May weather forecast
Port Washington, WI

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Weather in May

May, the last month of the spring in Port Washington, is a refreshing month, with an average temperature ranging between max 59.5°F (15.3°C) and min 46.8°F (8.2°C).

Temperature

The start of May brings a rise in the average high-temperature, moving from a chilly 48.6°F (9.2°C) in April to a refreshing 59.5°F (15.3°C). In the month of May, an average of 46.8°F (8.2°C) marks the low-temperature.

Humidity

The average relative humidity in May is 79%.

Rainfall

In Port Washington, during May, the rain falls for 15.8 days and regularly aggregates up to 2.76" (70mm) of precipitation. Throughout the year, in Port Washington, there are 134.9 rainfall days, and 23.94" (608mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall in Port Washington.

Daylight

The average length of the day in May in Port Washington, Wisconsin, is 14h and 43min.
On the first day of May in Port Washington, sunrise is at 5:43 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:13 am and sunset at 8:24 pm CDT.

Sunshine

The average sunshine in May in Port Washington is 8.7h.

UV index

In May, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.
Note: In May, the UV index of 4 transforms into the following advice:
Take necessary precautions - Defending against sun damage is advocated. Direct Sun exposure should be minimized especially during midday when radiation is most intense. To cut down UV radiation exposure by about half, sport a wide-brim hat. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

What are May temperatures in Port Washington?

An average high-temperature, in May, in Port Washington, is 59.5°F (15.3°C) and the average low-temperature is 46.8°F (8.2°C).

What is the average humidity in May in Port Washington?

In Port Washington, the average relative humidity in May is 79%.

How much does it rain in Port Washington in May?

In Port Washington, Wisconsin, in May, it is raining for 15.8 days, with typically 2.76" (70mm) of accumulated precipitation.

When it does not snow in Port Washington?

In Port Washington, Wisconsin, snow does not fall in May through September.

Does it snow in Port Washington in May?

In May, in Port Washington, it doesn't snow. April is the latest month when it typically snows.

How many hours of daylight does Port Washington have in May?

The average day length in May in Port Washington, Wisconsin, is 14h and 43min.

What time are sunrise and sunset in May in Port Washington?

On the first day of May in Port Washington, Wisconsin, sunrise is at 5:43 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:13 am and sunset at 8:24 pm CDT.

How many hours of sunshine does Port Washington have in May?

In Port Washington, Wisconsin, the average sunshine duration in May is 8.7h.

What is the UV index intensity in May in Port Washington?

In Port Washington, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Port Washington, WI

Average temperature in May - Port Washington, WI
  • Average high temperature in May: 59.5°F

The warmest month (with the highest average high temperature) is July (76.1°F).
The month with the lowest average high temperature is January (25.5°F).

  • Average low temperature in May: 46.8°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).

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Average pressure in May
Port Washington, WI

Average pressure in May - Port Washington, WI
  • Average pressure in May: 29.96"Hg

The months with the highest atmospheric pressure are January, February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in May
Port Washington, WI

Average wind speed in May - Port Washington, WI
  • Average wind speed in May: 9.2mph

The windiest month (with the highest average wind speed) is January (12.1mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).

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Average humidity in May
Port Washington, WI

Average humidity in May - Port Washington, WI
  • Average humidity in May: 79%

The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April, October and November (77%).

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Average rainfall in May
Port Washington, WI

Average rainfall in May - Port Washington, WI
  • Average rainfall in May: 2.76"

The wettest month (with the highest rainfall) is July (2.99").
The driest month (with the least rainfall) is February (0.98").

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Average rainfall days in May
Port Washington, WI

Average rainfall days in May - Port Washington, WI
  • Average rainfall days in May: 15.8 days

The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is February (3.8 days).

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Average snowfall in May
Port Washington, WI

Average snowfall in May - Port Washington, WI
  • Average snowfall in May: 0"

The month with the highest snowfall is January (3.43").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
Port Washington, WI

Average snowfall days in May - Port Washington, WI
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
Port Washington, WI

Average daylight in May / Average sunshine in May - Port Washington, WI
  • Average daylight in May: 14h and 4min

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 May: 8h and 4min

The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

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Average sunshine days in May
Port Washington, WI

Average sunshine days in May - Port Washington, WI
  • Average sunshine days in May: 12.9 days

The month with the most sunshine days is December (16.4 days).
The month with the least sunshine days is July (11.6 days).

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Average UV index in May
Port Washington, WI

Average UV index in May - Port Washington, WI
  • Average UV index in May: 4

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

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Average cloud cover in May
Port Washington, WI

Average cloud cover in May - Port Washington, WI
  • Average cloud cover in May: 42

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 28).

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Average visibility in May
Port Washington, WI

Average visibility in May - Port Washington, WI
  • Average visibility in May: 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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Port Washington, Wisconsin, USA

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