May weather forecast
Sussex, WI

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Weather in May

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

Temperature

The shift from April to May brings an increase in the average high-temperature, moving from a fresh 51.4°F (10.8°C) to a refreshing 63.5°F (17.5°C). Sussex's average low-temperature in May is measured at a chilly 47.3°F (8.5°C).

Humidity

The average relative humidity in May is 79%.

Rainfall

In Sussex, during May, the rain falls for 18.1 days and regularly aggregates up to 3.11" (79mm) of precipitation. In Sussex, Wisconsin, 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. May is the last month it regularly snows. During 0.2 snowfall days, in May, Sussex aggregates 0.04" (1mm) of snow. In Sussex, during the entire year, snow falls for 58.7 days and aggregates up to 20.47" (520mm) of snow.

Daylight

In Sussex, 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

The average sunshine in May is 8.7h.

UV index

The average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 4 during May translates into the following directions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Updated: Jun 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Sussex in May?

Sussex in May has an average high-temperature of 63.5°F (17.5°C) and an average low-temperature of 47.3°F (8.5°C).

What is the average humidity in May?

In May, the average relative humidity is 79%.

How many days does it rain in May?

In Sussex, in May, during 18.1 rainfall days, 3.11" (79mm) of precipitation is typically accumulated.

What is the last month it snows?

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

How many hours of daylight does Sussex have in May?

In Sussex, the average day length in May is 14h and 41min.

When are sunrise and sunset in May?

In May, on the first day of the month, 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 May, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate health threat 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).

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

Sussex, Wisconsin, USA

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