May weather forecast
Mason, WI

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Weather in May

May, the last month of the spring in Mason, is an enjoyable month, with an average temperature varying between 61.2°F (16.2°C) and 42.8°F (6°C).

Temperature

May signals a clear increase in the average high-temperature, soaring from April's frosty 46.4°F (8°C) to a refreshing 61.2°F (16.2°C). Throughout the May nights, Mason encounters a low-temperature of 42.8°F (6°C).

Humidity

The least humid month is May, with an average relative humidity of 72%.

Rainfall

In Mason, in May, it is raining for 14.8 days, with typically 2.44" (62mm) of accumulated precipitation. In Mason, during the entire year, the rain falls for 121.6 days and collects up to 21.42" (544mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 1.1 snowfall days, in May, Mason aggregates 0.98" (25mm) of snow. Throughout the year, there are 99.1 snowfall days, and 37.13" (943mm) of snow is accumulated.

Daylight

In May, the average length of the day is 15h and 2min.
On the first day of May, sunrise is at 5:48 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 5:15 am and sunset at 8:48 pm CDT.

Sunshine

In Mason, the average sunshine in May is 8.6h.

UV index

In Mason, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The daily high UV index of 4 during May translates into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.

Frequently asked questions

What is the temperature in May?

In May, the average high-temperature and low-temperature are 61.2°F (16.2°C) and 42.8°F (6°C) respectively.

What is the least humid month?

The least humid month is May, with an average relative humidity of 72%.

What is the average humidity in May?

In Mason, the average relative humidity in May is 72%.

How many days does it rain in May?

In May, the rain falls for 14.8 days. Throughout May, 2.44" (62mm) of precipitation is accumulated.

What is the last month it snows?

May is the last month it regularly snows in Mason. During 1.1 snowfall days, in May, Mason aggregates 0.98" (25mm) of snow.

What is the average length of the day in May?

In May, the average day length is 15h and 2min.

What time are sunrise and sunset in May?

On the first day of May, sunrise is at 5:48 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 5:15 am and sunset at 8:48 pm CDT.

How long on average sun shines in May?

In Mason, the average sunshine duration in May is 8.6h.

How high is the UV index in May?

The average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health 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
Mason, WI

Average temperature in May - Mason, WI
  • Average high temperature in May: 61.2°F

The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is January (19.4°F).

  • Average low temperature in May: 42.8°F

The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (8.6°F).

Average pressure in May
Mason, WI

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

The month with the highest atmospheric pressure is February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in May
Mason, WI

Average wind speed in May - Mason, WI
  • Average wind speed in May: 7.2mph

The windiest month (with the highest average wind speed) is November (9.1mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

Average humidity in May
Mason, WI

Average humidity in May - Mason, WI
  • Average humidity in May: 72%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is May (72%).

Average rainfall in May
Mason, WI

Average rainfall in May - Mason, WI
  • Average rainfall in May: 2.44"

The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is January (0.94").

Average rainfall days in May
Mason, WI

Average rainfall days in May - Mason, WI
  • Average rainfall days in May: 14.8 days

The month with the highest number of rainy days is June (15.5 days).
The month with the least rainy days is January (3.2 days).

Average snowfall in May
Mason, WI

Average snowfall in May - Mason, WI
  • Average snowfall in May: 0.98"

The month with the highest snowfall is December (7.95").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Mason, WI

Average snowfall days in May - Mason, WI
  • Average snowfall days in May: 1.1 days

The month with the highest number of snowfall days is January (21.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Mason, WI
  • Average daylight in May: 15h and 0min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • 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 January (Average sunshine: 2h and 18min).

Average sunshine days in May
Mason, WI

Average sunshine days in May - Mason, WI
  • Average sunshine days in May: 14.2 days

The month with the most sunshine days is September (15 days).
The month with the least sunshine days is December (9.8 days).

Average UV index in May
Mason, WI

Average UV index in May - Mason, 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).

Average cloud cover in May
Mason, WI

Average cloud cover in May - Mason, WI
  • Average cloud cover in May: 43

The month with the most cloud cover is January (Cloud cover 78).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in May
Mason, WI

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

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

Mason, Wisconsin, USA

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