Madison
Wisconsin, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Madison, WI

A view of the State Capitol building in Madison, Wisconsin, on a beautiful spring evening
A view of the State Capitol building in Madison, Wisconsin, on a beautiful spring evening
The last month of the spring, May, is a pleasant month in Madison, Wisconsin, with average temperature fluctuating between 46°F (7.8°C) and 68.4°F (20.2°C).

Temperature

In Madison, Wisconsin, the average high-temperature in May increases, from a mild 57.4°F (14.1°C) in April, to an agreeable 68.4°F (20.2°C). The average low-temperature, in Madison, is 46°F (7.8°C).

Humidity

May is the least humid month, with an average relative humidity of 65.8%.

Rainfall

In Madison, during May, the rain falls for 11.9 days and regularly aggregates up to 3.6" (90.2mm) of precipitation. Throughout the year, there are 124.8 rainfall days, and 34.5" (875.9mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall.

Daylight

The average length of the day in Madison is 14.7h.

Sunshine

The average sunshine in Madison, Wisconsin, is 8.5h.

UV index

In Madison, Wisconsin, the average daily maximum UV index in May is 7. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to the UV radiation for average individuals.
In May, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in May in Madison?

The average high-temperature, in May, is 68.4°F (20.2°C), while the average low-temperature is 46°F (7.8°C).

What is the least humid month in Madison?

May is the least humid month in Madison, with an average relative humidity of 65.8%.

What is the average humidity in May in Madison?

In May, the average relative humidity in Madison is 65.8%.

How many days does it rain in May in Madison?

In May, in Madison, Wisconsin, the rain falls for 11.9 days. Throughout May, 3.6" (90.2mm) of precipitation is accumulated.

What is the last month it snows in Madison?

May is the last month it regularly snows in Madison. During 0.2 snowfall days, in May, Madison aggregates 0.2" (5.1mm) of snow.

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

In Madison, the average length of the day in May is 14.7h.

How many hours of sunshine does Madison have in May?

The average sunshine in May in Madison is 8.5h.

How high is the UV index in May in Madison?

In May, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high health threat from the exposure to the Sun's UV rays.
Average temperature in May - Madison, WI
  • Average high temperature in May: 68.4°F

The warmest month (with the highest average high temperature) is July (81.6°F).
The month with the lowest average high temperature is January (26.4°F).

  • Average low temperature in May: 46.1°F

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (11.1°F).

Average humidity in May - Madison, WI
  • Average humidity in May: 65.8%

The month with the highest relative humidity is December (78.5%).
The month with the lowest relative humidity is May (65.8%).

Average rainfall in May - Madison, WI
  • Average rainfall in May: 3.6"

The wettest month (with the highest rainfall) is June (4.5").
The driest month (with the lowest rainfall) is January (1.2").

Average rainfall days in May - Madison, WI
  • Average rainfall days in May: 11.9 days

The month with the highest number of rainy days is April (12.1 days).
The month with the lowest number of rainy days is February (9.2 days).

Average snowfall in May - Madison, WI
  • Average snowfall in May: 0.2"

The month with the highest snowfall is December (13.5").
Months with the lowest snowfall are June, July, August and September (0").

Average snowfall days in May - Madison, WI
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is January (9.8 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average daylight in May / Average sunshine in May - Madison, WI
  • Average daylight in May: 14.7h

The month with the longest days is June (Average daylight: 15.3h).
The month with shortest days is December (Average daylight: 9.1h).

  • Average sunshine in May: 8.5h

Months with most sunshine are June and July (Average sunshine: 9.8h).
The month with least sunshine is December (Average sunshine: 3.5h).

Average UV index in May - Madison, WI
  • Average UV index in May: 7

The month with the highest UV index is July (UV index 9).
Months with the lowest UV index are January and December (UV index 1).