May weather forecast
Decatur, AR

Share

Weather in May

The last month of the spring, May, is a moderately hot month in Decatur, Arkansas, with an average temperature fluctuating between 57.6°F (14.2°C) and 76.6°F (24.8°C).

Temperature

The arrival of May brings a soft temperature shift, with the average high-temperature nudging from an agreeable 68.4°F (20.2°C) in April to a moderately hot 76.6°F (24.8°C). During the month of May, Decatur anticipates a mean low-temperature of 57.6°F (14.2°C).

Humidity

May is the most humid month, with an average relative humidity of 77%.

Rainfall

May is the month with the most rainfall. Rain falls for 15.5 days and accumulates 4.37" (111mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall. May is the last month it regularly snows. During 0.3 snowfall days, in May, Decatur aggregates 0.12" (3mm) of snow. Throughout the year, there are 13.9 snowfall days, and 4.8" (122mm) of snow is accumulated.

Daylight

The average length of the day in May is 14h and 7min.
On the first day of May, sunrise is at 6:23 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 8:29 pm CDT.

Sunshine

The average sunshine in May is 8.9h.

UV index

The average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index of 6 during May leads to these instructions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Updated: Jul 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May?

In May, in Decatur, the average high-temperature is 76.6°F (24.8°C), and the average low-temperature is 57.6°F (14.2°C).

What is the most humid month?

With an average relative humidity of 77%, May is the most humid month in Decatur.

What is the average humidity in May in Decatur?

The average relative humidity in May is 77%.

What is the rainiest month?

The month with the most rainfall is May, when the rain falls for 15.5 days and typically aggregates up to 4.37" (111mm) of precipitation.

How many days does it rain in May?

In May, the rain falls for 15.5 days. Throughout May, 4.37" (111mm) of precipitation is accumulated.

What is the last month it snows?

May is the last month it regularly snows. During 0.3 snowfall days, in May, Decatur aggregates 0.12" (3mm) of snow.

How many hours of daylight does Decatur have in May?

In Decatur, the average day length in May is 14h and 7min.

When are sunrise and sunset in May in Decatur?

On the first day of May, sunrise is at 6:23 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 8:29 pm CDT.

How many hours of sunshine does Decatur have in May?

In May, the average sunshine duration is 8.9h.

What is the UV index reading in May?

In Decatur, the average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high health risk 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
Decatur, AR

Average temperature in May - Decatur, AR
  • Average high temperature in May: 76.6°F

The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (44.4°F).

  • Average low temperature in May: 57.6°F

The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).

Average pressure in May
Decatur, AR

Average pressure in May - Decatur, AR
  • Average pressure in May: 29.95"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are April and June (29.93"Hg).

Average wind speed in May
Decatur, AR

Average wind speed in May - Decatur, AR
  • Average wind speed in May: 8.9mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).

Average humidity in May
Decatur, AR

Average humidity in May - Decatur, AR
  • Average humidity in May: 77%

The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is October (70%).

Average rainfall in May
Decatur, AR

Average rainfall in May - Decatur, AR
  • Average rainfall in May: 4.37"

The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is February (1.89").

Average rainfall days in May
Decatur, AR

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

The month with the highest number of rainy days is May (15.5 days).
The months with the least rainy days are January and November (8.5 days).

Average snowfall in May
Decatur, AR

Average snowfall in May - Decatur, AR
  • Average snowfall in May: 0.12"

The month with the highest snowfall is February (1.46").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in May
Decatur, AR

Average snowfall days in May - Decatur, AR
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is February (4.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Decatur, AR
  • Average daylight in May: 14h and 1min

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

  • Average sunshine in May: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).

Average sunshine days in May
Decatur, AR

Average sunshine days in May - Decatur, AR
  • Average sunshine days in May: 14.5 days

The month with the most sunshine days is December (19.2 days).
The months with the least sunshine days are March and April (13.3 days).

Average UV index in May
Decatur, AR

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

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

Average cloud cover in May
Decatur, AR

Average cloud cover in May - Decatur, AR
  • Average cloud cover in May: 38

The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 24).

Average visibility in May
Decatur, AR

Average visibility in May - Decatur, AR
  • 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).

Decatur, Arkansas, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location