October weather forecastSpearfish, SD
October
Weather in October
October sees Spearfish gradually transitioning into a colder climate, with temperature highs dropping to a cool 54.5°F (12.5°C). The month initiates the return of snowfall, albeit small amounts, indicating winter's not-so-distant approach. The shorter daylight hours and reduced sunshine are clear signs of fall manifesting itself. Experiencing a higher frequency of rainy days and increasing wind speeds, October's weather sets the stage for the colder months ahead.Temperature
A shift in Spearfish's weather is noticeable as September turns into October, with the average high temperature decreasing from a pleasant 72.5°F (22.5°C) to a cool 54.5°F (12.5°C). Throughout October, the temperature falls to an average low of 38.3°F (3.5°C).Humidity
The average relative humidity in October in Spearfish is 61%.Rainfall
In October, in Spearfish, the rain falls for 8.1 days. Throughout October, 1.5" (38mm) of precipitation is accumulated. Throughout the year, in Spearfish, there are 99.6 rainfall days, and 15.63" (397mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. In Spearfish, in October, snow falls for 4.1 days, with typically accumulated 4.21" (107mm) of snow. In Spearfish, during the entire year, snow falls for 56.8 days and aggregates up to 36.3" (922mm) of snow.Daylight
In October, the average length of the day 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, in Spearfish, 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 is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The average daily UV index of 3 in October transforms into the following instructions:
Put precautions into practice - Guidance to elude sunburn is provided. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Enhance your sun protection with tightly woven, yet airy clothing. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Spearfish, SD
- Average high temperature in October: 54.5°F
The warmest month (with the highest average high temperature) is July (83.8°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°F).
The coldest month (with the lowest average low temperature) is February (16.2°F).
Average pressure in October
Spearfish, 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
Spearfish, SD
- Average wind speed in October: 10.1mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (8mph).
Average humidity in October
Spearfish, SD
- Average humidity in October: 61%
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (49%).
Average rainfall in October
Spearfish, SD
- Average rainfall in October: 1.5"
The wettest month (with the highest rainfall) is May (2.32").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in October
Spearfish, SD
- Average rainfall days in October: 8.1 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in October
Spearfish, SD
- Average snowfall in October: 4.21"
The month with the highest snowfall is April (7.36").
The months with the least snowfall are June, July and August (0").
Average snowfall days in October
Spearfish, SD
- Average snowfall days in October: 4.1 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).
Average daylight in October /
Average sunshine in October
Spearfish, 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 54min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).
Average sunshine days in October
Spearfish, SD
- Average sunshine days in October: 18.2 days
The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is May (12.7 days).
Average UV index in October
Spearfish, SD
- Average UV index in October: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, April, November and December (UV index 2).
Average cloud cover in October
Spearfish, SD
- Average cloud cover in October: 28
The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in October
Spearfish, 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).
