May weather forecast and climate
Grand Forks, ND

The grand University of North Dakota located in Grand Forks, North Dakota
The grand University of North Dakota located in Grand Forks, North Dakota

Weather in May

May, the last month of the spring, in Grand Forks, is a comfortable month, with temperature in the range of an average high of 64.9°F (18.3°C) and an average low of 47.8°F (8.8°C).

Temperature

In Grand Forks, the average high-temperature in May significantly increases, from a chilly 49.8°F (9.9°C) in April, to a comfortable 64.9°F (18.3°C). The average low-temperature, in Grand Forks, is 47.8°F (8.8°C).

Humidity

In Grand Forks, North Dakota, the average relative humidity is 63%.

Rainfall

In Grand Forks, it is raining for 11.7 days, with typically 1.14" (29mm) of accumulated precipitation. In Grand Forks, during the entire year, the rain falls for 80.3 days and collects up to 10.47" (266mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows in Grand Forks. During 0.3 snowfall days, Grand Forks aggregates 0.08" (2mm) of snow. Throughout the year, there are 54.6 snowfall days, and 11.54" (293mm) of snow is accumulated.

Daylight

In May, the average length of the day is 15.2h.

Sunshine

The average sunshine in May is 8.8h.

UV index

In Grand Forks, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in May in Grand Forks?

The average high-temperature, in May, is 64.9°F (18.3°C), while the average low-temperature is 47.8°F (8.8°C).

What is the average humidity in May in Grand Forks?

The average relative humidity in May is 63%.

How many days does it rain in May in Grand Forks?

In Grand Forks, North Dakota, during May, the rain falls for 11.7 days and regularly aggregates up to 1.14" (29mm) of precipitation.

What is the last month it snows in Grand Forks?

May is the last month it regularly snows. During 0.3 snowfall days, in May, Grand Forks aggregates 0.08" (2mm) of snow.

How many hours of daylight does Grand Forks have in May?

In May, the average length of the day is 15.2h.

How long on average sun shines in May in Grand Forks?

The average sunshine in May in Grand Forks, North Dakota, is 8.8h.

What is the UV index reading in May in Grand Forks?

In Grand Forks, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to the UV radiation.

Average temperature in May
Grand Forks, ND

Average temperature in May - Grand Forks, ND
  • Average high temperature in May: 64.9°F

The warmest month (with the highest average high temperature) is August (80.6°F).
The month with the lowest average high temperature is January (15.3°F).

  • Average low temperature in May: 47.8°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 (0.9°F).

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Average pressure in May
Grand Forks, ND

Average pressure in May - Grand Forks, ND
  • Average pressure in May: 29.94"

The month with the highest atmospheric pressure is February (30.16").
The month with the lowest atmospheric pressure is June (29.86").

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Average wind speed in May
Grand Forks, ND

Average wind speed in May - Grand Forks, ND
  • Average wind speed in May: 9.8mph

The windiest month (with the highest average wind speed) is October (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (8.2mph).

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Average humidity in May
Grand Forks, ND

Average humidity in May - Grand Forks, ND
  • Average humidity in May: 63%

Months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is August (60%).

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Average rainfall in May
Grand Forks, ND

Average rainfall in May - Grand Forks, ND
  • Average rainfall in May: 1.14"

The wettest month (with the highest rainfall) is June (1.89").
The driest month (with the least rainfall) is January (0.24").

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Average rainfall days in May
Grand Forks, ND

Average rainfall days in May - Grand Forks, ND
  • Average rainfall days in May: 11.7 days

The month with the highest number of rainy days is June (14.1 days).
The month with the least rainy days is January (0.8 days).

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Average snowfall in May
Grand Forks, ND

Average snowfall in May - Grand Forks, ND
  • Average snowfall in May: 0.08"

The month with the highest snowfall is December (2.8").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Grand Forks, ND

Average snowfall days in May - Grand Forks, ND
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is December (11.7 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
Grand Forks, ND

Average daylight in May / Average sunshine in May - Grand Forks, ND
  • Average daylight in May: 15.2h

The month with the longest days is June (Average daylight: 16h).
The month with the shortest days is December (Average daylight: 8.5h).

  • Average sunshine in May: 8.8h

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is January (Average sunshine: 2.9h).

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Average sunshine days in May
Grand Forks, ND

Average sunshine days in May - Grand Forks, ND
  • Average sunshine days in May: 17.3 days

The month with the most sunshine days is January (21.5 days).
The month with the least sunshine days is June (13.7 days).

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Average UV index in May
Grand Forks, ND

Average UV index in May - Grand Forks, ND
  • Average UV index in May: 4

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in May
Grand Forks, ND

Average cloud cover in May - Grand Forks, ND
  • Average cloud cover in May: 41

The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 25).

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Average visibility in May
Grand Forks, ND

Average visibility in May - Grand Forks, ND
  • Average visibility in May: 6mi

Months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
Months with the lowest visibility are January, February, March and December (5mi).

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