May weather forecast
Sussex, WI

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Weather in May

May, the last month of the spring in Sussex, is a refreshing month, with an average temperature fluctuating between 63.5°F (17.5°C) and 47.3°F (8.5°C).

Temperature

May marks a rise in the average high-temperature, moving from April's cool 51.4°F (10.8°C) to a refreshing 63.5°F (17.5°C). An average low-temperature of 47.3°F (8.5°C) marks the nights in Sussex throughout May.

Humidity

The average relative humidity in May in Sussex, Wisconsin, is 79%.

Rainfall

In Sussex, in May, it is raining for 18.1 days, with typically 3.11" (79mm) of accumulated precipitation. In Sussex, during the entire year, the rain falls for 149.2 days and collects up to 28.54" (725mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Sussex. May is the last month it regularly snows in Sussex, Wisconsin. During 0.2 snowfall days, in May, Sussex aggregates 0.04" (1mm) of snow. Throughout the year, in Sussex, there are 58.7 snowfall days, and 20.47" (520mm) of snow is accumulated.

Daylight

The average length of the day in May is 14h and 41min.
On the first day of May, sunrise is at 5:45 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:16 am and sunset at 8:25 pm CDT.

Sunshine

In Sussex, Wisconsin, the average sunshine in May is 8.7h.

UV index

In Sussex, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: A daily maximum UV index of 4 in May translates into the following instructions:
Be vigilant - Suggestions to stave off sun damage are provided. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
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Frequently asked questions

What is the temperature in May in Sussex?

The average high-temperature, in May, in Sussex, is 63.5°F (17.5°C), while the average low-temperature is 47.3°F (8.5°C).

What is the average humidity in May in Sussex?

The average relative humidity in May in Sussex is 79%.

How many days does it rain in May in Sussex?

In Sussex, during May, the rain falls for 18.1 days and regularly aggregates up to 3.11" (79mm) of precipitation.

What is the last month it snows in Sussex?

May is the last month it regularly snows in Sussex, Wisconsin. During 0.2 snowfall days, in May, Sussex aggregates 0.04" (1mm) of snow.

What is the average length of the day in May in Sussex?

The average day length in May is 14h and 41min.

When is the sunrise / sunset in May in Sussex?

On the first day of May in Sussex, Wisconsin, sunrise is at 5:45 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:16 am and sunset at 8:25 pm CDT.

How many hours of sunshine does Sussex have in May?

In May, the average sunshine duration is 8.7h.

How high is the UV index in May in Sussex?

In May, the average daily maximum UV index in Sussex, Wisconsin, is 4. A UV Index reading of 3 to 5 represents a medium health risk from 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 May
Sussex, WI

Average temperature in May - Sussex, WI
  • Average high temperature in May: 63.5°F

The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (25.2°F).

  • Average low temperature in May: 47.3°F

The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).

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Average pressure in May
Sussex, WI

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

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in May
Sussex, WI

Average wind speed in May - Sussex, WI
  • Average wind speed in May: 8.6mph

The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.7mph).

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Average humidity in May
Sussex, WI

Average humidity in May - Sussex, WI
  • Average humidity in May: 79%

The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (77%).

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Average rainfall in May
Sussex, WI

Average rainfall in May - Sussex, WI
  • Average rainfall in May: 3.11"

The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is February (1.46").

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Average rainfall days in May
Sussex, WI

Average rainfall days in May - Sussex, WI
  • Average rainfall days in May: 18.1 days

The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is February (5.3 days).

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Average snowfall in May
Sussex, WI

Average snowfall in May - Sussex, WI
  • Average snowfall in May: 0.04"

The month with the highest snowfall is January (5.43").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Sussex, WI

Average snowfall days in May - Sussex, WI
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is January (15.4 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
Sussex, WI

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

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in May: 8h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

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Average sunshine days in May
Sussex, WI

Average sunshine days in May - Sussex, WI
  • Average sunshine days in May: 10.6 days

The month with the most sunshine days is November (15.9 days).
The months with the least sunshine days are June and July (10.3 days).

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Average UV index in May
Sussex, WI

Average UV index in May - Sussex, WI
  • Average UV index in May: 4

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

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Average cloud cover in May
Sussex, WI

Average cloud cover in May - Sussex, 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 August and September (Cloud cover 30).

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Average visibility in May
Sussex, WI

Average visibility in May - Sussex, WI
  • Average visibility in May: 6mi

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

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Sussex, Wisconsin, USA

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