May weather forecast
Sunnyside, IL

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Weather in May

The last month of the spring, May, is a comfortable month in Sunnyside, Illinois, with temperature in the range of an average low of 49.3°F (9.6°C) and an average high of 66.4°F (19.1°C).

Temperature

The onset of May brings a rise in the average high-temperature, elevating from a fresh 54.3°F (12.4°C) in April to an enjoyable 66.4°F (19.1°C). In Sunnyside, May nights cool down to an average of 49.3°F (9.6°C).

Humidity

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

Rainfall

In Sunnyside, in May, it is raining for 17.8 days, with typically 3.39" (86mm) of accumulated precipitation. In Sunnyside, during the entire year, the rain falls for 152.4 days and collects up to 28.07" (713mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, in May, Sunnyside aggregates 0.08" (2mm) of snow. Throughout the year, there are 49 snowfall days, and 16.5" (419mm) of snow is accumulated.

Daylight

In Sunnyside, the average length of the day in May is 14h and 37min.
On the first day of May in Sunnyside, sunrise is at 5:46 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:18 am and sunset at 8:22 pm CDT.

Sunshine

In May, the average sunshine in Sunnyside, Illinois, is 8.5h.

UV index

In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index, 5 during May, leads to the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
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Frequently asked questions

What are May temperatures in Sunnyside?

The average high-temperature, in May, in Sunnyside, is 66.4°F (19.1°C), while the average low-temperature is 49.3°F (9.6°C).

What is the average humidity in May in Sunnyside?

The average relative humidity in May in Sunnyside, Illinois, is 79%.

How many days does it rain in May in Sunnyside?

In May, in Sunnyside, the rain falls for 17.8 days. Throughout May, 3.39" (86mm) of precipitation is accumulated.

What is the last month it snows in Sunnyside?

May is the last month it regularly snows in Sunnyside. During 0.1 snowfall days, in May, Sunnyside aggregates 0.08" (2mm) of snow.

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

In May, the average day length in Sunnyside, Illinois, is 14h and 37min.

What time are sunrise and sunset in May in Sunnyside?

On the first day of May in Sunnyside, sunrise is at 5:46 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:18 am and sunset at 8:22 pm CDT.

How many hours of sunshine does Sunnyside have in May?

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

What is the UV index intensity in May in Sunnyside?

The average daily maximum UV index in May in Sunnyside 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 days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Sunnyside, IL

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

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (26.6°F).

  • Average low temperature in May: 49.3°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).

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Average pressure in May
Sunnyside, IL

Average pressure in May - Sunnyside, 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
Sunnyside, IL

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

The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in May
Sunnyside, IL

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

The months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is October (76%).

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Average rainfall in May
Sunnyside, IL

Average rainfall in May - Sunnyside, IL
  • Average rainfall in May: 3.39"

The wettest month (with the highest rainfall) is June (3.58").
The driest month (with the least rainfall) is December (1.34").

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Average rainfall days in May
Sunnyside, IL

Average rainfall days in May - Sunnyside, IL
  • Average rainfall days in May: 17.8 days

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (4.9 days).

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Average snowfall in May
Sunnyside, IL

Average snowfall in May - Sunnyside, IL
  • Average snowfall in May: 0.08"

The month with the highest snowfall is January (5.16").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Sunnyside, IL

Average snowfall days in May - Sunnyside, IL
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (13.3 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
Sunnyside, IL

Average daylight in May / Average sunshine in May - Sunnyside, 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 months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in May
Sunnyside, IL

Average sunshine days in May - Sunnyside, IL
  • Average sunshine days in May: 11 days

The month with the most sunshine days is November (16 days).
The month with the least sunshine days is June (10.2 days).

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Average UV index in May
Sunnyside, IL

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

The month with the highest UV index is 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
Sunnyside, IL

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

The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 31).

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Average visibility in May
Sunnyside, IL

Average visibility in May - Sunnyside, 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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Sunnyside, Illinois, USA

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