May weather forecast
Grand Forks, ND

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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 is considered the true beginning of spring in Grand Forks, with warming temperatures and blossoming natural scenery. The city receives plenty of daylight, marking the arrival of longer days. The noticeable climatic element in May lies in the rise in humidity to 63%, indicating a more moist environment. There is an increase in rainfall, adding to the freshness of the spring season. Despite the occasional rain, clear skies and a decrease in cloud cover make May a visually appealing month.

Temperature

May signals a significant shift in the average high-temperature, soaring from April's chilly 49.8°F (9.9°C) to a refreshing 64.9°F (18.3°C). During the nights in May, an average low-temperature of 47.8°F (8.8°C) is observed.

Humidity

In Grand Forks, the average relative humidity in May is 63%.

Rainfall

In Grand Forks, in May, it is raining for 11.7 days, with typically 1.14" (29mm) of accumulated precipitation. Throughout the year, there are 80.3 rainfall days, and 10.47" (266mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Grand Forks. May is the last month it regularly snows in Grand Forks. During 0.3 snowfall days, in May, 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 Grand Forks, North Dakota, the average length of the day in May is 15h and 11min.
On the first day of May in Grand Forks, sunrise is at 6:08 am and sunset at 8:41 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 9:18 pm CDT.

Sunshine

In May, the average sunshine is 8.8h.

UV index

In May, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: In May, the maximum UV index of 4 transforms into these recommendations:
Exercise prevention - Precautions against solar damage are endorsed. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
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Frequently asked questions

What is the usual temperature for Grand Forks in May?

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

What is the average humidity in May in Grand Forks?

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, 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 Grand Forks, North Dakota, the average day length in May is 15h and 11min.

When are sunrise and sunset in May in Grand Forks?

In May, on the first day of the month, sunrise is at 6:08 am and sunset at 8:41 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 9:18 pm CDT.

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

The average sunshine duration 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 estimate of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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"Hg

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

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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%

The 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").
The 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).
The 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: 15h and 1min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in May: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).

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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).
The 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

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).

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Grand Forks, North Dakota, USA

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