May weather forecastPenfield, IL

May

Weather in May

May, the last month of the spring in Penfield, is an agreeable month, with an average temperature ranging between max 72.1°F (22.3°C) and min 55.6°F (13.1°C).

Temperature

May brings a rise in the average high-temperature, transitioning from April's enjoyable 60.8°F (16°C) to an agreeable 72.1°F (22.3°C). During the nights in May, Penfield experiences a consistent average temperature of 55.6°F (13.1°C).

Humidity

In May, the average relative humidity is 76%.

Rainfall

May is the month with the most rainfall. Rain falls for 14.8 days and accumulates 1.77" (45mm) of precipitation.

Snowfall

In Penfield, snow does not fall in May through October.

Daylight

In May, the average length of the day is 14h and 26min.
On the first day of the month, sunrise is at 5:50 am and sunset at 7:47 pm. On the last day of May, in Penfield, sunrise is at 5:24 am and sunset at 8:15 pm CDT.

Sunshine

In Penfield, Illinois, the average sunshine in May is 9h.

UV index

The average daily maximum UV index in May in Penfield is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 5 in May converts into the following recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In May, the average high-temperature and low-temperature in Penfield, Illinois, are 72.1°F (22.3°C) and 55.6°F (13.1°C) respectively.

In May, the average relative humidity in Penfield is 76%.

May is the month with the most rainfall in Penfield, Illinois. Rain falls for 14.8 days and accumulates 1.77" (45mm) of precipitation.

In Penfield, in May, during 14.8 rainfall days, 1.77" (45mm) of precipitation is typically accumulated.

May through October are months without snowfall in Penfield.

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

In May, the average day length in Penfield, Illinois, is 14h and 26min.

On the first day of May in Penfield, Illinois, sunrise is at 5:50 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 5:24 am and sunset at 8:15 pm CDT.

The average sunshine duration in May in Penfield is 9h.

In May, the average daily maximum UV index in Penfield is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Penfield, IL

  • Average high temperature in May: 72.1°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.5°F).

  • Average low temperature in May: 55.6°F

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure in May
Penfield, IL

  • Average pressure in May: 29.96"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in May
Penfield, IL

  • Average wind speed in May: 8.9mph

The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

Average humidity in May
Penfield, IL

  • Average humidity in May: 76%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).

Average rainfall in May
Penfield, IL

  • Average rainfall in May: 1.77"

The wettest month (with the highest rainfall) is May (1.77").
The driest month (with the least rainfall) is February (0.67").

Average rainfall days in May
Penfield, IL

  • Average rainfall days in May: 14.8 days

The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is February (4.6 days).

Average snowfall in May
Penfield, IL

  • Average snowfall in May: 0"

The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in May
Penfield, IL

  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

  • Average daylight in May: 14h and 24min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in May: 9h and 0min

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in May
Penfield, IL

  • Average sunshine days in May: 13.2 days

The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is July (11.3 days).

Average UV index in May
Penfield, IL

  • Average UV index in May: 5

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in May
Penfield, IL

  • Average cloud cover in May: 40

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in May
Penfield, IL

  • Average visibility in May: 6mi

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