Cheyenne
Wyoming, USA
Long-term weather forecast
Long-term weather forecast

October weather forecast and climate
Cheyenne, WY

A sunny day in the front of the State Capitol building in Cheyenne, Wyoming
A sunny day in the front of the State Capitol building in Cheyenne, Wyoming
October, the same as September, in Cheyenne, Wyoming, is another mild autumn month, with average temperature varying between 57.2°F (14°C) and 38.3°F (3.5°C).

Temperature

In Cheyenne, Wyoming, the average high-temperature declines considerably, from a warm 73.8°F (23.2°C) in September, to a moderate 57.2°F (14°C). In Cheyenne, the average low-temperature is 38.3°F (3.5°C).

Humidity

The average relative humidity is 51%.

Rainfall

In Cheyenne, in October, it is raining for 8 days, with typically 0.91" (23mm) of accumulated precipitation. Throughout the year, in Cheyenne, there are 116 rainfall days, and 14.57" (370mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 3.5 snowfall days, it receives 2.17" (55mm) of snow. Throughout the year, there are 62 snowfall days, and 30.51" (775mm) of snow is accumulated.

Daylight

In Cheyenne, the average length of the day is 11.1h.

Sunshine

The average sunshine in Cheyenne is 7.3h.

UV index

In Cheyenne, the average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV rays for the average person.
Note: In October, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in October in Cheyenne?

In Cheyenne, in October, the average high-temperature is 57.2°F (14°C), and the average low-temperature is 38.3°F (3.5°C).

What is the average humidity in October in Cheyenne?

In October, the average relative humidity in Cheyenne, Wyoming, is 51%.

How much does it rain in Cheyenne in October?

In October, the rain falls for 8 days. Throughout October, 0.91" (23mm) of precipitation is accumulated.

When does it start snowing in Cheyenne?

October is the first month it typically snows. Throughout October, in the average 3.5 snowfall days, it receives 2.17" (55mm) of snow.

How many hours of daylight does Cheyenne have in October?

The average length of the day in October in Cheyenne is 11.1h.

How many hours of sunshine does Cheyenne have in October?

In October, the average sunshine in Cheyenne is 7.3h.

How high is the UV index in October in Cheyenne?

In Cheyenne, Wyoming, the average daily maximum UV index in October is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV rays.
Average temperature in October - Cheyenne, WY
  • Average high temperature in October: 14°C

The warmest month (with the highest average high temperature) is July (28°C).
The month with the lowest average high temperature is December (1.5°C).

  • Average low temperature in October: 3.5°C

The month with the highest average low temperature is July (15.5°C).
The coldest month (with the lowest average low temperature) is December (-6.5°C).

Average humidity in October - Cheyenne, WY
  • Average humidity in October: 51%

The month with the highest relative humidity is February (64%).
The month with the lowest relative humidity is August (43%).

Average rainfall in October - Cheyenne, WY
  • Average rainfall in October: 23mm

The wettest month (with the highest rainfall) is May (75mm).
The driest month (with the lowest rainfall) is January (11mm).

Average rainfall days in October - Cheyenne, WY
  • Average rainfall days in October: 8 days

The month with the highest number of rainy days is May (17.5 days).
The month with the lowest number of rainy days is January (4.7 days).

Average snowfall in October - Cheyenne, WY
  • Average snowfall in October: 55mm

The month with the highest snowfall is March (154mm).
Months with the lowest snowfall are June, July, August and September (0mm).

Average snowfall days in October - Cheyenne, WY
  • Average snowfall days in October: 3.5 days

The month with the highest number of snowfall days is February (11.3 days).
Months with the lowest number of snowfall days are June, July and August (0 days).

Average daylight in October / Average sunshine in October - Cheyenne, WY
  • Average daylight in October: 11.1h

The month with the longest days is June (Average daylight: 15.1h).
The month with shortest days is December (Average daylight: 9.3h).

  • Average sunshine in October: 7.3h

Months with most sunshine are July and August (Average sunshine: 11.6h).
The month with least sunshine is February (Average sunshine: 6.5h).

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

Months with the highest UV index are July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).