May weather forecast
Arthur, IL

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Weather in May

The last month of the spring, May, is a pleasant month in Arthur, Illinois, with an average temperature varying between 56.7°F (13.7°C) and 72.9°F (22.7°C).

Temperature

May's onset is marked by a temperature increase, moving from a comfortable 62.2°F (16.8°C) in April to a pleasant 72.9°F (22.7°C). During May, the average low-temperature is a moderate 56.7°F (13.7°C).

Humidity

In Arthur, the average relative humidity in May is 77%.

Rainfall

In Arthur, Illinois, during May, the rain falls for 16.8 days and regularly aggregates up to 2.52" (64mm) of precipitation. In Arthur, during the entire year, the rain falls for 144.2 days and collects up to 22.4" (569mm) of precipitation.

Snowfall

In Arthur, Illinois, snow does not fall in May through October.

Daylight

In May, the average length of the day is 14h and 23min.
On the first day of May, sunrise is at 5:53 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 5:27 am and sunset at 8:15 pm CDT.

Sunshine

In May, the average sunshine is 9.1h.

UV index

The average daily maximum UV index in May in Arthur is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 5 during May morphs into the following directions:
Adopt protective measures - Suggestions to resist sunburn are offered. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
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Frequently asked questions

What is the temperature in May in Arthur?

Arthur in May has an average high-temperature of 72.9°F (22.7°C) and an average low-temperature of 56.7°F (13.7°C).

What is the average humidity in May in Arthur?

The average relative humidity in May in Arthur is 77%.

How much does it rain in Arthur in May?

In Arthur, Illinois, during May, the rain falls for 16.8 days and regularly aggregates up to 2.52" (64mm) of precipitation.

When it does not snow in Arthur?

May through October are months without snowfall in Arthur.

Does it snow in Arthur in May?

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

How many hours of daylight does Arthur have in May?

In Arthur, Illinois, the average day length in May is 14h and 23min.

When is the sunrise / sunset in May in Arthur?

In May, on the first day of the month, sunrise is at 5:53 am and sunset at 7:48 pm. On the last day of the month, in Arthur, Illinois, sunrise is at 5:27 am and sunset at 8:15 pm CDT.

How many hours of sunshine does Arthur have in May?

In Arthur, Illinois, the average sunshine duration in May is 9.1h.

How high is the UV index in May in Arthur?

In May, the average daily maximum UV index in Arthur is 5. A UV Index value of 3 to 5 symbolizes 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
Arthur, IL

Average temperature in May - Arthur, IL
  • Average high temperature in May: 72.9°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in May: 56.7°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure in May
Arthur, IL

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

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in May
Arthur, IL

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

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

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Average humidity in May
Arthur, IL

Average humidity in May - Arthur, IL
  • Average humidity in May: 77%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in May
Arthur, IL

Average rainfall in May - Arthur, IL
  • Average rainfall in May: 2.52"

The wettest month (with the highest rainfall) is April (2.72").
The driest months (with the least rainfall) are February and September (1.26").

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Average rainfall days in May
Arthur, IL

Average rainfall days in May - Arthur, IL
  • Average rainfall days in May: 16.8 days

The months with the highest number of rainy days are May and July (16.8 days).
The month with the least rainy days is January (7.3 days).

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Average snowfall in May
Arthur, IL

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

The month with the highest snowfall is February (1.89").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
Arthur, IL

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

The month with the highest number of snowfall days is January (8.2 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
Arthur, IL

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in May: 9h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in May
Arthur, IL

Average sunshine days in May - Arthur, IL
  • Average sunshine days in May: 10.9 days

The month with the most sunshine days is October (19 days).
The month with the least sunshine days is July (10.8 days).

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Average UV index in May
Arthur, IL

Average UV index in May - Arthur, 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).

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Average cloud cover in May
Arthur, IL

Average cloud cover in May - Arthur, IL
  • Average cloud cover in May: 39

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is June (Cloud cover 30).

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Average visibility in May
Arthur, IL

Average visibility in May - Arthur, 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).

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Arthur, Illinois, USA

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