May weather forecast
Knoxville, AR

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Weather in May

The last month of the spring, May, is a warm month in Knoxville, Arkansas, with temperature in the range of an average low of 57.7°F (14.3°C) and an average high of 77.9°F (25.5°C).

Temperature

As Knoxville welcomes May, the average high-temperature displays a subtle shift, adjusting from a pleasant 69.1°F (20.6°C) in April to a warm 77.9°F (25.5°C). An average temperature of 57.7°F (14.3°C) marks the nights in May.

Humidity

March and May, with an average relative humidity of 79%, are the most humid months.

Rainfall

The wettest months are April and May, with an average 4.41" (112mm) of rainfall.

Snowfall

In Knoxville, snow does not fall in April through October.

Daylight

In May, the average length of the day is 14h and 2min.
On the first day of May, sunrise is at 6:20 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 8:22 pm CDT.

Sunshine

In Knoxville, Arkansas, the average sunshine in May is 8.6h.

UV index

In Knoxville, Arkansas, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: In May, the maximum UV index of 6 suggests these recommendations:
Deflect overexposure. Sun protection is a necessity. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Updated: Jul 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature?

In May, in Knoxville, the average high-temperature is 77.9°F (25.5°C), and the average low-temperature is 57.7°F (14.3°C).

What are the most humid months?

The months with the highest humidity are March and May, with an average relative humidity of 79%.

What is the average humidity in May?

In Knoxville, the average relative humidity in May is 79%.

What is the rainiest month?

The months with the most rainfall are April and May, with an average 4.41" (112mm) of precipitation.

How much does it rain in Knoxville in May?

In May, the rain falls for 15.5 days. Throughout May, 4.41" (112mm) of precipitation is accumulated.

When it does not snow?

April through October are months without snowfall.

How many hours of daylight does Knoxville have in May?

The average day length in May is 14h and 2min.

When is the sunrise / sunset in May?

In May, on the first day of the month, sunrise is at 6:20 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 8:22 pm CDT.

How long on average sun shines in May?

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

What is the UV index reading in May?

In May, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes 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
Knoxville, AR

Average temperature in May - Knoxville, AR
  • Average high temperature in May: 77.9°F

The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (46.9°F).

  • Average low temperature in May: 57.7°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

Average pressure in May
Knoxville, AR

Average pressure in May - Knoxville, AR
  • Average pressure in May: 29.96"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in May
Knoxville, AR

Average wind speed in May - Knoxville, AR
  • Average wind speed in May: 5.3mph

The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are July and August (4.2mph).

Average humidity in May
Knoxville, AR

Average humidity in May - Knoxville, AR
  • Average humidity in May: 79%

The months with the highest relative humidity are March and May (79%).
The months with the lowest relative humidity are July and August (72%).

Average rainfall in May
Knoxville, AR

Average rainfall in May - Knoxville, AR
  • Average rainfall in May: 4.41"

The wettest months (with the highest rainfall) are April and May (4.41").
The driest months (with the least rainfall) are July and September (2.36").

Average rainfall days in May
Knoxville, AR

Average rainfall days in May - Knoxville, AR
  • Average rainfall days in May: 15.5 days

The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is November (9 days).

Average snowfall in May
Knoxville, AR

Average snowfall in May - Knoxville, AR
  • Average snowfall in May: 0"

The months with the highest snowfall are January and February (0.79").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in May
Knoxville, AR

Average snowfall days in May - Knoxville, AR
  • Average snowfall days in May: 0 days

The months with the highest number of snowfall days are January and February (1.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in May /
Average sunshine in May
Knoxville, AR

Average daylight in May / Average sunshine in May - Knoxville, AR
  • Average daylight in May: 14h and 0min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in May: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).

Average sunshine days in May
Knoxville, AR

Average sunshine days in May - Knoxville, AR
  • Average sunshine days in May: 13.2 days

The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is May (13.2 days).

Average UV index in May
Knoxville, AR

Average UV index in May - Knoxville, AR
  • Average UV index in May: 6

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).

Average cloud cover in May
Knoxville, AR

Average cloud cover in May - Knoxville, AR
  • Average cloud cover in May: 41

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 28).

Average visibility in May
Knoxville, AR

Average visibility in May - Knoxville, AR
  • Average visibility in May: 5mi

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

Knoxville, Arkansas, USA

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