Fort Smith
Arkansas, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Fort Smith, AR

The last month of the spring, May, is also a moderately hot month in Fort Smith, Arkansas, with average temperature ranging between min 59.2°F (15.1°C) and max 80.4°F (26.9°C).

Temperature

In Fort Smith, the average high-temperature slightly increases, from 73.8°F (23.2°C) in April, to a still warm 80.4°F (26.9°C). In Fort Smith, in May, the average low-temperature is 59.2°F (15.1°C).

Humidity

In Fort Smith, the average relative humidity is 70.7%.

Rainfall

The month with the most rainfall is May when the rain falls for 10.7 days and typically aggregates up to 5.5" (138.9mm) of precipitation.

Snowfall

In Fort Smith, during the entire year, snow aggregates up to 4.9" (124.4mm).

Daylight

In May, the average length of the day is 14h.

Sunshine

In May, the average sunshine in Fort Smith is 8.9h.

UV index

The average daily maximum UV index is 9. A UV Index of 8 to 10 symbolizes a very high health risk from the exposure to the Sun's UV rays for the average person.
The daily maximum UV index of 9 interpret into the following advice:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in May in Fort Smith?

The average high-temperature, in May, in Fort Smith, is 80.4°F (26.9°C), while the average low-temperature is 59.2°F (15.1°C).

What is the average humidity in May in Fort Smith?

In Fort Smith, the average relative humidity in May is 70.7%.

How many days does it rain in May in Fort Smith?

In Fort Smith, in May, it is raining for 10.7 days, with typically 5.5" (138.9mm) of accumulated precipitation.

What is the rainiest month in Fort Smith?

May is the month with the most rainfall in Fort Smith. Rain falls for 10.7 days and accumulates 5.5" (138.9mm) of precipitation.

How many hours of daylight does Fort Smith have in May?

In Fort Smith, Arkansas, the average length of the day in May is 14h.

How long on average sun shines in May in Fort Smith?

The average sunshine in May in Fort Smith, Arkansas, is 8.9h.

How high is the UV index in May in Fort Smith?

The average daily maximum UV index in May in Fort Smith is 9. A UV Index reading of 8 to 10 represents a very high hazard to health from unprotected exposure to the UV radiation.
Average temperature in May - Fort Smith, AR
  • Average high temperature in May: 80.5°F

The warmest month (with the highest average high temperature) is August (93.4°F).
The month with the lowest average high temperature is January (49.9°F).

  • Average low temperature in May: 59.2°F

The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (29°F).

Average humidity in May - Fort Smith, AR
  • Average humidity in May: 70.7%

The month with the highest relative humidity is September (71.8%).
The month with the lowest relative humidity is April (63.8%).

Average rainfall in May - Fort Smith, AR
  • Average rainfall in May: 5.5"

The wettest month (with the highest rainfall) is May (5.5").
The driest month (with the lowest rainfall) is August (2.6").

Average rainfall days in May - Fort Smith, AR
  • Average rainfall days in May: 10.7 days

The month with the highest number of rainy days is May (10.7 days).
The month with the lowest number of rainy days is August (6.3 days).

Average snowfall in May - Fort Smith, AR
  • Average snowfall in May: 0"

The month with the highest snowfall is January (2.4").
Months with the lowest snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in May - Fort Smith, AR
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (1.1 days).
Months with the lowest number of snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in May / Average sunshine in May - Fort Smith, AR
  • Average daylight in May: 14h

The month with the longest days is June (Average daylight: 14.5h).
The month with shortest days is December (Average daylight: 9.8h).

  • Average sunshine in May: 8.9h

The month with most sunshine is July (Average sunshine: 10.6h).
The month with least sunshine is December (Average sunshine: 5h).

Average UV index in May - Fort Smith, AR
  • Average UV index in May: 9

Months with the highest UV index are June and July (UV index 10).
The month with the lowest UV index is December (UV index 2).