest humidity are April and October, with an average relative humidity of 66%.

What is the average humidity in April in Onawa?

In Onawa, Iowa, the average relative humidity in April is 66%.

How many days does it rain in April in Onawa?

In Onawa, Iowa, in April, during 13.4 rainfall days, 2.17" (55mm) of precipitation is typically accumulated.

What is the last month it snows in Onawa?

April is the last month it regularly snows in Onawa. During 1.5 snowfall days, in April, Onawa aggregates 1.14" (29mm) of snow.

How many hours of daylight does Onawa have in April?

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

When is the sunrise / sunset in April in Onawa?

In April, on the first day of the month, sunrise is at 7:05 am and sunset at 7:50 pm. On the last day of the month, in Onawa, sunrise is at 6:20 am and sunset at 8:22 pm CDT.

How many hours of sunshine does Onawa have in April?

In April, the average sunshine duration in Onawa is 8.1h.

What is the UV index intensity in April in Onawa?

In Onawa, the average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a moderate health threat 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
Onawa, IA

Average temperature in April - Onawa, IA
  • Average high temperature in April: 59.4°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (28°F).

  • Average low temperature in April: 42.1°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).

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Average pressure in April
Onawa, IA

Average pressure in April - Onawa, IA
  • Average pressure in April: 29.92"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

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Average wind speed in April
Onawa, IA

Average wind speed in April - Onawa, IA
  • Average wind speed in April: 10.9mph

The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is July (7.4mph).

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Average humidity in April
Onawa, IA

Average humidity in April - Onawa, IA
  • Average humidity in April: 66%

The month with the highest relative humidity is January (82%).
The months with the lowest relative humidity are April and October (66%).

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Average rainfall in April
Onawa, IA

Average rainfall in April - Onawa, IA
  • Average rainfall in April: 2.17"

The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is January (0.67").

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Average rainfall days in April
Onawa, IA

Average rainfall days in April - Onawa, IA
  • Average rainfall days in April: 13.4 days

The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is February (2.7 days).

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Average snowfall in April
Onawa, IA

Average snowfall in April - Onawa, IA
  • Average snowfall in April: 1.14"

The month with the highest snowfall is February (3.03").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in April
Onawa, IA

Average snowfall days in April - Onawa, IA
  • Average snowfall days in April: 1.5 days

The month with the highest number of snowfall days is January (8.9 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
Onawa, IA

Average daylight in April / Average sunshine in April - Onawa, 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: 8h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

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Average sunshine days in April
Onawa, IA

Average sunshine days in April - Onawa, IA
  • Average sunshine days in April: 14 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (12 days).

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Average UV index in April
Onawa, IA

Average UV index in April - Onawa, IA
  • Average UV index in April: 4

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

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Average cloud cover in April
Onawa, IA

Average cloud cover in April - Onawa, IA
  • Average cloud cover in April: 43

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 26).

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Average visibility in April
Onawa, IA

Average visibility in April - Onawa, IA
  • Average visibility in April: 6mi

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

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Onawa, Iowa, USA

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