August weather forecast
Three River Junction, WY

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Weather in August

The last month of the summer, August, is another pleasant month in Three River Junction, Wyoming, with temperature in the range of an average low of 43.3°F (6.3°C) and an average high of 70.7°F (21.5°C).

Temperature

August brings an average high-temperature of a still agreeable 70.7°F (21.5°C), showing a slight difference from July's 72.1°F (22.3°C). August presents a sharp fall from Three River Junction's daytime highs to an average low-temperature of 43.3°F (6.3°C).

Humidity

July and August, with an average relative humidity of 50%, are the least humid months.

Rainfall

In Three River Junction, in August, it is raining for 11.9 days, with typically 1.14" (29mm) of accumulated precipitation. Throughout the year, there are 94.6 rainfall days, and 24.41" (620mm) of precipitation is accumulated.

Snowfall

January through December are months with snowfall. The months with the least snowfall are July and August Snow falls for 0.6 days and accumulates 0.08" (2mm) of snow.

Daylight

In August, the average length of the day is 13h and 58min.
On the first day of August, sunrise is at 6:11 am and sunset at 8:47 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 8:00 pm MDT.

Sunshine

In August, the average sunshine is 11.4h.

UV index

In August, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: A daily maximum UV index of 3 in August translates into the following instructions:
Act with care - Obligation to protect against skin and eye damage is highlighted. To guard against the harmful effects of the Sun, minimize exposure during midday. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Caution! The reflection of snow 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 are the temperatures in Three River Junction in August?

The average high-temperature and low-temperature during August are 70.7°F (21.5°C) and 43.3°F (6.3°C) respectively.

What is the least humid month?

July and August, with an average relative humidity of 50%, are the least humid months.

What is the average humidity in August?

The average relative humidity in August is 50%.

How much does it rain in August?

In Three River Junction, in August, it is raining for 11.9 days, with typically 1.14" (29mm) of accumulated precipitation.

When it does not snow?

The months with the least snowfall are July and August Snow falls for 0.6 days and accumulates 0.08" (2mm) of snow.

How many days does it snow in August?

In Three River Junction, in August, during 0.6 snowfall days, 0.08" (2mm) of snow is typically accumulated.

What is the average length of the day in August?

In August, the average day length is 13h and 58min.

When are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:11 am and sunset at 8:47 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 8:00 pm MDT.

How many hours of sunshine does Three River Junction have in August?

In Three River Junction, the average sunshine duration in August is 11.4h.

What is the UV index intensity in August?

The average daily maximum UV index in August 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 August
Three River Junction, WY

Average temperature in August - Three River Junction, WY
  • Average high temperature in August: 70.7°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 August: 43.3°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 August
Three River Junction, WY

Average pressure in August - Three River Junction, WY
  • Average pressure in August: 29.98"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 August
Three River Junction, WY

Average wind speed in August - Three River Junction, WY
  • Average wind speed in August: 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 August
Three River Junction, WY

Average humidity in August - Three River Junction, WY
  • Average humidity in August: 50%

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 August
Three River Junction, WY

Average rainfall in August - Three River Junction, WY
  • Average rainfall in August: 1.14"

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 August
Three River Junction, WY

Average rainfall days in August - Three River Junction, WY
  • Average rainfall days in August: 11.9 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 August
Three River Junction, WY

Average snowfall in August - Three River Junction, WY
  • Average snowfall in August: 0.08"

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 August
Three River Junction, WY

Average snowfall days in August - Three River Junction, WY
  • Average snowfall days in August: 0.6 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 August /
Average sunshine in August
Three River Junction, WY

Average daylight in August / Average sunshine in August - Three River Junction, WY
  • Average daylight in August: 14h and 0min

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 August: 11h 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 August
Three River Junction, WY

Average sunshine days in August - Three River Junction, WY
  • Average sunshine days in August: 14.9 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 August
Three River Junction, WY

Average UV index in August - Three River Junction, WY
  • Average UV index in August: 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 August
Three River Junction, WY

Average cloud cover in August - Three River Junction, WY
  • Average cloud cover in August: 17

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 August
Three River Junction, WY

Average visibility in August - Three River Junction, WY
  • Average visibility in August: 6mi

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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