May weather forecast
Portland, AR

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Weather in May

May, the last month of the spring in Portland, is a moderately hot month, with an average temperature ranging between min 64.8°F (18.2°C) and max 81.5°F (27.5°C).

Temperature

A subtle rise in the average high-temperature is observed during May, adjusting from an agreeable 73°F (22.8°C) in April to a warm 81.5°F (27.5°C). Throughout the nights in May, an average low-temperature of 64.8°F (18.2°C) is noted.

Heat index

The heat index for May is estimated at a tropical 86°F (30°C). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.
Heat index evaluations are typically in the context of light winds and shaded environments. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is found by incorporating humidity levels into the air temperature measurement. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.

Humidity

In May, the average relative humidity in Portland is 74%.

Rainfall

In Portland, Arkansas, during May, the rain falls for 15.1 days and regularly aggregates up to 3.35" (85mm) of precipitation. Throughout the year, there are 158.8 rainfall days, and 40.67" (1033mm) of precipitation is accumulated.

Snowfall

In Portland, snow does not fall in April through October and December.

Daylight

In May, the average length of the day in Portland, Arkansas, is 13h and 53min.
On the first day of the month, sunrise is at 6:17 am and sunset at 7:48 pm. On the last day of May, in Portland, sunrise is at 5:57 am and sunset at 8:10 pm CDT.

Sunshine

In May, the average sunshine is 9.9h.

UV index

In Portland, the average daily maximum UV index in May is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 6 in May transforms into the following instructions:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
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Frequently asked questions

What is the temperature in May in Portland?

The high-temperature in Portland, Arkansas, during May is 81.5°F (27.5°C) and the low-temperature is 64.8°F (18.2°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, in May is estimated at 86°F (30°C).

What is the average humidity in May in Portland?

The average relative humidity in May in Portland, Arkansas, is 74%.

How much does it rain in Portland in May?

In Portland, in May, it is raining for 15.1 days, with typically 3.35" (85mm) of accumulated precipitation.

When it does not snow in Portland?

In Portland, Arkansas, snow does not fall in April through October and December.

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

In May, the average day length in Portland is 13h and 53min.

When is the sunrise / sunset in May in Portland?

On the first day of May in Portland, Arkansas, sunrise is at 6:17 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 5:57 am and sunset at 8:10 pm CDT.

How long on average sun shines in May in Portland?

In Portland, Arkansas, the average sunshine duration in May is 9.9h.

What is the UV index intensity in May in Portland?

The average daily maximum UV index in May in Portland is 6. A UV Index reading of 6 to 7 represents a high health vulnerability 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
Portland, AR

Average temperature in May - Portland, AR
  • Average high temperature in May: 81.5°F

The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is January (51.6°F).

  • Average low temperature in May: 64.8°F

The month with the highest average low temperature is July (73.6°F).
The coldest month (with the lowest average low temperature) is January (38.1°F).

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Average pressure in May
Portland, AR

Average pressure in May - Portland, AR
  • Average pressure in May: 29.98"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in May
Portland, AR

Average wind speed in May - Portland, AR
  • Average wind speed in May: 7.4mph

The windiest month (with the highest average wind speed) is February (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in May
Portland, AR

Average humidity in May - Portland, AR
  • Average humidity in May: 74%

The months with the highest relative humidity are February and March (79%).
The month with the lowest relative humidity is October (67%).

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Average rainfall in May
Portland, AR

Average rainfall in May - Portland, AR
  • Average rainfall in May: 3.35"

The wettest month (with the highest rainfall) is April (4.49").
The driest month (with the least rainfall) is November (2.44").

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Average rainfall days in May
Portland, AR

Average rainfall days in May - Portland, AR
  • Average rainfall days in May: 15.1 days

The month with the highest number of rainy days is July (16.7 days).
The month with the least rainy days is October (9.3 days).

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Average snowfall in May
Portland, AR

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

The month with the highest snowfall is February (0.43").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").

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Average snowfall days in May
Portland, AR

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

The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September, October and December (0 days).

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

Average daylight in May / Average sunshine in May - Portland, AR
  • Average daylight in May: 13h and 5min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in May: 9h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days in May
Portland, AR

Average sunshine days in May - Portland, AR
  • Average sunshine days in May: 13.8 days

The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is July (12 days).

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Average UV index in May
Portland, AR

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

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

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Average cloud cover in May
Portland, AR

Average cloud cover in May - Portland, AR
  • Average cloud cover in May: 31

The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 25).

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Average visibility in May
Portland, AR

Average visibility in May - Portland, 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).

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Portland, Arkansas, USA

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