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 marks a rise in the average high-temperature, moving from April's cool 50.9°F (10.5°C) to an enjoyable 64.8°F (18.2°C). During May, the nighttime temperature in Glen Ullin averages to a frosty 46.2°F (7.9°C).Humidity
In May, the average relative humidity is 60%.Rainfall
In Glen Ullin, in May, during 13.4 rainfall days, 1.93" (49mm) of precipitation is typically accumulated. Throughout the year, there are 100.8 rainfall days, and 14.88" (378mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in Glen Ullin. During 0.5 snowfall days, in May, Glen Ullin aggregates 0.31" (8mm) of snow. In Glen Ullin, during the entire year, snow falls for 66.7 days and aggregates up to 20.04" (509mm) of snow.Daylight
In May, the average length of the day is 15h and 4min.On the first day of May, sunrise is at 6:30 am and sunset at 8:57 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 9:33 pm CDT.
Sunshine
The average sunshine in May in Glen Ullin, North Dakota, is 9.7h.UV index
In Glen Ullin, the average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 4 in May interprets into the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Glen Ullin in May?
What is the average humidity in May in Glen Ullin?
How many days does it rain in May in Glen Ullin?
What is the last month it snows in Glen Ullin?
What is the average length of the day in May in Glen Ullin?
When is the sunrise / sunset in May in Glen Ullin?
How long on average sun shines in May in Glen Ullin?
How high is the UV index in May in Glen Ullin?
Average temperature in May
Glen Ullin, ND
- Average high temperature in May: 64.8°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (21.2°F).
- Average low temperature in May: 46.2°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (7.2°F).
Average pressure in May
Glen Ullin, 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
Glen Ullin, ND
- Average wind speed in May: 10.1mph
The windiest months (with the highest average wind speed) are April and October (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in May
Glen Ullin, ND
- Average humidity in May: 60%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (53%).
Average rainfall in May
Glen Ullin, ND
- Average rainfall in May: 1.93"
The wettest month (with the highest rainfall) is June (2.56").
The driest month (with the least rainfall) is February (0.51").
Average rainfall days in May
Glen Ullin, ND
- Average rainfall days in May: 13.4 days
The month with the highest number of rainy days is June (15.4 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in May
Glen Ullin, ND
- Average snowfall in May: 0.31"
The month with the highest snowfall is December (3.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Glen Ullin, ND
- Average snowfall days in May: 0.5 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Glen Ullin, ND
- Average daylight in May: 15h and 1min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in May: 9h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The months with the least sunshine are January and December (Average sunshine: 4h and 0min).
Average sunshine days in May
Glen Ullin, ND
- Average sunshine days in May: 15 days
The month with the most sunshine days is September (20 days).
The month with the least sunshine days is June (13.1 days).
Average UV index in May
Glen Ullin, ND
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in May
Glen Ullin, ND
- Average cloud cover in May: 37
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 21).
Average visibility in May
Glen Ullin, ND
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Glen Ullin, North Dakota, USA
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