October weather forecast
Belle Fourche, SD

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Weather in October

Belle Fourche sees a distinct shift in weather in October, as fall sets in and temperatures continue to drop. The trees dress in autumn colors and days grow shorter. Despite the substantial decrease in temperatures, rainfall increases to 1.18" (30mm), indicating the onset of a wet period. The gusty winds pick up speed and bring a fresh nip in the air. With its lower temperatures and shorter days, October ushers in a more tranquil, reflective period for the city.

Temperature

October is marked by a distinct decrease in the average high-temperature, falling from a moderately hot 73.9°F (23.3°C) in September to a moderate 55.9°F (13.3°C). During October, Belle Fourche's temperature falls to a steady low-temperature average of 39.4°F (4.1°C).

Humidity

In Belle Fourche, the average relative humidity in October is 59%.

Rainfall

In October, the rain falls for 8.2 days. Throughout October, 1.18" (30mm) of precipitation is accumulated. Throughout the year, in Belle Fourche, South Dakota, there are 100 rainfall days, and 12.83" (326mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Belle Fourche are January through May, September through December. In Belle Fourche, during October, snow falls for 3.2 days and regularly aggregates up to 2.44" (62mm) of snow. In Belle Fourche, during the entire year, snow falls for 52.1 days and aggregates up to 23.54" (598mm) of snow.

Daylight

In October, the average length of the day in Belle Fourche, South Dakota, is 10h and 58min.
On the first day of the month, sunrise is at 6:54 am and sunset at 6:35 pm. On the last day of October, sunrise is at 7:32 am and sunset at 5:45 pm MDT.

Sunshine

In October, the average sunshine is 6.9h.

UV index

The average daily maximum UV index in October in Belle Fourche is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In October, the UV index of 3 transforms into the following advice:
Act with care - Obligation to protect against skin and eye damage is highlighted. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Belle Fourche in October?

Belle Fourche in October has an average high-temperature of 55.9°F (13.3°C) and an average low-temperature of 39.4°F (4.1°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, in August is appraised at 84.2°F (29°C).

What is the average humidity in October in Belle Fourche?

The average relative humidity in October in Belle Fourche is 59%.

How much does it rain in Belle Fourche in October?

In October, in Belle Fourche, the rain falls for 8.2 days. Throughout October, 1.18" (30mm) of precipitation is accumulated.

How much does it snow in Belle Fourche in October?

In Belle Fourche, South Dakota, during October, snow falls for 3.2 days and regularly aggregates up to 2.44" (62mm) of snow.

What is the average length of the day in October in Belle Fourche?

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

When is the sunrise / sunset in October in Belle Fourche?

In October, on the first day of the month, sunrise is at 6:54 am and sunset at 6:35 pm. On the last day of the month, in Belle Fourche, sunrise is at 7:32 am and sunset at 5:45 pm MDT.

How long on average sun shines in October in Belle Fourche?

The average sunshine duration in October is 6.9h.

How high is the UV index in October in Belle Fourche?

The average daily maximum UV index in October in Belle Fourche is 3. A UV Index value of 3 to 5 symbolizes a medium health risk 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
Belle Fourche, SD

Average temperature in October - Belle Fourche, SD
  • Average high temperature in October: 55.9°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is December (30.4°F).

  • Average low temperature in October: 39.4°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is February (17.1°F).

Average pressure in October
Belle Fourche, SD

Average pressure in October - Belle Fourche, SD
  • Average pressure in October: 29.98"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

Average wind speed in October
Belle Fourche, SD

Average wind speed in October - Belle Fourche, SD
  • Average wind speed in October: 10.4mph

The windiest months (with the highest average wind speed) are January and October (10.4mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).

Average humidity in October
Belle Fourche, SD

Average humidity in October - Belle Fourche, SD
  • Average humidity in October: 59%

The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (47%).

Average rainfall in October
Belle Fourche, SD

Average rainfall in October - Belle Fourche, SD
  • Average rainfall in October: 1.18"

The wettest month (with the highest rainfall) is May (2.05").
The driest month (with the least rainfall) is January (0.43").

Average rainfall days in October
Belle Fourche, SD

Average rainfall days in October - Belle Fourche, SD
  • Average rainfall days in October: 8.2 days

The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is January (2.8 days).

Average snowfall in October
Belle Fourche, SD

Average snowfall in October - Belle Fourche, SD
  • Average snowfall in October: 2.44"

The month with the highest snowfall is April (4.88").
The months with the least snowfall are June, July and August (0").

Average snowfall days in October
Belle Fourche, SD

Average snowfall days in October - Belle Fourche, SD
  • Average snowfall days in October: 3.2 days

The month with the highest number of snowfall days is February (10.3 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in October /
Average sunshine in October
Belle Fourche, SD

Average daylight in October / Average sunshine in October - Belle Fourche, SD
  • 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 5min

The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).

Average sunshine days in October
Belle Fourche, SD

Average sunshine days in October - Belle Fourche, SD
  • Average sunshine days in October: 19.2 days

The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is April (12.6 days).

Average UV index in October
Belle Fourche, SD

Average UV index in October - Belle Fourche, SD
  • Average UV index in October: 3

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, November and December (UV index 2).

Average cloud cover in October
Belle Fourche, SD

Average cloud cover in October - Belle Fourche, SD
  • Average cloud cover in October: 28

The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 15).

Average visibility in October
Belle Fourche, SD

Average visibility in October - Belle Fourche, SD
  • 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).

Belle Fourche, South Dakota, USA

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