May weather forecast
Brookfield, WI

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Weather in May

May witnesses a further warming trend as Brookfield moves closer to summer. The increase in daylight hours lends itself beautifully to outdoor activities, and with a relative drop in humidity, conditions become comfortable. Amidst the warm embrace of spring, lush green landscapes compliment the sparkling sunshine. The propensity for rainfall remains, nurturing the vibrant flora around the city. Brookfield's weather in May is characteristic of the beautiful Wisconsin spring, serving as a placid prologue for the hot days of summer that lie ahead.

Temperature

May's arrival brings a change in high-temperatures, moving from a cool 50.7°F (10.4°C) in April to a refreshing 62.6°F (17°C). An average low-temperature of 47.8°F (8.8°C) is anticipated throughout the nights during May.

Humidity

In May, the average relative humidity is 78%.

Rainfall

In Brookfield, in May, it is raining for 15.8 days, with typically 2.17" (55mm) of accumulated precipitation. In Brookfield, during the entire year, the rain falls for 129.9 days and collects up to 19.69" (500mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Brookfield, Wisconsin. May is the last month it regularly snows. During 0.3 snowfall days, in May, Brookfield aggregates 0.04" (1mm) of snow. Throughout the year, there are 47.4 snowfall days, and 12.48" (317mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 41min.
On the first day of May, sunrise is at 5:44 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:15 am and sunset at 8:24 pm CDT.

Sunshine

In May, the average sunshine is 8.7h.

UV index

In May, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 4 during May translates into these guidelines:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Boost your sun resistance with garments that are densely woven yet spacious. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.

Frequently asked questions

What are May temperatures?

In May, in Brookfield, the average high-temperature is 62.6°F (17°C), and the average low-temperature is 47.8°F (8.8°C).

What is the average humidity in May?

In May, the average relative humidity is 78%.

How many days does it rain in May?

In Brookfield, in May, during 15.8 rainfall days, 2.17" (55mm) of precipitation is typically accumulated.

What is the last month it snows?

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

What is the average length of the day in May?

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

When is the sunrise / sunset in May?

In May, on the first day of the month, sunrise is at 5:44 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:15 am and sunset at 8:24 pm CDT.

How many hours of sunshine does Brookfield have in May?

In May, the average sunshine duration is 8.7h.

What is the UV index intensity in May?

In Brookfield, 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
Brookfield, WI

Average temperature in May - Brookfield, WI
  • Average high temperature in May: 62.6°F

The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (25.3°F).

  • Average low temperature in May: 47.8°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).

Average pressure in May
Brookfield, WI

Average pressure in May - Brookfield, 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 (29.92"Hg).

Average wind speed in May
Brookfield, WI

Average wind speed in May - Brookfield, WI
  • Average wind speed in May: 8.7mph

The windiest month (with the highest average wind speed) is January (11mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).

Average humidity in May
Brookfield, WI

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

The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April, October and November (76%).

Average rainfall in May
Brookfield, WI

Average rainfall in May - Brookfield, WI
  • Average rainfall in May: 2.17"

The wettest month (with the highest rainfall) is July (2.6").
The driest month (with the least rainfall) is December (0.75").

Average rainfall days in May
Brookfield, WI

Average rainfall days in May - Brookfield, WI
  • Average rainfall days in May: 15.8 days

The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is February (3.8 days).

Average snowfall in May
Brookfield, WI

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

The month with the highest snowfall is January (3.39").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Brookfield, WI

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

The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Brookfield, 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 24min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

Average sunshine days in May
Brookfield, WI

Average sunshine days in May - Brookfield, WI
  • Average sunshine days in May: 13.3 days

The month with the most sunshine days is December (18.6 days).
The month with the least sunshine days is July (12.1 days).

Average UV index in May
Brookfield, WI

Average UV index in May - Brookfield, 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 and December (UV index 1).

Average cloud cover in May
Brookfield, WI

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

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 28).

Average visibility in May
Brookfield, WI

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

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

Brookfield, Wisconsin, USA

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