May weather forecast
Plainfield, IL

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Weather in May

May, the last month of the spring in Plainfield, is a pleasant month, with an average temperature varying between 52.3°F (11.3°C) and 70.3°F (21.3°C).

Temperature

May sees a temperature increase, moving from a refreshing 58.1°F (14.5°C) in April to a pleasant 70.3°F (21.3°C). Throughout the month of May, Plainfield sees a steady low-temperature average of 52.3°F (11.3°C).

Humidity

The average relative humidity in May is 77%.

Rainfall

May is the month with the most rainfall. Rain falls for 17.8 days and accumulates 4.41" (112mm) of precipitation.

Snowfall

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

Daylight

In Plainfield, Illinois, the average length of the day in May is 14h and 33min.
On the first day of the month, sunrise is at 5:48 am and sunset at 7:51 pm. On the last day of May, in Plainfield, sunrise is at 5:20 am and sunset at 8:20 pm CDT.

Sunshine

The average sunshine in May is 8.5h.

UV index

In Plainfield, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 5 during May translates into the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Plainfield in May?

An average high-temperature, in May, in Plainfield, is 70.3°F (21.3°C) and the average low-temperature is 52.3°F (11.3°C).

What is the average humidity in May in Plainfield?

The average relative humidity in May is 77%.

What is the rainiest month in Plainfield?

The month with the most rainfall in Plainfield is May, when the rain falls for 17.8 days and typically aggregates up to 4.41" (112mm) of precipitation.

How much does it rain in Plainfield in May?

In Plainfield, Illinois, in May, during 17.8 rainfall days, 4.41" (112mm) of precipitation is typically accumulated.

When it does not snow in Plainfield?

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

Does it snow in Plainfield in May?

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

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

In Plainfield, the average day length in May is 14h and 33min.

When are sunrise and sunset in May in Plainfield?

On the first day of May, sunrise is at 5:48 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:20 am and sunset at 8:20 pm CDT.

How many hours of sunshine does Plainfield have in May?

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

How high is the UV index in May in Plainfield?

In May, the average daily maximum UV index in Plainfield is 5. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Plainfield, IL

Average temperature in May - Plainfield, IL
  • Average high temperature in May: 70.3°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (29.3°F).

  • Average low temperature in May: 52.3°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 (17.4°F).

Average pressure in May
Plainfield, IL

Average pressure in May - Plainfield, 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).

Average wind speed in May
Plainfield, IL

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

The windiest month (with the highest average wind speed) is April (9.7mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).

Average humidity in May
Plainfield, IL

Average humidity in May - Plainfield, IL
  • Average humidity in May: 77%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (73%).

Average rainfall in May
Plainfield, IL

Average rainfall in May - Plainfield, IL
  • Average rainfall in May: 4.41"

The wettest month (with the highest rainfall) is May (4.41").
The driest month (with the least rainfall) is February (1.61").

Average rainfall days in May
Plainfield, IL

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

The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is February (5.7 days).

Average snowfall in May
Plainfield, IL

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

The month with the highest snowfall is January (4.33").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in May
Plainfield, IL

Average snowfall days in May - Plainfield, IL
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (11.9 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
Plainfield, IL

Average daylight in May / Average sunshine in May - Plainfield, 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 3min

The month with the most sunshine is August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in May
Plainfield, IL

Average sunshine days in May - Plainfield, IL
  • Average sunshine days in May: 11.6 days

The month with the most sunshine days is November (18.1 days).
The month with the least sunshine days is June (10.4 days).

Average UV index in May
Plainfield, IL

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

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

Average cloud cover in May
Plainfield, IL

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

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).

Average visibility in May
Plainfield, IL

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

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

Plainfield, Illinois, USA

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