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
Portal's transition into May is marked by a distinct rise in the average high-temperature, advancing from a frosty 48.7°F (9.3°C) in April to a comfortable 63.9°F (17.7°C). In the month of May, Portal witnesses a consistent average low-temperature of 45.9°F (7.7°C).Humidity
In Portal, North Dakota, the average relative humidity in May is 57%.Rainfall
In Portal, North Dakota, in May, during 12.1 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. Throughout the year, there are 85.6 rainfall days, and 11.89" (302mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in Portal. During 0.9 snowfall days, in May, Portal aggregates 0.28" (7mm) of snow. Throughout the year, in Portal, there are 73.2 snowfall days, and 17.83" (453mm) of snow is accumulated.Daylight
The average length of the day in May in Portal is 15h and 19min.On the first day of May in Portal, sunrise is at 6:27 am and sunset at 9:06 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 9:45 pm CDT.
Sunshine
The average sunshine in May in Portal is 9.7h.UV index
The average daily maximum UV index in May in Portal is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 4 in May, converts into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature in Portal?
What is the average humidity in May in Portal?
How much does it rain in Portal in May?
What is the last month it snows in Portal?
What is the average length of the day in May in Portal?
When are sunrise and sunset in May in Portal?
How many hours of sunshine does Portal have in May?
How high is the UV index in May in Portal?
Average temperature in May
Portal, ND
- Average high temperature in May: 63.9°F
The warmest months (with the highest average high temperature) are July and August (80.1°F).
The month with the lowest average high temperature is February (17.2°F).
- Average low temperature in May: 45.9°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is February (3.6°F).
Average pressure in May
Portal, ND
- Average pressure in May: 29.93"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
Portal, ND
- Average wind speed in May: 10.3mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest month (with the lowest average wind speed) is August (8.8mph).
Average humidity in May
Portal, ND
- Average humidity in May: 57%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (51%).
Average rainfall in May
Portal, ND
- Average rainfall in May: 1.54"
The wettest month (with the highest rainfall) is June (2.32").
The driest months (with the least rainfall) are January and February (0.39").
Average rainfall days in May
Portal, ND
- Average rainfall days in May: 12.1 days
The month with the highest number of rainy days is June (14.1 days).
The month with the least rainy days is February (1.3 days).
Average snowfall in May
Portal, ND
- Average snowfall in May: 0.28"
The month with the highest snowfall is November (3.62").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Portal, ND
- Average snowfall days in May: 0.9 days
The month with the highest number of snowfall days is December (14.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Portal, ND
- Average daylight in May: 15h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in May: 9h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in May
Portal, ND
- Average sunshine days in May: 16.4 days
The month with the most sunshine days is September (19.6 days).
The month with the least sunshine days is June (14.2 days).
Average UV index in May
Portal, ND
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in May
Portal, ND
- Average cloud cover in May: 36
The month with the most cloud cover is February (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 22).
Average visibility in May
Portal, 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).
Portal, North Dakota, USA
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