October weather forecast
Three River Junction, WY

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Weather in October

October, like September, is another chilly autumn month in Three River Junction, Wyoming, with an average temperature fluctuating between 25°F (-3.9°C) and 43°F (6.1°C).

Temperature

As Three River Junction transitions into October, the average high-temperature shows a marked reduction, decreasing from an enjoyable 61.2°F (16.2°C) in September to a frosty 43°F (6.1°C). During October, Three River Junction records a consistent average nighttime temperature of 25°F (-3.9°C).

Humidity

In October, the average relative humidity is 74%.

Rainfall

In Three River Junction, during October, the rain falls for 6.5 days and regularly aggregates up to 1.54" (39mm) of 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. In Three River Junction, in October, snow falls for 14.4 days, with typically accumulated 10.2" (259mm) of snow. Throughout the year, there are 176.8 snowfall days, and 135.55" (3443mm) of snow is accumulated.

Daylight

The average length of the day in October is 10h and 58min.
On the first day of October, sunrise is at 7:22 am and sunset at 7:03 pm. On the last day of the month, sunrise is at 8:00 am and sunset at 6:13 pm MDT.

Sunshine

The average sunshine in October is 6.2h.

UV index

January through March, October through December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 1 during October morphs into the following directions:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Updated: Aug 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold does it get in October?

The average high-temperature, in October, in Three River Junction, is 43°F (6.1°C), while the average low-temperature is 25°F (-3.9°C).

What is the average humidity in October?

In October, the average relative humidity is 74%.

How much does it rain in October?

In Three River Junction, in October, during 6.5 rainfall days, 1.54" (39mm) of precipitation is typically accumulated.

How many days does it snow in October?

In October, in Three River Junction, it is snowing for 14.4 days. Throughout October, 10.2" (259mm) of snow is accumulated.

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

In October, the average day length is 10h and 58min.

When is the sunrise / sunset in October?

In October, on the first day of the month, sunrise is at 7:22 am and sunset at 7:03 pm. On the last day of the month, in Three River Junction, sunrise is at 8:00 am and sunset at 6:13 pm MDT.

How long on average sun shines in October?

In Three River Junction, the average sunshine duration in October is 6.2h.

What are the months with the lowest UV index?

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 1.

What is the UV index intensity in October?

In October, the average daily maximum UV index is 1. A UV Index estimate of 2, and below, represents a minimal hazard to health from unprotected exposure to 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 October
Three River Junction, WY

Average temperature in October - Three River Junction, WY
  • Average high temperature in October: 43°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 October: 25°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 October
Three River Junction, WY

Average pressure in October - Three River Junction, WY
  • Average pressure in October: 30.06"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 October
Three River Junction, WY

Average wind speed in October - Three River Junction, WY
  • Average wind speed in October: 6.5mph

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 October
Three River Junction, WY

Average humidity in October - Three River Junction, WY
  • Average humidity in October: 74%

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 October
Three River Junction, WY

Average rainfall in October - Three River Junction, WY
  • Average rainfall in October: 1.54"

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 October
Three River Junction, WY

Average rainfall days in October - Three River Junction, WY
  • Average rainfall days in October: 6.5 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 October
Three River Junction, WY

Average snowfall in October - Three River Junction, WY
  • Average snowfall in October: 10.2"

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 October
Three River Junction, WY

Average snowfall days in October - Three River Junction, WY
  • Average snowfall days in October: 14.4 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 October /
Average sunshine in October
Three River Junction, WY

Average daylight in October / Average sunshine in October - Three River Junction, WY
  • Average daylight in October: 11h 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 October: 6h and 1min

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 October
Three River Junction, WY

Average sunshine days in October - Three River Junction, WY
  • Average sunshine days in October: 14 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 October
Three River Junction, WY

Average UV index in October - Three River Junction, WY
  • Average UV index in October: 1

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 October
Three River Junction, WY

Average cloud cover in October - Three River Junction, WY
  • Average cloud cover in October: 38

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 October
Three River Junction, WY

Average visibility in October - Three River Junction, WY
  • Average visibility in October: 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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