May weather forecast and climate
Stanley, ND

Weather in May

The last month of the spring, May, is an enjoyable month in Stanley, North Dakota, with average temperature varying between 46°F (7.8°C) and 64.2°F (17.9°C).

Temperature

In May, the average high-temperature rises, from a cool 50°F (10°C) in April, to an enjoyable 64.2°F (17.9°C). In May, the average low-temperature is 46°F (7.8°C).

Humidity

In May, the average relative humidity is 58%.

Rainfall

In Stanley, in May, during 8.3 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. In Stanley, during the entire year, the rain falls for 69.9 days and collects up to 6.77" (172mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Stanley. May is the last month it regularly snows. During 0.3 snowfall days, Stanley aggregates 0.04" (1mm) of snow. Throughout the year, there are 55.5 snowfall days, and 6.46" (164mm) of snow is accumulated.

Daylight

The average length of the day in May is 15.3h.

Sunshine

In Stanley, the average sunshine in May is 9.6h.

UV index

The average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to the UV radiation for the ordinary person.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in May in Stanley?

In Stanley, North Dakota, in May, the average high-temperature is 64.2°F (17.9°C), and the average low-temperature is 46°F (7.8°C).

What is the average humidity in May in Stanley?

The average relative humidity in May is 58%.

How many days does it rain in May in Stanley?

In Stanley, during May, the rain falls for 8.3 days and regularly aggregates up to 0.71" (18mm) of precipitation.

What is the last month it snows in Stanley?

May is the last month it regularly snows in Stanley, North Dakota. During 0.3 snowfall days, in May, Stanley aggregates 0.04" (1mm) of snow.

How many hours of daylight does Stanley have in May?

In May, the average length of the day in Stanley, North Dakota, is 15.3h.

How many hours of sunshine does Stanley have in May?

In Stanley, North Dakota, the average sunshine in May is 9.6h.

How high is the UV index in May in Stanley?

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

Average temperature in May
Stanley, ND

Average temperature in May - Stanley, ND
  • Average high temperature in May: 64.2°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (19.8°F).

  • Average low temperature in May: 46°F

The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (5.7°F).

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Average pressure in May
Stanley, ND

Average pressure in May - Stanley, ND
  • Average pressure in May: 29.93"

The month with the highest atmospheric pressure is February (30.17").
The month with the lowest atmospheric pressure is June (29.84").

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Average wind speed in May
Stanley, ND

Average wind speed in May - Stanley, ND
  • Average wind speed in May: 10.2mph

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 (8.6mph).

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Average humidity in May
Stanley, ND

Average humidity in May - Stanley, ND
  • Average humidity in May: 58%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (52%).

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Average rainfall in May
Stanley, ND

Average rainfall in May - Stanley, ND
  • Average rainfall in May: 0.71"

The wettest month (with the highest rainfall) is June (1.18").
The driest months (with the least rainfall) are January and February (0.2").

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Average rainfall days in May
Stanley, ND

Average rainfall days in May - Stanley, ND
  • Average rainfall days in May: 8.3 days

The month with the highest number of rainy days is June (11.3 days).
The month with the least rainy days is February (1.6 days).

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Average snowfall in May
Stanley, ND

Average snowfall in May - Stanley, ND
  • Average snowfall in May: 0.04"

The month with the highest snowfall is February (1.14").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Stanley, ND

Average snowfall days in May - Stanley, ND
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is December (10.9 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
Stanley, ND

Average daylight in May / Average sunshine in May - Stanley, ND
  • Average daylight in May: 15.3h

The month with the longest days is June (Average daylight: 16h).
The month with the shortest days is December (Average daylight: 8.4h).

  • Average sunshine in May: 9.6h

The month with the most sunshine is July (Average sunshine: 11.3h).
Months with the least sunshine are January and December (Average sunshine: 3.9).

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Average sunshine days in May
Stanley, ND

Average sunshine days in May - Stanley, ND
  • Average sunshine days in May: 19.9 days

The month with the most sunshine days is November (22.7 days).
The month with the least sunshine days is June (15.7 days).

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Average UV index in May
Stanley, ND

Average UV index in May - Stanley, 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, March, October, November and December (UV index 2).

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Average cloud cover in May
Stanley, ND

Average cloud cover in May - Stanley, ND
  • Average cloud cover in May: 37

The month with the most cloud cover is February (Cloud cover 62).
Months with the least cloud cover are July and August (Cloud cover 22).

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Average visibility in May
Stanley, ND

Average visibility in May - Stanley, ND
  • Average visibility in May: 6mi

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

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