May weather forecast
Long Lake, IL

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Weather in May

The last month of the spring, May, is an enjoyable month in Long Lake, Illinois, with an average temperature varying between 65.3°F (18.5°C) and 49.6°F (9.8°C).

Temperature

Long Lake sees an increase in the average high-temperature with the arrival of May, moving from April's cool 53.6°F (12°C) to a refreshing 65.3°F (18.5°C). The average temperature during May nights in Long Lake is registered at a chilly 49.6°F (9.8°C).

Humidity

In May, the average relative humidity in Long Lake is 78%.

Rainfall

In Long Lake, during May, the rain falls for 17 days and regularly aggregates up to 2.44" (62mm) of precipitation. In Long Lake, during the entire year, the rain falls for 142.3 days and collects up to 21.97" (558mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows in Long Lake, Illinois. During 0.2 snowfall days, in May, Long Lake aggregates 0.04" (1mm) of snow. In Long Lake, during the entire year, snow falls for 49.5 days and aggregates up to 13.54" (344mm) of snow.

Daylight

The average length of the day in May in Long Lake is 14h and 37min.
On the first day of May in Long Lake, sunrise is at 5:46 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:18 am and sunset at 8:22 pm CDT.

Sunshine

In Long Lake, the average sunshine in May is 8.5h.

UV index

In May, the average daily maximum UV index in Long Lake, Illinois, is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the UV index of 5 transforms into the following advice:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
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Frequently asked questions

What is the temperature in May in Long Lake?

In Long Lake, 65.3°F (18.5°C) is the average high-temperature and 49.6°F (9.8°C) is the average low-temperature during May.

What is the average humidity in May in Long Lake?

In May, the average relative humidity in Long Lake, Illinois, is 78%.

How many days does it rain in May in Long Lake?

In May, in Long Lake, the rain falls for 17 days. Throughout May, 2.44" (62mm) of precipitation is accumulated.

What is the last month it snows in Long Lake?

May is the last month it regularly snows in Long Lake, Illinois. During 0.2 snowfall days, in May, Long Lake aggregates 0.04" (1mm) of snow.

How many hours of daylight does Long Lake have in May?

The average day length in May in Long Lake is 14h and 37min.

When is the sunrise / sunset in May in Long Lake?

In May, on the first day of the month, sunrise is at 5:46 am and sunset at 7:52 pm. On the last day of the month, in Long Lake, sunrise is at 5:18 am and sunset at 8:22 pm CDT.

How long on average sun shines in May in Long Lake?

In Long Lake, Illinois, the average sunshine duration in May is 8.5h.

How high is the UV index in May in Long Lake?

In Long Lake, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Long Lake, IL

Average temperature in May - Long Lake, IL
  • Average high temperature in May: 65.3°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 (27.5°F).

  • Average low temperature in May: 49.6°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 (16.5°F).

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Average pressure in May
Long Lake, IL

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

The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in May
Long Lake, IL

Average wind speed in May - Long Lake, IL
  • Average wind speed in May: 8.4mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

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Average humidity in May
Long Lake, IL

Average humidity in May - Long Lake, IL
  • Average humidity in May: 78%

The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in May
Long Lake, IL

Average rainfall in May - Long Lake, IL
  • Average rainfall in May: 2.44"

The wettest month (with the highest rainfall) is April (2.72").
The driest month (with the least rainfall) is December (0.98").

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Average rainfall days in May
Long Lake, IL

Average rainfall days in May - Long Lake, IL
  • Average rainfall days in May: 17 days

The month with the highest number of rainy days is July (17.5 days).
The month with the least rainy days is February (5 days).

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Average snowfall in May
Long Lake, IL

Average snowfall in May - Long Lake, IL
  • Average snowfall in May: 0.04"

The month with the highest snowfall is January (3.58").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Long Lake, IL

Average snowfall days in May - Long Lake, IL
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
Long Lake, IL

Average daylight in May / Average sunshine in May - Long Lake, 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 6min).

  • Average sunshine in May: 8h and 3min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in May
Long Lake, IL

Average sunshine days in May - Long Lake, IL
  • Average sunshine days in May: 10.8 days

The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is May (10.8 days).

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Average UV index in May
Long Lake, IL

Average UV index in May - Long Lake, IL
  • Average UV index in May: 5

The months with the highest UV index are July and August (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
Long Lake, IL

Average cloud cover in May - Long Lake, IL
  • Average cloud cover in May: 43

The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 30).

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Average visibility in May
Long Lake, IL

Average visibility in May - Long Lake, IL
  • Average visibility in May: 6mi

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

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Long Lake, Illinois, USA

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