May weather forecast
Somonauk, IL

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Weather in May

The last month of the spring, May, is a pleasant month in Somonauk, Illinois, with an average temperature fluctuating between 69.3°F (20.7°C) and 52.2°F (11.2°C).

Temperature

Somonauk in May experiences an increase in the average high-temperature, moving from April's refreshing 57°F (13.9°C) to an agreeable 69.3°F (20.7°C). Somonauk sees an average low-temperature of 52.2°F (11.2°C) during May.

Humidity

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

Rainfall

May is the month with the most rainfall. Rain falls for 18.9 days and accumulates 4.49" (114mm) of precipitation.

Snowfall

In Somonauk, snow does not fall in May through September.

Daylight

In May, the average length of the day in Somonauk is 14h and 33min.
On the first day of the month, sunrise is at 5:50 am and sunset at 7:53 pm. On the last day of May, in Somonauk, Illinois, sunrise is at 5:22 am and sunset at 8:22 pm CDT.

Sunshine

In May, the average sunshine is 8.6h.

UV index

The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high daily UV index of 5 during May translates into the following directions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
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Frequently asked questions

What is the average May temperature in Somonauk?

The average high-temperature, in May, in Somonauk, is 69.3°F (20.7°C), while the average low-temperature is 52.2°F (11.2°C).

What is the average humidity in May in Somonauk?

The average relative humidity in May in Somonauk, Illinois, is 78%.

What is the rainiest month in Somonauk?

The month with the most rainfall in Somonauk is May, when the rain falls for 18.9 days and typically aggregates up to 4.49" (114mm) of precipitation.

How much does it rain in Somonauk in May?

In May, the rain falls for 18.9 days. Throughout May, 4.49" (114mm) of precipitation is accumulated.

When it does not snow in Somonauk?

May through September are months without snowfall in Somonauk.

Does it snow in Somonauk in May?

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

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

The average day length in May in Somonauk, Illinois, is 14h and 33min.

What time are sunrise and sunset in May in Somonauk?

On the first day of May, sunrise is at 5:50 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:22 am and sunset at 8:22 pm CDT.

How many hours of sunshine does Somonauk have in May?

In May, the average sunshine duration in Somonauk, Illinois, is 8.6h.

What is the UV index reading in May in Somonauk?

The average daily maximum UV index in May in Somonauk, Illinois, is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability 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
Somonauk, IL

Average temperature in May - Somonauk, IL
  • Average high temperature in May: 69.3°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 (27.5°F).

  • Average low temperature in May: 52.2°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).

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Average pressure in May
Somonauk, IL

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

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in May
Somonauk, IL

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

The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6mph).

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Average humidity in May
Somonauk, IL

Average humidity in May - Somonauk, IL
  • Average humidity in May: 78%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in May
Somonauk, IL

Average rainfall in May - Somonauk, IL
  • Average rainfall in May: 4.49"

The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is January (1.69").

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Average rainfall days in May
Somonauk, IL

Average rainfall days in May - Somonauk, IL
  • Average rainfall days in May: 18.9 days

The months with the highest number of rainy days are June and July (19.3 days).
The month with the least rainy days is January (5.5 days).

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Average snowfall in May
Somonauk, IL

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

The month with the highest snowfall is January (4.61").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
Somonauk, IL

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

The month with the highest number of snowfall days is January (12.3 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
Somonauk, IL

Average daylight in May / Average sunshine in May - Somonauk, IL
  • Average daylight in May: 14h and 4min

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 12min).

  • Average sunshine in May: 8h and 4min

The months with the most sunshine are June, July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

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Average sunshine days in May
Somonauk, IL

Average sunshine days in May - Somonauk, IL
  • Average sunshine days in May: 9.7 days

The month with the most sunshine days is November (17 days).
The month with the least sunshine days is July (8.2 days).

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Average UV index in May
Somonauk, IL

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

The months with the highest UV index are June 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
Somonauk, IL

Average cloud cover in May - Somonauk, 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
Somonauk, IL

Average visibility in May - Somonauk, IL
  • Average visibility in May: 6mi

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

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Somonauk, Illinois, USA

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