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 witnesses a clear temperature increase, soaring from a fresh 50.2°F (10.1°C) in April to an enjoyable 64.9°F (18.3°C). During the month of May, the nighttime temperature in Portland falls to an average of 48.2°F (9°C).Humidity
The average relative humidity in May is 63%.Rainfall
In Portland, in May, during 14.3 rainfall days, 2.28" (58mm) of precipitation is typically accumulated. Throughout the year, in Portland, North Dakota, there are 101.8 rainfall days, and 18.23" (463mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Portland. May is the last month it regularly snows. During 0.6 snowfall days, in May, Portland aggregates 0.63" (16mm) of snow. Throughout the year, there are 66.9 snowfall days, and 20.43" (519mm) of snow is accumulated.Daylight
In May, the average length of the day in Portland, North Dakota, is 15h and 8min.On the first day of the month, sunrise is at 6:11 am and sunset at 8:41 pm. On the last day of May, in Portland, sunrise is at 5:36 am and sunset at 9:18 pm CDT.
Sunshine
In Portland, the average sunshine in May is 8.7h.UV index
In May, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: During May, 4 as the daily maximum UV index converts into the following advice:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature in Portland?
What is the average humidity in May in Portland?
How much does it rain in Portland in May?
What is the last month it snows in Portland?
How many hours of daylight does Portland have in May?
When is the sunrise / sunset in May in Portland?
How long on average sun shines in May in Portland?
What is the UV index reading in May in Portland?
Average temperature in May
Portland, ND
- Average high temperature in May: 64.9°F
The warmest months (with the highest average high temperature) are July and August (80.4°F).
The month with the lowest average high temperature is January (15.6°F).
- Average low temperature in May: 48.2°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (1.8°F).
Average pressure in May
Portland, ND
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in May
Portland, ND
- Average wind speed in May: 9.9mph
The windiest month (with the highest average wind speed) is October (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (8.3mph).
Average humidity in May
Portland, ND
- Average humidity in May: 63%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (61%).
Average rainfall in May
Portland, ND
- Average rainfall in May: 2.28"
The wettest month (with the highest rainfall) is June (3.5").
The driest months (with the least rainfall) are January and February (0.55").
Average rainfall days in May
Portland, ND
- Average rainfall days in May: 14.3 days
The month with the highest number of rainy days is June (16.9 days).
The month with the least rainy days is February (1.9 days).
Average snowfall in May
Portland, ND
- Average snowfall in May: 0.63"
The month with the highest snowfall is December (4.25").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Portland, ND
- Average snowfall days in May: 0.6 days
The month with the highest number of snowfall days is December (14 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Portland, 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: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in May
Portland, ND
- Average sunshine days in May: 15.1 days
The month with the most sunshine days is September (20.4 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in May
Portland, ND
- Average UV index in May: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover in May
Portland, ND
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in May
Portland, 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).
Portland, North Dakota, USA
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