October weather forecast
Casper, WY

The calm North Platte River flowing through downtown Casper in Wyoming
The calm North Platte River flowing through downtown Casper in Wyoming

Weather in October

October, like September, in Casper, Wyoming, is another fresh autumn month, with an average temperature ranging between max 54.3°F (12.4°C) and min 36.5°F (2.5°C).

Temperature

In October, the average high-temperature declines considerably from a pleasant 72.7°F (22.6°C) in September to a fresh 54.3°F (12.4°C). In Casper, Wyoming, the average low-temperature is 36.5°F (2.5°C).

Humidity

In October, the average relative humidity is 55%.

Rainfall

In October, the rain falls for 7.2 days. Throughout October, 0.98" (25mm) of precipitation is accumulated. In Casper, during the entire year, the rain falls for 91.6 days and collects up to 9.69" (246mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. In October, it is snowing for 5.3 days. Throughout October, 3.58" (91mm) of snow is accumulated. Throughout the year, there are 61.5 snowfall days, and 32.13" (816mm) of snow is accumulated.

Daylight

In October, the average length of the day in Casper is 11h and 2min.
On the first day of October, sunrise is at 7:02 am and sunset at 6:47 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 5:59 pm MDT.

Sunshine

The average sunshine in October in Casper is 7h.

UV index

January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Casper, Wyoming. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 2 in October interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. 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.
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FAQ

What is the temperature in October in Casper?

In Casper, in October, the average high-temperature is 54.3°F (12.4°C), and the average low-temperature is 36.5°F (2.5°C).

What is the average humidity in October in Casper?

The average relative humidity in October in Casper is 55%.

How many days does it rain in October in Casper?

In Casper, Wyoming, in October, during 7.2 rainfall days, 0.98" (25mm) of precipitation is typically accumulated.

How many days does it snow in October in Casper?

In Casper, Wyoming, in October, snow falls for 5.3 days, with typically accumulated 3.58" (91mm) of snow.

What is the average length of the day in October in Casper?

The average day length in October in Casper is 11h and 2min.

When is the sunrise / sunset in October in Casper?

In October, on the first day of the month, sunrise is at 7:02 am and sunset at 6:47 pm. On the last day of the month, in Casper, sunrise is at 7:38 am and sunset at 5:59 pm MDT.

How long on average sun shines in October in Casper?

The average sunshine duration in October in Casper is 7h.

When is the lowest UV index in Casper?

January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Casper, Wyoming.

How high is the UV index in October in Casper?

In Casper, the average daily maximum UV index in October is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Casper, WY

Average temperature in October - Casper, WY
  • Average high temperature in October: 54.3°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is December (28.4°F).

  • Average low temperature in October: 36.5°F

The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is December (15.1°F).

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Average pressure in October
Casper, WY

Average pressure in October - Casper, WY
  • Average pressure in October: 30"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in October
Casper, WY

Average wind speed in October - Casper, WY
  • Average wind speed in October: 10.7mph

The windiest month (with the highest average wind speed) is January (12.1mph).
The calmest months (with the lowest average wind speed) are July and August (8.5mph).

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Average humidity in October
Casper, WY

Average humidity in October - Casper, WY
  • Average humidity in October: 55%

The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (37%).

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Average rainfall in October
Casper, WY

Average rainfall in October - Casper, WY
  • Average rainfall in October: 0.98"

The wettest month (with the highest rainfall) is May (1.77").
The driest months (with the least rainfall) are January, August and September (0.43").

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Average rainfall days in October
Casper, WY

Average rainfall days in October - Casper, WY
  • Average rainfall days in October: 7.2 days

The month with the highest number of rainy days is May (14.1 days).
The month with the least rainy days is January (3.6 days).

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Average snowfall in October
Casper, WY

Average snowfall in October - Casper, WY
  • Average snowfall in October: 3.58"

The month with the highest snowfall is November (5.47").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in October
Casper, WY

Average snowfall days in October - Casper, WY
  • Average snowfall days in October: 5.3 days

The month with the highest number of snowfall days is February (11.2 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in October / Average sunshine in October - Casper, WY
  • Average daylight in October: 11h and 2min

The month with the longest days is June (Average daylight: 15h and 17min).
The month with the shortest days is December (Average daylight: 9h and 5min).

  • Average sunshine in October: 7h and 0min

The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 6min).

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Average sunshine days in October
Casper, WY

Average sunshine days in October - Casper, WY
  • Average sunshine days in October: 18.5 days

The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is May (11.9 days).

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Average UV index in October
Casper, WY

Average UV index in October - Casper, WY
  • Average UV index in October: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

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Average cloud cover in October
Casper, WY

Average cloud cover in October - Casper, WY
  • Average cloud cover in October: 23

The month with the most cloud cover is February (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 13).

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Average visibility in October
Casper, WY

Average visibility in October - Casper, 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).

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