May weather forecast
Deer Park, IL

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Weather in May

May, the last month of the spring in Deer Park, is a comfortable month, with temperature in the range of an average high of 66.4°F (19.1°C) and an average low of 50.2°F (10.1°C).

Temperature

The commencement of May sees a shift in the average high-temperature, moving from a cool 54.3°F (12.4°C) in April to a refreshing 66.4°F (19.1°C). An average low-temperature of 50.2°F (10.1°C) is noted during the month of May.

Humidity

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

Rainfall

In Deer Park, Illinois, in May, it is raining for 20 days, with typically 4.06" (103mm) of accumulated precipitation. In Deer Park, Illinois, during the entire year, the rain falls for 163.1 days and collects up to 32.24" (819mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows in Deer Park. During 0.2 snowfall days, in May, Deer Park aggregates 0.08" (2mm) of snow. Throughout the year, there are 55.5 snowfall days, and 22.95" (583mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 36min.
On the first day of May, sunrise is at 5:46 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:18 am and sunset at 8:21 pm CDT.

Sunshine

The average sunshine in May in Deer Park, Illinois, is 8.5h.

UV index

In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: An average UV index of 5 in May transforms into this advice:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
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Frequently asked questions

What is the average May temperature in Deer Park?

In Deer Park, 66.4°F (19.1°C) is the average high-temperature and 50.2°F (10.1°C) is the average low-temperature during May.

What is the average humidity in May in Deer Park?

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

How many days does it rain in May in Deer Park?

In Deer Park, Illinois, in May, it is raining for 20 days, with typically 4.06" (103mm) of accumulated precipitation.

What is the last month it snows in Deer Park?

May is the last month it regularly snows in Deer Park, Illinois. During 0.2 snowfall days, in May, Deer Park aggregates 0.08" (2mm) of snow.

How many hours of daylight does Deer Park have in May?

The average day length in May in Deer Park, Illinois, is 14h and 36min.

What time are sunrise and sunset in May in Deer Park?

In May, on the first day of the month, sunrise is at 5:46 am and sunset at 7:51 pm. On the last day of the month, in Deer Park, Illinois, sunrise is at 5:18 am and sunset at 8:21 pm CDT.

How long on average sun shines in May in Deer Park?

The average sunshine duration in May is 8.5h.

What is the UV index intensity in May in Deer Park?

In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from 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
Deer Park, IL

Average temperature in May - Deer Park, IL
  • Average high temperature in May: 66.4°F

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (27.7°F).

  • Average low temperature in May: 50.2°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).

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Average pressure in May
Deer Park, IL

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

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in May
Deer Park, IL

Average wind speed in May - Deer Park, IL
  • Average wind speed in May: 8.3mph

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in May
Deer Park, IL

Average humidity in May - Deer Park, IL
  • Average humidity in May: 77%

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
Deer Park, IL

Average rainfall in May - Deer Park, IL
  • Average rainfall in May: 4.06"

The wettest month (with the highest rainfall) is June (4.13").
The driest month (with the least rainfall) is November (1.61").

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Average rainfall days in May
Deer Park, IL

Average rainfall days in May - Deer Park, IL
  • Average rainfall days in May: 20 days

The month with the highest number of rainy days is May (20 days).
The month with the least rainy days is February (5.7 days).

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Average snowfall in May
Deer Park, IL

Average snowfall in May - Deer Park, IL
  • Average snowfall in May: 0.08"

The month with the highest snowfall is February (6.22").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Deer Park, IL

Average snowfall days in May - Deer Park, IL
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is January (15.5 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
Deer Park, IL

Average daylight in May / Average sunshine in May - Deer Park, 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 months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in May
Deer Park, IL

Average sunshine days in May - Deer Park, IL
  • Average sunshine days in May: 8.5 days

The month with the most sunshine days is November (15.5 days).
The month with the least sunshine days is June (8.4 days).

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Average UV index in May
Deer Park, IL

Average UV index in May - Deer Park, 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
Deer Park, IL

Average cloud cover in May - Deer Park, 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 31).

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Average visibility in May
Deer Park, IL

Average visibility in May - Deer Park, IL
  • Average visibility in May: 6mi

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

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Deer Park, Illinois, USA

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