May weather forecast
Genoa, IL

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Weather in May

The last month of the spring, May, is a pleasant month in Genoa, Illinois, with an average temperature fluctuating between 68.4°F (20.2°C) and 50.9°F (10.5°C).

Temperature

As Genoa welcomes May, the average high-temperature sees a rise, transitioning from a refreshing 55.9°F (13.3°C) in April to an agreeable 68.4°F (20.2°C). The average temperature during May nights dips to a cool 50.9°F (10.5°C).

Humidity

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

Rainfall

In Genoa, in May, during 15.1 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. Throughout the year, there are 116.8 rainfall days, and 11.69" (297mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Genoa, Illinois, the average length of the day in May is 14h and 35min.
On the first day of the month, sunrise is at 5:49 am and sunset at 7:54 pm. On the last day of May, sunrise is at 5:21 am and sunset at 8:23 pm CDT.

Sunshine

In May, the average sunshine is 8.3h.

UV index

In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: In May, the maximum UV index of 5 translates into these guidelines:
Heed the precautions - It is counselled to guard against solar damage. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Boost your sun resistance with garments that are densely woven yet spacious. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Updated: Aug 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Genoa in May?

In May, the average high-temperature and low-temperature are 68.4°F (20.2°C) and 50.9°F (10.5°C) respectively.

What is the average humidity in May?

In May, the average relative humidity is 78%.

How much does it rain in May?

In Genoa, during May, the rain falls for 15.1 days and regularly aggregates up to 1.73" (44mm) of precipitation.

When it does not snow?

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

Does it snow in May?

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

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

The average day length in May is 14h and 35min.

What time are sunrise and sunset in May?

On the first day of May, sunrise is at 5:49 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:21 am and sunset at 8:23 pm CDT.

How long on average sun shines in May?

In May, the average sunshine duration is 8.3h.

How high is the UV index in May?

The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from unprotected exposure to 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
Genoa, IL

Average temperature in May - Genoa, IL
  • Average high temperature in May: 68.4°F

The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (26.8°F).

  • Average low temperature in May: 50.9°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 (14.2°F).

Average pressure in May
Genoa, IL

Average pressure in May - Genoa, 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).

Average wind speed in May
Genoa, IL

Average wind speed in May - Genoa, IL
  • Average wind speed in May: 8.5mph

The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

Average humidity in May
Genoa, IL

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

The months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is October (75%).

Average rainfall in May
Genoa, IL

Average rainfall in May - Genoa, IL
  • Average rainfall in May: 1.73"

The wettest month (with the highest rainfall) is June (1.81").
The driest month (with the least rainfall) is February (0.47").

Average rainfall days in May
Genoa, IL

Average rainfall days in May - Genoa, IL
  • Average rainfall days in May: 15.1 days

The months with the highest number of rainy days are May and June (15.1 days).
The month with the least rainy days is February (3.5 days).

Average snowfall in May
Genoa, IL

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

The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in May
Genoa, IL

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

The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Genoa, IL

Average daylight in May / Average sunshine in May - Genoa, 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 2min

The months with the most sunshine are June, July and August (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

Average sunshine days in May
Genoa, IL

Average sunshine days in May - Genoa, IL
  • Average sunshine days in May: 13.3 days

The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is June (11.2 days).

Average UV index in May
Genoa, IL

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

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

Average cloud cover in May
Genoa, IL

Average cloud cover in May - Genoa, IL
  • Average cloud cover in May: 44

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 35).

Average visibility in May
Genoa, IL

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

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

Genoa, Illinois, USA

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