May weather forecast
Shannon, IL

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Weather in May

The last month of the spring, May, is a pleasant month in Shannon, Illinois, with an average temperature varying between 68.5°F (20.3°C) and 51.4°F (10.8°C).

Temperature

As Shannon transitions into May, the average high-temperature shows a change, moving from a refreshing 56.5°F (13.6°C) in April to an agreeable 68.5°F (20.3°C). During May, the temperature tends to dip to an average of 51.4°F (10.8°C) at night.

Humidity

The average relative humidity in May in Shannon is 79%.

Rainfall

May is the month with the most rainfall in Shannon. Rain falls for 17.9 days and accumulates 2.76" (70mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

The average length of the day in May in Shannon is 14h and 36min.
On the first day of May, sunrise is at 5:53 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:25 am and sunset at 8:28 pm CDT.

Sunshine

The average sunshine in May is 8.5h.

UV index

In May, the average daily maximum UV index in Shannon is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In May, an average UV index of 5 transforms into the following instructions:
Exercise prevention - Protecting skin and eyes from harm is required. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
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Frequently asked questions

What are the temperatures in Shannon in May?

In May, the average high-temperature and low-temperature in Shannon, Illinois, are 68.5°F (20.3°C) and 51.4°F (10.8°C) respectively.

What is the average humidity in May in Shannon?

In May, the average relative humidity in Shannon is 79%.

What is the rainiest month in Shannon?

The month with the most rainfall in Shannon, Illinois, is May, when the rain falls for 17.9 days and typically aggregates up to 2.76" (70mm) of precipitation.

How much does it rain in Shannon in May?

In Shannon, Illinois, in May, it is raining for 17.9 days, with typically 2.76" (70mm) of accumulated precipitation.

When it does not snow in Shannon?

May through September are months without snowfall.

Does it snow in Shannon in May?

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

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

In Shannon, Illinois, the average day length in May is 14h and 36min.

When are sunrise and sunset in May in Shannon?

In May, on the first day of the month, sunrise is at 5:53 am and sunset at 7:58 pm. On the last day of the month, in Shannon, sunrise is at 5:25 am and sunset at 8:28 pm CDT.

How long on average sun shines in May in Shannon?

In May, the average sunshine duration in Shannon is 8.5h.

What is the UV index intensity in May in Shannon?

The average daily maximum UV index in May is 5. A UV Index estimate 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
Shannon, IL

Average temperature in May - Shannon, IL
  • Average high temperature in May: 68.5°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (25.9°F).

  • Average low temperature in May: 51.4°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).

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Average pressure in May
Shannon, IL

Average pressure in May - Shannon, IL
  • Average pressure in May: 29.95"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in May
Shannon, IL

Average wind speed in May - Shannon, IL
  • Average wind speed in May: 8.8mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

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Average humidity in May
Shannon, IL

Average humidity in May - Shannon, IL
  • Average humidity in May: 79%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (75%).

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Average rainfall in May
Shannon, IL

Average rainfall in May - Shannon, IL
  • Average rainfall in May: 2.76"

The wettest month (with the highest rainfall) is May (2.76").
The driest months (with the least rainfall) are January and February (0.71").

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Average rainfall days in May
Shannon, IL

Average rainfall days in May - Shannon, IL
  • Average rainfall days in May: 17.9 days

The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is February (4.4 days).

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Average snowfall in May
Shannon, IL

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

The month with the highest snowfall is January (2.64").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
Shannon, IL

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

The month with the highest number of snowfall days is January (11.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Shannon, IL
  • Average daylight in May: 14h and 4min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in May: 8h and 3min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in May
Shannon, IL

Average sunshine days in May - Shannon, IL
  • Average sunshine days in May: 11.6 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (10 days).

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Average UV index in May
Shannon, IL

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

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).

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Average cloud cover in May
Shannon, IL

Average cloud cover in May - Shannon, IL
  • Average cloud cover in May: 43

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 32).

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Average visibility in May
Shannon, IL

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

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

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Shannon, Illinois, USA

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