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
May's arrival brings a change in high-temperatures, moving from a moderate 56.1°F (13.4°C) in April to an agreeable 68°F (20°C). During May, the temperature is averaged to a low of 49.6°F (9.8°C) at night.Humidity
The average relative humidity in May is 62%.Rainfall
The month with the most rainfall is May, when the rain falls for 13.6 days and typically aggregates up to 2.24" (57mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in Fort Pierre. During 0.1 snowfall days, in May, Fort Pierre aggregates 0.08" (2mm) of snow. Throughout the year, in Fort Pierre, there are 41.4 snowfall days, and 13.07" (332mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 49min.On the first day of May, sunrise is at 5:30 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 5:00 am and sunset at 8:18 pm MDT.
Sunshine
The average sunshine in May is 9.6h.UV index
The average daily maximum UV index in May in Fort Pierre is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index, 5 in May, converts into the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Frequently asked questions
What are the temperatures in Fort Pierre in May?
What is the average humidity in May in Fort Pierre?
What is the wettest month in Fort Pierre?
How much does it rain in Fort Pierre in May?
What is the last month it snows in Fort Pierre?
How many hours of daylight does Fort Pierre have in May?
When is the sunrise / sunset in May in Fort Pierre?
How many hours of sunshine does Fort Pierre have in May?
What is the UV index intensity in May in Fort Pierre?
Average temperature in May
Fort Pierre, SD
- Average high temperature in May: 68°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in May: 49.6°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure in May
Fort Pierre, SD
- Average pressure in May: 29.91"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in May
Fort Pierre, SD
- Average wind speed in May: 11.1mph
The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest months (with the lowest average wind speed) are February and August (9.9mph).
Average humidity in May
Fort Pierre, SD
- Average humidity in May: 62%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are August and September (52%).
Average rainfall in May
Fort Pierre, SD
- Average rainfall in May: 2.24"
The wettest month (with the highest rainfall) is May (2.24").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in May
Fort Pierre, SD
- Average rainfall days in May: 13.6 days
The month with the highest number of rainy days is June (14.2 days).
The month with the least rainy days is February (2.4 days).
Average snowfall in May
Fort Pierre, SD
- Average snowfall in May: 0.08"
The month with the highest snowfall is February (3.66").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Fort Pierre, SD
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (10 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Fort Pierre, SD
- Average daylight in May: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in May: 9h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in May
Fort Pierre, SD
- Average sunshine days in May: 15.3 days
The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is June (13.7 days).
Average UV index in May
Fort Pierre, SD
- Average UV index in May: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in May
Fort Pierre, SD
- Average cloud cover in May: 35
The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 19).
Average visibility in May
Fort Pierre, SD
- 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 Pierre, South Dakota, USA
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