April weather forecast
Ontario, WI

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Weather in April

April is a fresh spring month in Ontario, Wisconsin, with an average temperature ranging between max 53.1°F (11.7°C) and min 36°F (2.2°C).

Temperature

Ontario experiences a temperature shift with the start of April, with average high-temperatures moving from a wintry 40.5°F (4.7°C) in March to a fresh 53.1°F (11.7°C). Throughout April, Ontario witnesses a nighttime temperature average of 36°F (2.2°C).

Humidity

April is the least humid month in Ontario, Wisconsin, with an average relative humidity of 77%.

Rainfall

In April, the rain falls for 14.3 days. Throughout April, 2.83" (72mm) of precipitation is accumulated. In Ontario, during the entire year, the rain falls for 131.7 days and collects up to 27.83" (707mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Ontario, during April, snow falls for 2.8 days and regularly aggregates up to 1.81" (46mm) of snow. Throughout the year, there are 50.2 snowfall days, and 21.69" (551mm) of snow is accumulated.

Daylight

The average length of the day in April in Ontario is 13h and 28min.
On the first day of the month, sunrise is at 6:42 am and sunset at 7:29 pm. On the last day of April, sunrise is at 5:54 am and sunset at 8:04 pm CDT.

Sunshine

The average sunshine in April in Ontario is 7.1h.

UV index

The average daily maximum UV index in April in Ontario is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The daily maximum UV index of 3 in April interprets into the following advice:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
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Frequently asked questions

What is the usual temperature for Ontario in April?

An average high-temperature, in April, in Ontario, is 53.1°F (11.7°C) and the average low-temperature is 36°F (2.2°C).

What is the least humid month in Ontario?

The least humid month is April, with an average relative humidity of 77%.

What is the average humidity in April in Ontario?

In Ontario, Wisconsin, the average relative humidity in April is 77%.

How much does it rain in Ontario in April?

In Ontario, in April, it is raining for 14.3 days, with typically 2.83" (72mm) of accumulated precipitation.

How many days does it snow in April in Ontario?

In Ontario, Wisconsin, during April, snow falls for 2.8 days and regularly aggregates up to 1.81" (46mm) of snow.

How many hours of daylight does Ontario have in April?

The average day length in April in Ontario is 13h and 28min.

What time are sunrise and sunset in April in Ontario?

In April, on the first day of the month, sunrise is at 6:42 am and sunset at 7:29 pm. On the last day of the month, in Ontario, sunrise is at 5:54 am and sunset at 8:04 pm CDT.

How many hours of sunshine does Ontario have in April?

The average sunshine duration in April in Ontario, Wisconsin, is 7.1h.

What is the UV index intensity in April in Ontario?

In Ontario, Wisconsin, the average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes 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
Ontario, WI

Average temperature in April - Ontario, WI
  • Average high temperature in April: 53.1°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (22.1°F).

  • Average low temperature in April: 36°F

The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (9.3°F).

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Average pressure in April
Ontario, WI

Average pressure in April - Ontario, WI
  • Average pressure in April: 29.95"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in April
Ontario, WI

Average wind speed in April - Ontario, WI
  • Average wind speed in April: 9.3mph

The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

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Average humidity in April
Ontario, WI

Average humidity in April - Ontario, WI
  • Average humidity in April: 77%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is April (77%).

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Average rainfall in April
Ontario, WI

Average rainfall in April - Ontario, WI
  • Average rainfall in April: 2.83"

The wettest month (with the highest rainfall) is June (4.17").
The driest month (with the least rainfall) is January (1.1").

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Average rainfall days in April
Ontario, WI

Average rainfall days in April - Ontario, WI
  • Average rainfall days in April: 14.3 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (3.5 days).

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Average snowfall in April
Ontario, WI

Average snowfall in April - Ontario, WI
  • Average snowfall in April: 1.81"

The month with the highest snowfall is February (5.87").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in April
Ontario, WI

Average snowfall days in April - Ontario, WI
  • Average snowfall days in April: 2.8 days

The month with the highest number of snowfall days is January (12.3 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
Ontario, WI

Average daylight in April / Average sunshine in April - Ontario, WI
  • Average daylight in April: 13h and 3min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in April: 7h and 1min

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

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Average sunshine days in April
Ontario, WI

Average sunshine days in April - Ontario, WI
  • Average sunshine days in April: 12.5 days

The month with the most sunshine days is December (17.5 days).
The month with the least sunshine days is June (10.4 days).

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Average UV index in April
Ontario, WI

Average UV index in April - Ontario, WI
  • Average UV index in April: 3

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in April
Ontario, WI

Average cloud cover in April - Ontario, WI
  • Average cloud cover in April: 52

The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in April
Ontario, WI

Average visibility in April - Ontario, WI
  • Average visibility in April: 6mi

The months with the highest visibility are April, May, June, October and November (6mi).
The month with the lowest visibility is January (4mi).

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Ontario, Wisconsin, USA

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