May weather forecast and climate
Ruby, AK

Weather in May

May, the last month of the spring, in Ruby, is a fresh month, with average temperature fluctuating between 53.2°F (11.8°C) and 35.8°F (2.1°C).

Temperature

In May, the average high-temperature increases considerably, from a subzero cold 31.1°F (-0.5°C) in April, to a cool 53.2°F (11.8°C). In Ruby, the average low-temperature is 35.8°F (2.1°C).

Humidity

In May, the average relative humidity is 70%.

Rainfall

In Ruby, in May, during 16.7 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. Throughout the year, there are 116.7 rainfall days, and 14.8" (376mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall. May is the last month it regularly snows. During 4 snowfall days, Ruby aggregates 0.39" (10mm) of snow. Throughout the year, in Ruby, there are 115.2 snowfall days, and 43.07" (1094mm) of snow is accumulated.

Daylight

In Ruby, the average length of the day is 18.8h.

Sunshine

The month with the most sunshine is May, with an average of 8.1h of sunshine.

UV index

May through July, with an average maximum UV index of 4, are months with the highest UV index. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to the Sun's UV rays for the average 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. 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. 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 Ruby?

In May, the average high-temperature is 53.2°F (11.8°C), and the average low-temperature is 35.8°F (2.1°C).

What is the average humidity in May in Ruby?

In Ruby, Alaska, the average relative humidity in May is 70%.

How much does it rain in Ruby in May?

In May, the rain falls for 16.7 days. Throughout May, 1.14" (29mm) of precipitation is accumulated.

What is the last month it snows in Ruby?

May is the last month it regularly snows. During 4 snowfall days, in May, Ruby aggregates 0.39" (10mm) of snow.

What is the average length of the day in May in Ruby?

In May, the average length of the day is 18.8h.

What month has the most sunshine in Ruby?

With an average of 8.1h of sunshine, May has the most sunshine of the year in Ruby, Alaska.

How long on average sun shines in May in Ruby?

In Ruby, Alaska, the average sunshine in May is 8.1h.

What are the months with the highest UV index in Ruby?

May through July, with an average maximum UV index of 4, are months with the highest UV index in Ruby.

How high is the UV index in May in Ruby?

The average daily maximum UV index in May in Ruby is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in May
Ruby, AK

Average temperature in May - Ruby, AK
  • Average high temperature in May: 53.2°F

The warmest month (with the highest average high temperature) is July (67.3°F).
The month with the lowest average high temperature is January (-0.8°F).

  • Average low temperature in May: 35.8°F

The month with the highest average low temperature is July (49.5°F).
The coldest month (with the lowest average low temperature) is January (-10.5°F).

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Average pressure in May
Ruby, AK

Average pressure in May - Ruby, AK
  • Average pressure in May: 29.91"

The month with the highest atmospheric pressure is February (29.93").
Months with the lowest atmospheric pressure are September and October (29.76").

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Average wind speed in May
Ruby, AK

Average wind speed in May - Ruby, AK
  • Average wind speed in May: 5mph

The windiest month (with the highest average wind speed) is September (5.2mph).
The calmest month (with the lowest average wind speed) is January (4.6mph).

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Average humidity in May
Ruby, AK

Average humidity in May - Ruby, AK
  • Average humidity in May: 70%

Months with the highest relative humidity are January, February and March (96%).
The month with the lowest relative humidity is June (59%).

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Average rainfall in May
Ruby, AK

Average rainfall in May - Ruby, AK
  • Average rainfall in May: 1.14"

The wettest month (with the highest rainfall) is August (2.05").
The driest month (with the least rainfall) is January (0.59").

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Average rainfall days in May
Ruby, AK

Average rainfall days in May - Ruby, AK
  • Average rainfall days in May: 16.7 days

The month with the highest number of rainy days is August (19 days).
Months with the least rainy days are January and February (2.3 days).

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Average snowfall in May
Ruby, AK

Average snowfall in May - Ruby, AK
  • Average snowfall in May: 0.39"

The month with the highest snowfall is December (8.62").
Months with the least snowfall are June, July and August (0").

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Average snowfall days in May
Ruby, AK

Average snowfall days in May - Ruby, AK
  • Average snowfall days in May: 4 days

The month with the highest number of snowfall days is March (20.3 days).
Months with the least snowfall days are June and July (0 days).

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Average daylight in May /
Average sunshine in May
Ruby, AK

Average daylight in May / Average sunshine in May - Ruby, AK
  • Average daylight in May: 18.8h

The month with the longest days is June (Average daylight: 21.4h).
The month with the shortest days is December (Average daylight: 4h).

  • Average sunshine in May: 8.1h

The month with the most sunshine is May (Average sunshine: 8.1h).
The month with the least sunshine is December (Average sunshine: 2.3h).

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Average sunshine days in May
Ruby, AK

Average sunshine days in May - Ruby, AK
  • Average sunshine days in May: 10.8 days

The month with the most sunshine days is January (18 days).
The month with the least sunshine days is April (6.5 days).

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Average UV index in May
Ruby, AK

Average UV index in May - Ruby, AK
  • Average UV index in May: 4

Months with the highest UV index are May, June and July (UV index 4).
Months with the lowest UV index are January, February, March, October, November and December (UV index 1).

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Average cloud cover in May
Ruby, AK

Average cloud cover in May - Ruby, AK
  • Average cloud cover in May: 56

The month with the most cloud cover is April (Cloud cover 77).
The month with the least cloud cover is June (Cloud cover 47).

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Average visibility in May
Ruby, AK

Average visibility in May - Ruby, AK
  • Average visibility in May: 5mi

Months with the highest visibility are June and July (6mi).
Months with the lowest visibility are January, February, March, April and December (2mi).

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