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 fresh 51.3°F (10.7°C) in April to a refreshing 64.6°F (18.1°C). Throughout May, the average low-temperature dips to a chilly 46°F (7.8°C).Humidity
The average relative humidity in May is 58%.Rainfall
In Grassy Butte, in May, it is raining for 11.8 days, with typically 1.73" (44mm) of accumulated precipitation. In Grassy Butte, during the entire year, the rain falls for 91.6 days and collects up to 12.64" (321mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Grassy Butte. May is the last month it regularly snows. During 0.7 snowfall days, in May, Grassy Butte aggregates 0.16" (4mm) of snow. Throughout the year, there are 58.2 snowfall days, and 16.54" (420mm) of snow is accumulated.Daylight
In May, the average length of the day is 15h and 8min.On the first day of the month, sunrise is at 5:34 am and sunset at 8:05 pm. On the last day of May, sunrise is at 5:00 am and sunset at 8:41 pm MDT.
Sunshine
The average sunshine in May is 9.9h.UV index
In May, the average daily maximum UV index in Grassy Butte is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum UV index of 4 in May translates into the following recommendations:
Exercise prevention - Warding off sunburn is urged. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
What is the average humidity in May in Grassy Butte?
How much does it rain in Grassy Butte in May?
What is the last month it snows in Grassy Butte?
What is the average length of the day in May?
When are sunrise and sunset in May?
How many hours of sunshine does Grassy Butte have in May?
What is the UV index intensity in May in Grassy Butte?
Average temperature in May
Grassy Butte, ND
- Average high temperature in May: 64.6°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (21.4°F).
- Average low temperature in May: 46°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).
Average pressure in May
Grassy Butte, ND
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in May
Grassy Butte, ND
- Average wind speed in May: 10.3mph
The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).
Average humidity in May
Grassy Butte, ND
- Average humidity in May: 58%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (49%).
Average rainfall in May
Grassy Butte, ND
- Average rainfall in May: 1.73"
The wettest month (with the highest rainfall) is June (1.85").
The driest months (with the least rainfall) are January and February (0.43").
Average rainfall days in May
Grassy Butte, ND
- Average rainfall days in May: 11.8 days
The month with the highest number of rainy days is June (12.6 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in May
Grassy Butte, ND
- Average snowfall in May: 0.16"
The month with the highest snowfall is December (3.07").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Grassy Butte, ND
- Average snowfall days in May: 0.7 days
The months with the highest number of snowfall days are January and December (11.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Grassy Butte, ND
- Average daylight in May: 15h and 1min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in May: 9h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The months with the least sunshine are January and December (Average sunshine: 4h and 0min).
Average sunshine days in May
Grassy Butte, ND
- Average sunshine days in May: 17.1 days
The month with the most sunshine days is September (20.5 days).
The month with the least sunshine days is April (14.9 days).
Average UV index in May
Grassy Butte, ND
- Average UV index in May: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in May
Grassy Butte, ND
- Average cloud cover in May: 35
The month with the most cloud cover is February (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 19).
Average visibility in May
Grassy Butte, ND
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Grassy Butte, North Dakota, USA
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