May weather forecast
Jonesboro, IL

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Weather in May

The last month of the spring, May, is a warm month in Jonesboro, Illinois, with an average temperature fluctuating between 58.1°F (14.5°C) and 75.7°F (24.3°C).

Temperature

May sees a rise in the average high-temperature, climbing from a refreshing 66.6°F (19.2°C) in April to a warm 75.7°F (24.3°C). The average temperature during May nights dips to a mild 58.1°F (14.5°C).

Humidity

With an average relative humidity of 79%, May is the most humid month.

Rainfall

In May, the rain falls for 14.9 days. Throughout May, 2.95" (75mm) of precipitation is accumulated. In Jonesboro, during the entire year, the rain falls for 143 days and collects up to 27.44" (697mm) of precipitation.

Snowfall

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

Daylight

In May, the average length of the day is 14h and 12min.
On the first day of May, sunrise is at 6:00 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:12 pm CDT.

Sunshine

In May, the average sunshine is 9.1h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum high UV index of 6 in May translates into the following recommendations:
Shield from overexposure. Defense against sun-related harm is required. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Updated: Jun 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature in Jonesboro?

Jonesboro in May has an average high-temperature of 75.7°F (24.3°C) and an average low-temperature of 58.1°F (14.5°C).

What is the most humid month?

The most humid month in Jonesboro, Illinois, is May, with an average relative humidity of 79%.

What is the average humidity in May?

The average relative humidity in May is 79%.

How much does it rain in May?

In May, the rain falls for 14.9 days. Throughout May, 2.95" (75mm) of precipitation is accumulated.

When it does not snow?

In Jonesboro, Illinois, 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.

How many hours of daylight does Jonesboro have in May?

In May, the average day length is 14h and 12min.

When is the sunrise / sunset in May?

On the first day of May, sunrise is at 6:00 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:12 pm CDT.

How long on average sun shines in May?

In May, the average sunshine duration is 9.1h.

When is the highest UV index in Jonesboro?

May through August, with an average maximum UV index of 6, are months with the highest UV index.

How high is the UV index in May?

In May, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health threat from exposure to Sun's UV rays.
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
Jonesboro, IL

Average temperature in May - Jonesboro, IL
  • Average high temperature in May: 75.7°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in May: 58.1°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).

Average pressure in May
Jonesboro, IL

Average pressure in May - Jonesboro, IL
  • Average pressure in May: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in May
Jonesboro, IL

Average wind speed in May - Jonesboro, IL
  • Average wind speed in May: 7.3mph

The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

Average humidity in May
Jonesboro, IL

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

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).

Average rainfall in May
Jonesboro, IL

Average rainfall in May - Jonesboro, IL
  • Average rainfall in May: 2.95"

The wettest month (with the highest rainfall) is April (3.31").
The driest month (with the least rainfall) is September (1.3").

Average rainfall days in May
Jonesboro, IL

Average rainfall days in May - Jonesboro, IL
  • Average rainfall days in May: 14.9 days

The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is January (8.4 days).

Average snowfall in May
Jonesboro, IL

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

The month with the highest snowfall is February (1.89").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in May
Jonesboro, IL

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

The month with the highest number of snowfall days is January (4.6 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
Jonesboro, IL

Average daylight in May / Average sunshine in May - Jonesboro, IL
  • Average daylight in May: 14h and 1min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in May: 9h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).

Average sunshine days in May
Jonesboro, IL

Average sunshine days in May - Jonesboro, IL
  • Average sunshine days in May: 13.8 days

The month with the most sunshine days is October (21 days).
The month with the least sunshine days is July (12.8 days).

Average UV index in May
Jonesboro, IL

Average UV index in May - Jonesboro, IL
  • Average UV index in May: 6

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

Average cloud cover in May
Jonesboro, IL

Average cloud cover in May - Jonesboro, IL
  • Average cloud cover in May: 40

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is September (Cloud cover 28).

Average visibility in May
Jonesboro, IL

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

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

Jonesboro, Illinois, USA

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