May weather forecast
Sugar Island, IL

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Weather in May

May, the last month of the spring in Sugar Island, is a pleasant month, with an average temperature fluctuating between 71.2°F (21.8°C) and 54.5°F (12.5°C).

Temperature

As April transitions into May, a change in temperatures is observed, with average highs moving from a moderate 59.5°F (15.3°C) to an agreeable 71.2°F (21.8°C). Sugar Island experiences a steady low-temperature of 54.5°F (12.5°C) throughout May.

Humidity

In Sugar Island, the average relative humidity in May is 76%.

Rainfall

May is the month with the most rainfall in Sugar Island, Illinois. Rain falls for 17.3 days and accumulates 3.19" (81mm) of precipitation.

Snowfall

In Sugar Island, snow does not fall in May through September.

Daylight

The average length of the day in May is 14h and 30min.
On the first day of May in Sugar Island, sunrise is at 5:48 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 5:21 am and sunset at 8:16 pm CDT.

Sunshine

In May, the average sunshine in Sugar Island is 8.7h.

UV index

In Sugar Island, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 5 during May translates into the following directions:
Act with care - The suggestion to avoid sunburn is emphasized. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
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Frequently asked questions

What is the usual temperature for Sugar Island in May?

In May, the average high-temperature and low-temperature are 71.2°F (21.8°C) and 54.5°F (12.5°C) respectively.

What is the average humidity in May in Sugar Island?

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

What is the rainiest month in Sugar Island?

May is the month with the most rainfall. Rain falls for 17.3 days and accumulates 3.19" (81mm) of precipitation.

How much does it rain in Sugar Island in May?

In Sugar Island, in May, it is raining for 17.3 days, with typically 3.19" (81mm) of accumulated precipitation.

When it does not snow in Sugar Island?

In Sugar Island, Illinois, snow does not fall in May through September.

Does it snow in Sugar Island in May?

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

How many hours of daylight does Sugar Island have in May?

In Sugar Island, the average day length in May is 14h and 30min.

When are sunrise and sunset in May in Sugar Island?

On the first day of May in Sugar Island, sunrise is at 5:48 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 5:21 am and sunset at 8:16 pm CDT.

How many hours of sunshine does Sugar Island have in May?

In Sugar Island, the average sunshine duration in May is 8.7h.

What is the UV index reading in May in Sugar Island?

In May, the average daily maximum UV index in Sugar Island is 5. A UV Index reading of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.
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
Sugar Island, IL

Average temperature in May - Sugar Island, IL
  • Average high temperature in May: 71.2°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 (30.2°F).

  • Average low temperature in May: 54.5°F

The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).

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Average pressure in May
Sugar Island, IL

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

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in May
Sugar Island, IL

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

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in May
Sugar Island, IL

Average humidity in May - Sugar Island, 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 (71%).

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Average rainfall in May
Sugar Island, IL

Average rainfall in May - Sugar Island, IL
  • Average rainfall in May: 3.19"

The wettest month (with the highest rainfall) is May (3.19").
The driest months (with the least rainfall) are January, February and December (1.06").

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Average rainfall days in May
Sugar Island, IL

Average rainfall days in May - Sugar Island, IL
  • Average rainfall days in May: 17.3 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (5.1 days).

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Average snowfall in May
Sugar Island, IL

Average snowfall in May - Sugar Island, IL
  • Average snowfall in May: 0"

The month with the highest snowfall is February (2.48").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
Sugar Island, IL

Average snowfall days in May - Sugar Island, IL
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (10.8 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
Sugar Island, IL

Average daylight in May / Average sunshine in May - Sugar Island, IL
  • Average daylight in May: 14h and 3min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in May: 8h and 4min

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

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Average sunshine days in May
Sugar Island, IL

Average sunshine days in May - Sugar Island, IL
  • Average sunshine days in May: 11.6 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (10 days).

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Average UV index in May
Sugar Island, IL

Average UV index in May - Sugar Island, IL
  • Average UV index in May: 5

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in May
Sugar Island, IL

Average cloud cover in May - Sugar Island, IL
  • Average cloud cover in May: 42

The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 34).

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Average visibility in May
Sugar Island, IL

Average visibility in May - Sugar Island, 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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Sugar Island, Illinois, USA

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