May weather forecast
Merrillan, WI

Weather in May

May, the last month of the spring in Merrillan, is an enjoyable month, with temperature in the range of an average low of 46.9°F (8.3°C) and an average high of 64.9°F (18.3°C).

Temperature

In May, the average high-temperature increases from a fresh 51.8°F (11°C) in April to a comfortable 64.9°F (18.3°C). The average low-temperature, in May, is 46.9°F (8.3°C).

Humidity

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

Rainfall

In Merrillan, during May, the rain falls for 15 days and regularly aggregates up to 2.13" (54mm) of precipitation. Throughout the year, there are 120.8 rainfall days, and 16.34" (415mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows in Merrillan. During 0.5 snowfall days, Merrillan aggregates 0.04" (1mm) of snow. Throughout the year, there are 62.1 snowfall days, and 13.11" (333mm) of snow is accumulated.

Daylight

The average length of the day in May is 14h and 49min.
On the first day of May in Merrillan, sunrise is at 5:53 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 5:22 am and sunset at 8:40 pm CDT.

Sunshine

In May, the average sunshine is 8.5h.

UV index

The months with the highest UV index in Merrillan are May through August, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in May in Merrillan?

In May, in Merrillan, the average high-temperature is 64.9°F (18.3°C), and the average low-temperature is 46.9°F (8.3°C).

What is the average humidity in May in Merrillan?

The average relative humidity in May is 79%.

How many days does it rain in May in Merrillan?

In Merrillan, during May, the rain falls for 15 days and regularly aggregates up to 2.13" (54mm) of precipitation.

What is the last month it snows in Merrillan?

May is the last month it regularly snows. During 0.5 snowfall days, in May, Merrillan aggregates 0.04" (1mm) of snow.

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

In May, the average day length is 14h and 49min.

When is the sunrise / sunset in May in Merrillan?

In May, on the first day of the month, sunrise is at 5:53 am and sunset at 8:07 pm. On the last day of the month, in Merrillan, Wisconsin, sunrise is at 5:22 am and sunset at 8:40 pm CDT.

How many hours of sunshine does Merrillan have in May?

In Merrillan, the average sunshine duration in May is 8.5h.

What is the month with the highest UV index in Merrillan?

The months with the highest UV index are May through August, with an average maximum UV index of 5.

What is the UV index intensity in May in Merrillan?

In May, the average daily maximum UV index in Merrillan is 5. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Merrillan, WI

Average temperature in May - Merrillan, WI
  • Average high temperature in May: 64.9°F

The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (20.7°F).

  • Average low temperature in May: 46.9°F

The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).

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Average pressure in May
Merrillan, WI

Average pressure in May - Merrillan, WI
  • Average pressure in May: 29.95"Hg

The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in May
Merrillan, WI

Average wind speed in May - Merrillan, WI
  • Average wind speed in May: 8.2mph

The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).

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Average humidity in May
Merrillan, WI

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

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is April (77%).

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Average rainfall in May
Merrillan, WI

Average rainfall in May - Merrillan, WI
  • Average rainfall in May: 2.13"

The wettest month (with the highest rainfall) is June (2.91").
The driest month (with the least rainfall) is January (0.51").

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Average rainfall days in May
Merrillan, WI

Average rainfall days in May - Merrillan, WI
  • Average rainfall days in May: 15 days

The month with the highest number of rainy days is June (17.1 days).
The month with the least rainy days is February (2.8 days).

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Average snowfall in May
Merrillan, WI

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

The month with the highest snowfall is February (2.99").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Merrillan, WI

Average snowfall days in May - Merrillan, WI
  • Average snowfall days in May: 0.5 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
Merrillan, WI

Average daylight in May / Average sunshine in May - Merrillan, WI
  • Average daylight in May: 14h and 49min

The month with the longest days is June (Average daylight: 15h and 29min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in May: 8h and 30min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

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Average sunshine days in May
Merrillan, WI

Average sunshine days in May - Merrillan, WI
  • Average sunshine days in May: 13.2 days

The month with the most sunshine days is October (18.4 days).
The month with the least sunshine days is June (9.8 days).

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Average UV index in May
Merrillan, WI

Average UV index in May - Merrillan, WI
  • Average UV index in May: 5

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

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Average cloud cover in May
Merrillan, WI

Average cloud cover in May - Merrillan, WI
  • Average cloud cover in May: 44

The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in May
Merrillan, WI

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

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

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