May weather forecast
Alta, WY

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Weather in May

May, the last month of the spring in Alta, is a fresh month, with an average temperature ranging between max 53.6°F (12°C) and min 32°F (0°C).

Temperature

With the beginning of May, Alta's average high-temperature sees an increase, transitioning from an icy 40.1°F (4.5°C) in April to a fresh 53.6°F (12°C). Alta records a consistent low-temperature average of 32°F (0°C) during May, indicating a significant difference from the daytime heat.

Humidity

In Alta, the average relative humidity in May is 71%.

Rainfall

In May, the rain falls for 15.5 days. Throughout May, 3.46" (88mm) of precipitation is accumulated. Throughout the year, there are 96.6 rainfall days, and 32.95" (837mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through June, August through December. In Alta, in May, snow falls for 12.1 days, with typically accumulated 12.95" (329mm) of snow. Throughout the year, there are 160.8 snowfall days, and 200.16" (5084mm) of snow is accumulated.

Daylight

The average length of the day in May is 14h and 45min.
On the first day of the month, sunrise is at 6:14 am and sunset at 8:27 pm. On the last day of May, in Alta, sunrise is at 5:45 am and sunset at 8:58 pm MDT.

Sunshine

In Alta, the average sunshine in May is 9.5h.

UV index

The average daily maximum UV index in May is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: An average maximum UV index of 3 in May leads to these recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. It's recommended to limit sun exposure when its radiation is at its peak during midday. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Updated: Jul 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May?

Alta in May has an average high-temperature of 53.6°F (12°C) and an average low-temperature of 32°F (0°C).

What is the average humidity in May?

In May, the average relative humidity is 71%.

How many days does it rain in May?

In May, the rain falls for 15.5 days. Throughout May, 3.46" (88mm) of precipitation is accumulated.

How many days does it snow in May?

In Alta, in May, snow falls for 12.1 days, with typically accumulated 12.95" (329mm) of snow.

How many hours of daylight does Alta have in May?

In Alta, the average day length in May is 14h and 45min.

When is the sunrise / sunset in May?

On the first day of May, sunrise is at 6:14 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:58 pm MDT.

How many hours of sunshine does Alta have in May?

In Alta, the average sunshine duration in May is 9.5h.

What is the UV index reading in May?

The average daily maximum UV index in May is 3. A UV Index of 3 to 5 symbolizes 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
Alta, WY

Average temperature in May - Alta, WY
  • Average high temperature in May: 53.6°F

The warmest month (with the highest average high temperature) is July (75.4°F).
The month with the lowest average high temperature is December (23.2°F).

  • Average low temperature in May: 32°F

The month with the highest average low temperature is July (46.9°F).
The coldest month (with the lowest average low temperature) is December (7.7°F).

Average pressure in May
Alta, WY

Average pressure in May - Alta, WY
  • 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 (29.92"Hg).

Average wind speed in May
Alta, WY

Average wind speed in May - Alta, WY
  • Average wind speed in May: 5.5mph

The windiest month (with the highest average wind speed) is June (6.2mph).
The calmest months (with the lowest average wind speed) are January and December (4.8mph).

Average humidity in May
Alta, WY

Average humidity in May - Alta, WY
  • Average humidity in May: 71%

The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is August (47%).

Average rainfall in May
Alta, WY

Average rainfall in May - Alta, WY
  • Average rainfall in May: 3.46"

The wettest month (with the highest rainfall) is February (4.13").
The driest month (with the least rainfall) is July (0.91").

Average rainfall days in May
Alta, WY

Average rainfall days in May - Alta, WY
  • Average rainfall days in May: 15.5 days

The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is January (3 days).

Average snowfall in May
Alta, WY

Average snowfall in May - Alta, WY
  • Average snowfall in May: 12.95"

The month with the highest snowfall is February (34.33").
The month with the least snowfall is July (0").

Average snowfall days in May
Alta, WY

Average snowfall days in May - Alta, WY
  • Average snowfall days in May: 12.1 days

The month with the highest number of snowfall days is March (23.6 days).
The month with the least snowfall days is July (0.1 days).

Average daylight in May /
Average sunshine in May
Alta, WY

Average daylight in May / Average sunshine in May - Alta, WY
  • Average daylight in May: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in May: 9h and 3min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).

Average sunshine days in May
Alta, WY

Average sunshine days in May - Alta, WY
  • Average sunshine days in May: 7.5 days

The month with the most sunshine days is July (20.3 days).
The month with the least sunshine days is April (6.2 days).

Average UV index in May
Alta, WY

Average UV index in May - Alta, WY
  • Average UV index in May: 3

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 1).

Average cloud cover in May
Alta, WY

Average cloud cover in May - Alta, WY
  • Average cloud cover in May: 37

The month with the most cloud cover is February (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 14).

Average visibility in May
Alta, WY

Average visibility in May - Alta, WY
  • Average visibility in May: 6mi

The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (3mi).

Alta, Wyoming, USA

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