May weather forecast
Etna, WY

Share

Weather in May

The last month of the spring, May, is a mild month in Etna, Wyoming, with an average temperature varying between 31.3°F (-0.4°C) and 55.4°F (13°C).

Temperature

The commencement of May sees a shift in the average high-temperature, moving from a wintry 42.1°F (5.6°C) in April to a mild 55.4°F (13°C). Throughout May, Etna notes a dramatic plunge from the daily high to an average low-temperature of 31.3°F (-0.4°C).

Humidity

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

Rainfall

In May, the rain falls for 17.9 days. Throughout May, 2.52" (64mm) of precipitation is accumulated. In Etna, during the entire year, the rain falls for 127 days and collects up to 24.29" (617mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall in Etna. In Etna, in May, during 4.1 snowfall days, 2.87" (73mm) of snow is typically accumulated. Throughout the year, there are 126.6 snowfall days, and 110.28" (2801mm) of snow is accumulated.

Daylight

In Etna, the average length of the day in May is 14h and 41min.
On the first day of May, sunrise is at 6:16 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:56 pm MDT.

Sunshine

In Etna, the average sunshine in May is 10.1h.

UV index

The average daily maximum UV index in May in Etna is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 3 in May translates into this advice:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Etna in May?

The high-temperature, in May, in Etna, records 55.4°F (13°C), while the low-temperature is 31.3°F (-0.4°C).

What is the average humidity in May in Etna?

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

How much does it rain in Etna in May?

In Etna, in May, it is raining for 17.9 days, with typically 2.52" (64mm) of accumulated precipitation.

How much does it snow in Etna in May?

In Etna, Wyoming, during May, snow falls for 4.1 days and regularly aggregates up to 2.87" (73mm) of snow.

How many hours of daylight does Etna have in May?

In May, the average day length in Etna, Wyoming, is 14h and 41min.

When is the sunrise / sunset in May in Etna?

On the first day of May in Etna, Wyoming, sunrise is at 6:16 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:56 pm MDT.

How many hours of sunshine does Etna have in May?

In May, the average sunshine duration in Etna, Wyoming, is 10.1h.

How high is the UV index in May in Etna?

In May, the average daily maximum UV index in Etna is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat from 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
Etna, WY

Average temperature in May - Etna, WY
  • Average high temperature in May: 55.4°F

The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is December (24.3°F).

  • Average low temperature in May: 31.3°F

The months with the highest average low temperature are July and August (45.3°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).

Average pressure in May
Etna, WY

Average pressure in May - Etna, WY
  • Average pressure in May: 29.92"Hg

The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in May
Etna, WY

Average wind speed in May - Etna, WY
  • Average wind speed in May: 5mph

The windiest month (with the highest average wind speed) is June (5.7mph).
The calmest month (with the lowest average wind speed) is January (4.3mph).

Average humidity in May
Etna, WY

Average humidity in May - Etna, WY
  • Average humidity in May: 70%

The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is August (46%).

Average rainfall in May
Etna, WY

Average rainfall in May - Etna, WY
  • Average rainfall in May: 2.52"

The wettest month (with the highest rainfall) is February (2.91").
The driest month (with the least rainfall) is July (0.91").

Average rainfall days in May
Etna, WY

Average rainfall days in May - Etna, WY
  • Average rainfall days in May: 17.9 days

The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (4.6 days).

Average snowfall in May
Etna, WY

Average snowfall in May - Etna, WY
  • Average snowfall in May: 2.87"

The month with the highest snowfall is February (22.91").
The months with the least snowfall are July and August (0").

Average snowfall days in May
Etna, WY

Average snowfall days in May - Etna, WY
  • Average snowfall days in May: 4.1 days

The months with the highest number of snowfall days are February and December (22.3 days).
The months with the least snowfall days are July and August (0 days).

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

Average daylight in May / Average sunshine in May - Etna, WY
  • Average daylight in May: 14h and 4min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in May: 10h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).

Average sunshine days in May
Etna, WY

Average sunshine days in May - Etna, WY
  • Average sunshine days in May: 7.8 days

The month with the most sunshine days is September (16.2 days).
The month with the least sunshine days is April (5.3 days).

Average UV index in May
Etna, WY

Average UV index in May - Etna, 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, November and December (UV index 1).

Average cloud cover in May
Etna, WY

Average cloud cover in May - Etna, WY
  • Average cloud cover in May: 33

The month with the most cloud cover is February (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 13).

Average visibility in May
Etna, WY

Average visibility in May - Etna, 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 and December (3mi).

Etna, Wyoming, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location