May weather forecast
South Milwaukee, WI

Share

Weather in May

May, the last month of the spring in South Milwaukee, is a mild month, with an average temperature ranging between max 59.2°F (15.1°C) and min 47.8°F (8.8°C).

Temperature

The start of May brings a shift in the average high-temperature, increasing from April's chilly 48.7°F (9.3°C) to a moderate 59.2°F (15.1°C). May brings South Milwaukee a consistent average low-temperature of 47.8°F (8.8°C).

Humidity

The average relative humidity in May is 79%.

Rainfall

In May, in South Milwaukee, the rain falls for 14.3 days. Throughout May, 2.17" (55mm) of precipitation is accumulated. Throughout the year, there are 131.9 rainfall days, and 18.54" (471mm) of precipitation is accumulated.

Snowfall

In South Milwaukee, snow does not fall in May through September.

Daylight

In May, the average length of the day is 14h and 40min.
On the first day of May, sunrise is at 5:44 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:15 am and sunset at 8:23 pm CDT.

Sunshine

In South Milwaukee, the average sunshine in May 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 moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum high daily UV index of 4 during May translates into the following directions:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Updated: Jun 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in May?

In South Milwaukee, 59.2°F (15.1°C) is the average high-temperature and 47.8°F (8.8°C) is the average low-temperature during May.

What is the average humidity in May?

In May, the average relative humidity is 79%.

How many days does it rain in May?

In South Milwaukee, in May, it is raining for 14.3 days, with typically 2.17" (55mm) of accumulated precipitation.

When it does not snow in South Milwaukee?

May through September are months without snowfall.

Does it snow in May?

In May, it doesn't snow. April is the latest month when it typically snows.

What is the average length of the day in May?

The average day length in May is 14h and 40min.

When is the sunrise / sunset in May?

On the first day of May, sunrise is at 5:44 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:15 am and sunset at 8:23 pm CDT.

How long on average sun shines in May?

In May, the average sunshine duration is 8.7h.

What is the UV index reading in May?

In South Milwaukee, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat 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
South Milwaukee, WI

Average temperature in May - South Milwaukee, WI
  • Average high temperature in May: 59.2°F

The warmest month (with the highest average high temperature) is July (75.9°F).
The month with the lowest average high temperature is January (27°F).

  • Average low temperature in May: 47.8°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (18°F).

Average pressure in May
South Milwaukee, WI

Average pressure in May - South Milwaukee, 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
South Milwaukee, WI

Average wind speed in May - South Milwaukee, WI
  • Average wind speed in May: 9.5mph

The windiest month (with the highest average wind speed) is January (12.6mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).

Average humidity in May
South Milwaukee, WI

Average humidity in May - South Milwaukee, WI
  • Average humidity in May: 79%

The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are October and November (75%).

Average rainfall in May
South Milwaukee, WI

Average rainfall in May - South Milwaukee, WI
  • Average rainfall in May: 2.17"

The wettest month (with the highest rainfall) is July (2.4").
The driest month (with the least rainfall) is February (0.75").

Average rainfall days in May
South Milwaukee, WI

Average rainfall days in May - South Milwaukee, WI
  • Average rainfall days in May: 14.3 days

The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is February (4.3 days).

Average snowfall in May
South Milwaukee, WI

Average snowfall in May - South Milwaukee, WI
  • Average snowfall in May: 0"

The month with the highest snowfall is January (2.01").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in May
South Milwaukee, WI

Average snowfall days in May - South Milwaukee, WI
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (13.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
South Milwaukee, WI

Average daylight in May / Average sunshine in May - South Milwaukee, 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 July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days in May
South Milwaukee, WI

Average sunshine days in May - South Milwaukee, WI
  • Average sunshine days in May: 14 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is July (11.6 days).

Average UV index in May
South Milwaukee, WI

Average UV index in May - South Milwaukee, 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
South Milwaukee, WI

Average cloud cover in May - South Milwaukee, WI
  • Average cloud cover in May: 41

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 27).

Average visibility in May
South Milwaukee, WI

Average visibility in May - South Milwaukee, 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).

South Milwaukee, Wisconsin, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location