May weather forecast
Plymouth, WI

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Weather in May

The last month of the spring, May, is a comfortable month in Plymouth, Wisconsin, with an average temperature fluctuating between 46°F (7.8°C) and 61.3°F (16.3°C).

Temperature

As Plymouth, Wisconsin, welcomes May, the average high-temperature sees a rise, transitioning from a frosty 49.1°F (9.5°C) in April to an enjoyable 61.3°F (16.3°C). May brings Plymouth a consistent average low-temperature of 46°F (7.8°C).

Humidity

In May, the average relative humidity is 78%.

Rainfall

The month with the most rainfall is May, when the rain falls for 17.8 days and typically aggregates up to 3.58" (91mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Plymouth. May is the last month it regularly snows. During 0.3 snowfall days, in May, Plymouth aggregates 0.04" (1mm) of snow. Throughout the year, there are 56.2 snowfall days, and 20.16" (512mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 45min.
On the first day of the month, sunrise is at 5:42 am and sunset at 7:55 pm. On the last day of May, sunrise is at 5:12 am and sunset at 8:26 pm CDT.

Sunshine

The average sunshine in May is 8.7h.

UV index

The average daily maximum UV index in May in Plymouth, Wisconsin, is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum UV index of 4 in May translates into the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Stay sun-safe with clothing that is both closely woven and worn loosely. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Updated: Jul 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May?

The high-temperature, in May, in Plymouth, records 61.3°F (16.3°C), while the low-temperature is 46°F (7.8°C).

What is the average humidity in May?

In Plymouth, the average relative humidity in May is 78%.

What is the wettest month?

May is the month with the most rainfall. Rain falls for 17.8 days and accumulates 3.58" (91mm) of precipitation.

How many days does it rain in May?

In Plymouth, in May, it is raining for 17.8 days, with typically 3.58" (91mm) of accumulated precipitation.

What is the last month it snows?

May is the last month it regularly snows. During 0.3 snowfall days, in May, Plymouth aggregates 0.04" (1mm) of snow.

How many hours of daylight does Plymouth have in May?

In May, the average day length in Plymouth is 14h and 45min.

When is the sunrise / sunset in May?

On the first day of May, sunrise is at 5:42 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 5:12 am and sunset at 8:26 pm CDT.

How many hours of sunshine does Plymouth have in May?

The average sunshine duration in May is 8.7h.

What is the UV index intensity in May?

In May, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
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
Plymouth, WI

Average temperature in May - Plymouth, WI
  • Average high temperature in May: 61.3°F

The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (23.9°F).

  • Average low temperature in May: 46°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).

Average pressure in May
Plymouth, WI

Average pressure in May - Plymouth, 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).

Average wind speed in May
Plymouth, WI

Average wind speed in May - Plymouth, WI
  • Average wind speed in May: 8.9mph

The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).

Average humidity in May
Plymouth, WI

Average humidity in May - Plymouth, WI
  • Average humidity in May: 78%

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

Average rainfall in May
Plymouth, WI

Average rainfall in May - Plymouth, WI
  • Average rainfall in May: 3.58"

The wettest month (with the highest rainfall) is May (3.58").
The driest month (with the least rainfall) is February (1.3").

Average rainfall days in May
Plymouth, WI

Average rainfall days in May - Plymouth, WI
  • Average rainfall days in May: 17.8 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (3.8 days).

Average snowfall in May
Plymouth, WI

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

The month with the highest snowfall is January (4.49").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Plymouth, WI

Average snowfall days in May - Plymouth, WI
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (13.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Plymouth, WI

Average daylight in May / Average sunshine in May - Plymouth, 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 month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 30min).

Average sunshine days in May
Plymouth, WI

Average sunshine days in May - Plymouth, WI
  • Average sunshine days in May: 11.8 days

The month with the most sunshine days is December (15.8 days).
The month with the least sunshine days is July (10.1 days).

Average UV index in May
Plymouth, WI

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

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in May
Plymouth, WI

Average cloud cover in May - Plymouth, WI
  • Average cloud cover in May: 42

The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 30).

Average visibility in May
Plymouth, WI

Average visibility in May - Plymouth, 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).

Plymouth, Wisconsin, USA

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