May weather forecast
Three River Junction, WY

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Weather in May

May, the last month of the spring in Three River Junction, is a frosty month, with an average temperature varying between 28°F (-2.2°C) and 48.4°F (9.1°C).

Temperature

As May arrives, Three River Junction's weather shows an increase in high-temperatures, moving from April's cold 35.6°F (2°C) to a frosty 48.4°F (9.1°C). In Three River Junction, the May nights cool down to an average low of 28°F (-2.2°C).

Humidity

The average relative humidity in May is 78%.

Rainfall

The month with the most rainfall is May, when the rain falls for 15.5 days and typically aggregates up to 3.03" (77mm) of precipitation.

Snowfall

January through December are months with snowfall. In Three River Junction, during May, snow falls for 14.8 days and regularly aggregates up to 13.94" (354mm) of snow. In Three River Junction, during the entire year, snow falls for 176.8 days and aggregates up to 135.55" (3443mm) of snow.

Daylight

The average length of the day in May is 14h and 48min.
On the first day of the month, sunrise is at 6:13 am and sunset at 8:28 pm. On the last day of May, sunrise is at 5:42 am and sunset at 9:00 pm MDT.

Sunshine

In Three River Junction, the average sunshine in May is 9.4h.

UV index

The average daily maximum UV index in May in Three River Junction is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: In May, the maximum UV index of 3 suggests these recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Updated: Aug 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May?

An average high-temperature, in May, in Three River Junction, is 48.4°F (9.1°C) and the average low-temperature is 28°F (-2.2°C).

What is the average humidity in May?

The average relative humidity in May is 78%.

What is the rainiest month?

May is the month with the most rainfall. Rain falls for 15.5 days and accumulates 3.03" (77mm) of precipitation.

How much does it rain in Three River Junction in May?

In Three River Junction, in May, during 15.5 rainfall days, 3.03" (77mm) of precipitation is typically accumulated.

How many days does it snow in May?

In Three River Junction, in May, snow falls for 14.8 days, with typically accumulated 13.94" (354mm) of snow.

How many hours of daylight does Three River Junction have in May?

The average day length in May is 14h and 48min.

When are sunrise and sunset in May?

On the first day of May, sunrise is at 6:13 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 9:00 pm MDT.

How long on average sun shines in May?

In May, the average sunshine duration is 9.4h.

How high is the UV index in May?

In Three River Junction, the average daily maximum UV index in May is 3. A UV Index estimate of 3 to 5 represents a medium health risk 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
Three River Junction, WY

Average temperature in May - Three River Junction, WY
  • Average high temperature in May: 48.4°F

The warmest month (with the highest average high temperature) is July (72.1°F).
The month with the lowest average high temperature is December (19.4°F).

  • Average low temperature in May: 28°F

The month with the highest average low temperature is July (43.7°F).
The coldest month (with the lowest average low temperature) is December (3.9°F).

Average pressure in May
Three River Junction, WY

Average pressure in May - Three River Junction, WY
  • Average pressure in May: 29.94"Hg

The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in May
Three River Junction, WY

Average wind speed in May - Three River Junction, WY
  • Average wind speed in May: 6.3mph

The windiest months (with the highest average wind speed) are February and June (7.4mph).
The calmest months (with the lowest average wind speed) are May and August (6.3mph).

Average humidity in May
Three River Junction, WY

Average humidity in May - Three River Junction, WY
  • Average humidity in May: 78%

The month with the highest relative humidity is February (94%).
The months with the lowest relative humidity are July and August (50%).

Average rainfall in May
Three River Junction, WY

Average rainfall in May - Three River Junction, WY
  • Average rainfall in May: 3.03"

The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is July (0.94").

Average rainfall days in May
Three River Junction, WY

Average rainfall days in May - Three River Junction, 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 (2.2 days).

Average snowfall in May
Three River Junction, WY

Average snowfall in May - Three River Junction, WY
  • Average snowfall in May: 13.94"

The month with the highest snowfall is April (19.69").
The months with the least snowfall are July and August (0.08").

Average snowfall days in May
Three River Junction, WY

Average snowfall days in May - Three River Junction, WY
  • Average snowfall days in May: 14.8 days

The month with the highest number of snowfall days is March (25.3 days).
The month with the least snowfall days is July (0.3 days).

Average daylight in May /
Average sunshine in May
Three River Junction, WY

Average daylight in May / Average sunshine in May - Three River Junction, WY
  • 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: 9h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The months with the least sunshine are February and December (Average sunshine: 3h and 18min).

Average sunshine days in May
Three River Junction, WY

Average sunshine days in May - Three River Junction, WY
  • Average sunshine days in May: 5.2 days

The month with the most sunshine days is September (16 days).
The month with the least sunshine days is April (4.5 days).

Average UV index in May
Three River Junction, WY

Average UV index in May - Three River Junction, 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
Three River Junction, WY

Average cloud cover in May - Three River Junction, WY
  • Average cloud cover in May: 41

The month with the most cloud cover is February (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 15).

Average visibility in May
Three River Junction, WY

Average visibility in May - Three River Junction, WY
  • Average visibility in May: 5mi

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

Three River Junction, Wyoming, USA

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