Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The beginning of May signals a rise in the average high-temperature, moving from a cool 51.1°F (10.6°C) in April to a refreshing 61.3°F (16.3°C). During the nights in May, Fort Smith experiences a consistent average temperature of 42.4°F (5.8°C).Humidity
The average relative humidity in May is 62%.Rainfall
May is the month with the most rainfall. Rain falls for 18 days and accumulates 2.01" (51mm) of precipitation.Snowfall
Months with snowfall in Fort Smith are January through May, September through December. May is the last month it regularly snows. During 0.9 snowfall days, in May, Fort Smith aggregates 0.51" (13mm) of snow. Throughout the year, there are 66 snowfall days, and 33.07" (840mm) of snow is accumulated.Daylight
The average length of the day in May in Fort Smith, Montana, is 14h and 55min.On the first day of May, sunrise is at 5:58 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 5:27 am and sunset at 8:52 pm MDT.
Sunshine
In May, the average sunshine in Fort Smith is 10.2h.UV index
In Fort Smith, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 4 during May translates into the following recommendations:
Act with care - The need to guard against sun damage is communicated. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Fort Smith?
What is the average humidity in May in Fort Smith?
What is the wettest month in Fort Smith?
How many days does it rain in May in Fort Smith?
What is the last month it snows in Fort Smith?
How many hours of daylight does Fort Smith have in May?
When are sunrise and sunset in May in Fort Smith?
How long on average sun shines in May in Fort Smith?
What is the UV index intensity in May in Fort Smith?
Average temperature in May
Fort Smith, MT
- Average high temperature in May: 61.3°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is December (29.7°F).
- Average low temperature in May: 42.4°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is February (16.5°F).
Average pressure in May
Fort Smith, MT
- Average pressure in May: 29.92"Hg
The months with the highest atmospheric pressure are January and December (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in May
Fort Smith, MT
- Average wind speed in May: 7.5mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in May
Fort Smith, MT
- Average humidity in May: 62%
The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is August (41%).
Average rainfall in May
Fort Smith, MT
- Average rainfall in May: 2.01"
The wettest month (with the highest rainfall) is May (2.01").
The driest month (with the least rainfall) is December (0.59").
Average rainfall days in May
Fort Smith, MT
- Average rainfall days in May: 18 days
The month with the highest number of rainy days is May (18 days).
The months with the least rainy days are January and December (6.3 days).
Average snowfall in May
Fort Smith, MT
- Average snowfall in May: 0.51"
The month with the highest snowfall is February (6.85").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Fort Smith, MT
- Average snowfall days in May: 0.9 days
The month with the highest number of snowfall days is February (14.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Fort Smith, MT
- Average daylight in May: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in May: 10h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).
Average sunshine days in May
Fort Smith, MT
- Average sunshine days in May: 8.7 days
The month with the most sunshine days is October (16.7 days).
The month with the least sunshine days is May (8.7 days).
Average UV index in May
Fort Smith, MT
- Average UV index in May: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Fort Smith, MT
- Average cloud cover in May: 33
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 14).
Average visibility in May
Fort Smith, MT
- 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).
Fort Smith, Montana, USA
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