May weather forecast
Clayton, ID

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Weather in May

May, the last month of the spring in Clayton, is a cool month, with temperature in the range of an average high of 54.5°F (12.5°C) and an average low of 33.4°F (0.8°C).

Temperature

The shift into May is characterized by a rise in the average high-temperature, transitioning from April's cold 42.4°F (5.8°C) to a fresh 54.5°F (12.5°C). During May, an average low-temperature of 33.4°F (0.8°C) is observed in Clayton.

Humidity

In May, the average relative humidity is 61%.

Rainfall

In Clayton, in May, it is raining for 9.7 days, with typically 0.55" (14mm) of accumulated precipitation. Throughout the year, in Clayton, Idaho, there are 75.7 rainfall days, and 6.38" (162mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Clayton are January through June, September through December. In May, in Clayton, it is snowing for 1.2 days. Throughout May, 0.31" (8mm) of snow is accumulated. In Clayton, during the entire year, snow falls for 51.7 days and aggregates up to 18.62" (473mm) of snow.

Daylight

In May, the average length of the day in Clayton is 14h and 48min.
On the first day of the month, sunrise is at 6:27 am and sunset at 8:42 pm. On the last day of May, in Clayton, sunrise is at 5:56 am and sunset at 9:14 pm MDT.

Sunshine

In Clayton, the average sunshine in May is 11.1h.

UV index

In Clayton, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: An average UV index of 4 in May transforms into this advice:
Exercise prevention - Precautions against solar damage are endorsed. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures in Clayton?

In Clayton, in May, the average high-temperature is 54.5°F (12.5°C), and the average low-temperature is 33.4°F (0.8°C).

What is the average humidity in May in Clayton?

In Clayton, Idaho, the average relative humidity in May is 61%.

How many days does it rain in May in Clayton?

In Clayton, in May, it is raining for 9.7 days, with typically 0.55" (14mm) of accumulated precipitation.

How many days does it snow in May in Clayton?

In Clayton, in May, during 1.2 snowfall days, 0.31" (8mm) of snow is typically accumulated.

How many hours of daylight does Clayton have in May?

In May, the average day length in Clayton, Idaho, is 14h and 48min.

When are sunrise and sunset in May in Clayton?

On the first day of May in Clayton, Idaho, sunrise is at 6:27 am and sunset at 8:42 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 9:14 pm MDT.

How long on average sun shines in May in Clayton?

In May, the average sunshine duration in Clayton is 11.1h.

What is the UV index intensity in May in Clayton?

In May, the average daily maximum UV index in Clayton is 4. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.
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
Clayton, ID

Average temperature in May - Clayton, ID
  • Average high temperature in May: 54.5°F

The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is December (26.1°F).

  • Average low temperature in May: 33.4°F

The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is January (8.1°F).

Average pressure in May
Clayton, ID

Average pressure in May - Clayton, ID
  • Average pressure in May: 29.93"Hg

The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in May
Clayton, ID

Average wind speed in May - Clayton, ID
  • Average wind speed in May: 5.3mph

The windiest months (with the highest average wind speed) are June and July (5.7mph).
The calmest month (with the lowest average wind speed) is January (4.8mph).

Average humidity in May
Clayton, ID

Average humidity in May - Clayton, ID
  • Average humidity in May: 61%

The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are July and August (38%).

Average rainfall in May
Clayton, ID

Average rainfall in May - Clayton, ID
  • Average rainfall in May: 0.55"

The wettest month (with the highest rainfall) is June (1.1").
The driest month (with the least rainfall) is July (0.28").

Average rainfall days in May
Clayton, ID

Average rainfall days in May - Clayton, ID
  • Average rainfall days in May: 9.7 days

The month with the highest number of rainy days is June (10.2 days).
The month with the least rainy days is January (3.8 days).

Average snowfall in May
Clayton, ID

Average snowfall in May - Clayton, ID
  • Average snowfall in May: 0.31"

The month with the highest snowfall is February (3.54").
The months with the least snowfall are July and August (0").

Average snowfall days in May
Clayton, ID

Average snowfall days in May - Clayton, ID
  • Average snowfall days in May: 1.2 days

The month with the highest number of snowfall days is December (10.1 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in May /
Average sunshine in May
Clayton, ID

Average daylight in May / Average sunshine in May - Clayton, ID
  • Average daylight in May: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in May: 11h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 48min).

Average sunshine days in May
Clayton, ID

Average sunshine days in May - Clayton, ID
  • Average sunshine days in May: 18.7 days

The month with the most sunshine days is July (24.1 days).
The months with the least sunshine days are March and April (17.2 days).

Average UV index in May
Clayton, ID

Average UV index in May - Clayton, ID
  • Average UV index in May: 4

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

Average cloud cover in May
Clayton, ID

Average cloud cover in May - Clayton, ID
  • Average cloud cover in May: 26

The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 11).

Average visibility in May
Clayton, ID

Average visibility in May - Clayton, ID
  • 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 and February (4mi).

Clayton, Idaho, USA

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