May weather forecast
Champaign, IL

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An old building that works as an auditorium within the University of Illinois in Champaign
An old building that works as an auditorium within the University of Illinois in Champaign

Weather in May

In May, the spring season peaks in Champaign, sliding it to the warmer side of the weather spectrum. The shift from the relatively cooler April is notable with a significant rise in average temperatures. Besides, rainfall figures present a slight decline, landing at approximately 2.2" (56mm). Even though May matches April in terms of high rainfall, the latter experiences rainfall over more days. More daylight hours and increased sunshine deepen the pleasurable weather picture of the city during this month.

Temperature

As April gives way to May, the average high-temperature displays an increase, moving from a refreshing 61.3°F (16.3°C) to a pleasant 72.1°F (22.3°C). Throughout May, an average low-temperature of 56.1°F (13.4°C) is experienced.

Humidity

In May, the average relative humidity is 76%.

Rainfall

In Champaign, Illinois, in May, it is raining for 15.3 days, with typically 2.2" (56mm) of accumulated precipitation. Throughout the year, there are 129.9 rainfall days, and 18.15" (461mm) of precipitation is accumulated.

Snowfall

In Champaign, snow does not fall in May through October.

Daylight

In May, the average length of the day is 14h and 25min.
On the first day of May, sunrise is at 5:51 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 5:25 am and sunset at 8:15 pm CDT.

Sunshine

In May, the average sunshine is 9h.

UV index

The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: In May, a daily UV index of 5 turns into the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Updated: Aug 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature?

The average high-temperature, in May, in Champaign, is 72.1°F (22.3°C), while the average low-temperature is 56.1°F (13.4°C).

What is the average humidity in May?

In Champaign, Illinois, the average relative humidity in May is 76%.

How much does it rain in May?

In May, the rain falls for 15.3 days. Throughout May, 2.2" (56mm) of precipitation is accumulated.

When it does not snow?

In Champaign, snow does not fall in May through October.

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 in Champaign?

In Champaign, the average day length in May is 14h and 25min.

When are sunrise and sunset in May?

In May, on the first day of the month, sunrise is at 5:51 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 5:25 am and sunset at 8:15 pm CDT.

How long on average sun shines in May?

The average sunshine duration in May is 9h.

What is the UV index reading in May in Champaign?

In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to the Sun's 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
Champaign, IL

Average temperature in May - Champaign, IL
  • Average high temperature in May: 72.1°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.8°F).

  • Average low temperature in May: 56.1°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 (20.5°F).

Average pressure in May
Champaign, IL

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in May
Champaign, IL

Average wind speed in May - Champaign, IL
  • Average wind speed in May: 8.9mph

The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

Average humidity in May
Champaign, IL

Average humidity in May - Champaign, IL
  • Average humidity in May: 76%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (70%).

Average rainfall in May
Champaign, IL

Average rainfall in May - Champaign, IL
  • Average rainfall in May: 2.2"

The wettest month (with the highest rainfall) is April (2.24").
The driest month (with the least rainfall) is September (0.94").

Average rainfall days in May
Champaign, IL

Average rainfall days in May - Champaign, IL
  • Average rainfall days in May: 15.3 days

The month with the highest number of rainy days is May (15.3 days).
The months with the least rainy days are January and February (6 days).

Average snowfall in May
Champaign, IL

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

The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in May
Champaign, IL

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

The month with the highest number of snowfall days is January (8.7 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
Champaign, IL

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

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in May: 9h and 0min

The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in May
Champaign, IL

Average sunshine days in May - Champaign, IL
  • Average sunshine days in May: 12.6 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11.8 days).

Average UV index in May
Champaign, IL

Average UV index in May - Champaign, IL
  • Average UV index in May: 5

The months with the highest UV index are 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
Champaign, IL

Average cloud cover in May - Champaign, IL
  • Average cloud cover in May: 40

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 31).

Average visibility in May
Champaign, IL

Average visibility in May - Champaign, IL
  • Average visibility in May: 6mi

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

Champaign, Illinois, USA

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