May weather forecast and climate
Fort Smith, AR

What is the temperature in May in Fort Smith?

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

How much does it rain in Fort Smith in May?

In May, in Fort Smith, the rain falls for 10.7 days. Throughout May, 5.5" (138.9mm) of precipitation is accumulated.

What is the rainiest month in Fort Smith?

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

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