October weather forecast
Riverton, WY

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Weather in October

October sees a significant drop in temperature in Riverton, laying solid grounds for the upcoming winter season. The town bathes in the warm glow of the setting sun that gets noticeably earlier every day, signaling the call of winter. The specter of frost touches upon the town, accompanied by winds that howl louder in the deafening quiet of the month. The cloud covers thicken, hastening the dusk and the advent of cooler days. Draped in hues of fall, October is the final encore before winter takes the stage.

Temperature

Riverton in October sees a clear temperature decline, with average high-temperatures decreasing from a warm 75.6°F (24.2°C) in September to a mild 57.7°F (14.3°C). Throughout the month of October, Riverton observes an average nighttime temperature of 38.3°F (3.5°C).

Humidity

In Riverton, the average relative humidity in October is 48%.

Rainfall

In Riverton, in October, it is raining for 4.9 days, with typically 0.47" (12mm) of accumulated precipitation. Throughout the year, there are 67.3 rainfall days, and 6.93" (176mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, September through December. In Riverton, Wyoming, during October, snow falls for 3.1 days and regularly aggregates up to 1.26" (32mm) of snow. In Riverton, during the entire year, snow falls for 42.8 days and aggregates up to 25.47" (647mm) of snow.

Daylight

In October, the average length of the day is 11h and 1min.
On the first day of the month, sunrise is at 7:11 am and sunset at 6:54 pm. On the last day of October, sunrise is at 7:47 am and sunset at 6:06 pm MDT.

Sunshine

In Riverton, the average sunshine in October is 7.2h.

UV index

In October, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index of 3 during October leads to these instructions:
Undertake protective steps - Preventing sun damage is advised. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Enhance your sun protection with tightly woven, yet airy clothing. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.

Frequently asked questions

What is the usual temperature for Riverton in October?

The high-temperature, in October, in Riverton, is 57.7°F (14.3°C), while the low-temperature averages to 38.3°F (3.5°C).

What is the average humidity in October?

In Riverton, the average relative humidity in October is 48%.

How much does it rain in October?

In Riverton, Wyoming, during October, the rain falls for 4.9 days and regularly aggregates up to 0.47" (12mm) of precipitation.

How much does it snow in October?

In Riverton, in October, during 3.1 snowfall days, 1.26" (32mm) of snow is typically accumulated.

How many hours of daylight does Riverton have in October?

In October, the average day length is 11h and 1min.

When are sunrise and sunset in October?

In October, on the first day of the month, sunrise is at 7:11 am and sunset at 6:54 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 6:06 pm MDT.

How long on average sun shines in October?

In Riverton, the average sunshine duration in October is 7.2h.

What is the UV index reading in October?

The average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe 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 October
Riverton, WY

Average temperature in October - Riverton, WY
  • Average high temperature in October: 57.7°F

The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is December (30.9°F).

  • Average low temperature in October: 38.3°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (14.5°F).

Average pressure in October
Riverton, WY

Average pressure in October - Riverton, WY
  • Average pressure in October: 30.03"Hg

The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed in October
Riverton, WY

Average wind speed in October - Riverton, WY
  • Average wind speed in October: 6.5mph

The windiest month (with the highest average wind speed) is June (7.5mph).
The calmest month (with the lowest average wind speed) is January (5.5mph).

Average humidity in October
Riverton, WY

Average humidity in October - Riverton, WY
  • Average humidity in October: 48%

The month with the highest relative humidity is January (77%).
The months with the lowest relative humidity are July and August (31%).

Average rainfall in October
Riverton, WY

Average rainfall in October - Riverton, WY
  • Average rainfall in October: 0.47"

The wettest month (with the highest rainfall) is May (1.42").
The driest month (with the least rainfall) is January (0.24").

Average rainfall days in October
Riverton, WY

Average rainfall days in October - Riverton, WY
  • Average rainfall days in October: 4.9 days

The month with the highest number of rainy days is May (9.9 days).
The month with the least rainy days is January (2.5 days).

Average snowfall in October
Riverton, WY

Average snowfall in October - Riverton, WY
  • Average snowfall in October: 1.26"

The month with the highest snowfall is April (5.39").
The months with the least snowfall are June, July and August (0").

Average snowfall days in October
Riverton, WY

Average snowfall days in October - Riverton, WY
  • Average snowfall days in October: 3.1 days

The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in October /
Average sunshine in October
Riverton, WY

Average daylight in October / Average sunshine in October - Riverton, WY
  • Average daylight in October: 11h and 0min

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 October: 7h and 1min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 36min).

Average sunshine days in October
Riverton, WY

Average sunshine days in October - Riverton, WY
  • Average sunshine days in October: 22.5 days

The month with the most sunshine days is January (24.5 days).
The month with the least sunshine days is April (15.5 days).

Average UV index in October
Riverton, WY

Average UV index in October - Riverton, WY
  • Average UV index in October: 3

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in October
Riverton, WY

Average cloud cover in October - Riverton, WY
  • Average cloud cover in October: 20

The months with the most cloud cover are February and April (Cloud cover 28).
The months with the least cloud cover are July and August (Cloud cover 12).

Average visibility in October
Riverton, WY

Average visibility in October - Riverton, WY
  • Average visibility in October: 6mi

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

Riverton, Wyoming, USA

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