May weather forecast
Madison, IL

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Weather in May

May, the last month of the spring in Madison, is a warm month, with an average temperature fluctuating between 74.7°F (23.7°C) and 57.7°F (14.3°C).

Temperature

In Madison, stepping into May brings a temperature increase, moving up from April's refreshing 65.1°F (18.4°C) to a moderately hot 74.7°F (23.7°C). Madison registers a consistent average low-temperature of 57.7°F (14.3°C) during May.

Humidity

The most humid month is May, with an average relative humidity of 78%.

Rainfall

The month with the most rainfall is May, when the rain falls for 17.8 days and typically aggregates up to 4.21" (107mm) of precipitation.

Snowfall

In Madison, snow does not fall in April through October.

Daylight

In Madison, the average length of the day in May is 14h and 18min.
On the first day of May, sunrise is at 6:02 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:19 pm CDT.

Sunshine

In Madison, the average sunshine in May is 9.5h.

UV index

The months with the highest UV index in Madison, Illinois, are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 6 in May translates into this advice:
Ward off overexposure. Defence against solar harm is crucial. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Updated: Aug 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures?

Madison in May has an average high-temperature of 74.7°F (23.7°C) and an average low-temperature of 57.7°F (14.3°C).

What is the most humid month?

With an average relative humidity of 78%, May is the most humid month.

What is the average humidity in May?

In May, the average relative humidity is 78%.

What is the wettest month in Madison?

The month with the most rainfall is May, when the rain falls for 17.8 days and typically aggregates up to 4.21" (107mm) of precipitation.

How much does it rain in May?

In Madison, Illinois, in May, during 17.8 rainfall days, 4.21" (107mm) of precipitation is typically accumulated.

When it does not snow?

In Madison, Illinois, snow does not fall in April through October.

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

In Madison, the average day length in May is 14h and 18min.

When is the sunrise / sunset in May?

In May, on the first day of the month, sunrise is at 6:02 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:19 pm CDT.

How long on average sun shines in May?

In Madison, the average sunshine duration in May is 9.5h.

What is the month with the highest UV index?

The months with the highest UV index are May through August, with an average maximum UV index of 6.

How high is the UV index in May?

The average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from unprotected exposure to UV radiation.
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
Madison, IL

Average temperature in May - Madison, IL
  • Average high temperature in May: 74.7°F

The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (37.2°F).

  • Average low temperature in May: 57.7°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

Average pressure in May
Madison, IL

Average pressure in May - Madison, IL
  • Average pressure in May: 29.96"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in May
Madison, IL

Average wind speed in May - Madison, IL
  • Average wind speed in May: 7.3mph

The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).

Average humidity in May
Madison, IL

Average humidity in May - Madison, IL
  • Average humidity in May: 78%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (71%).

Average rainfall in May
Madison, IL

Average rainfall in May - Madison, IL
  • Average rainfall in May: 4.21"

The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is February (1.93").

Average rainfall days in May
Madison, IL

Average rainfall days in May - Madison, IL
  • Average rainfall days in May: 17.8 days

The months with the highest number of rainy days are May and July (17.8 days).
The month with the least rainy days is January (8.4 days).

Average snowfall in May
Madison, IL

Average snowfall in May - Madison, IL
  • Average snowfall in May: 0"

The month with the highest snowfall is February (2.4").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in May
Madison, IL

Average snowfall days in May - Madison, IL
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Madison, IL

Average daylight in May / Average sunshine in May - Madison, IL
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in May: 9h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

Average sunshine days in May
Madison, IL

Average sunshine days in May - Madison, IL
  • Average sunshine days in May: 10.7 days

The month with the most sunshine days is December (18 days).
The month with the least sunshine days is June (10.1 days).

Average UV index in May
Madison, IL

Average UV index in May - Madison, IL
  • Average UV index in May: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in May
Madison, IL

Average cloud cover in May - Madison, IL
  • Average cloud cover in May: 37

The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are June and August (Cloud cover 28).

Average visibility in May
Madison, IL

Average visibility in May - Madison, IL
  • 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).

Madison, Illinois, USA

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