October weather forecastCastlewood, SD
October
Weather in October
October, like September, in Castlewood, South Dakota, is another fresh autumn month, with an average temperature fluctuating between 54.3°F (12.4°C) and 39°F (3.9°C).Temperature
October's arrival sees a clear drop in the average high-temperature, decreasing from September's agreeable 71.6°F (22°C) to a fresh 54.3°F (12.4°C). Castlewood encounters a steady low-temperature average of 39°F (3.9°C) throughout the month of October.Humidity
September and October, with an average relative humidity of 68%, are the least humid months in Castlewood.Rainfall
In Castlewood, in October, during 8.3 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. Throughout the year, there are 112.3 rainfall days, and 18.78" (477mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 2.3 snowfall days, it receives 0.94" (24mm) of snow. In Castlewood, during the entire year, snow falls for 64.3 days and aggregates up to 17.56" (446mm) of snow.Daylight
The average length of the day in October is 10h and 58min.On the first day of October, sunrise is at 7:27 am and sunset at 7:08 pm. On the last day of the month, sunrise is at 8:05 am and sunset at 6:17 pm CDT.
Sunshine
In Castlewood, the average sunshine in October is 6h.UV index
In Castlewood, the average daily maximum UV index in October is 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index, 2 in October, converts into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Castlewood, SD
- Average high temperature in October: 54.3°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (19.4°F).
- Average low temperature in October: 39°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (5.5°F).
Average pressure in October
Castlewood, SD
- Average pressure in October: 29.98"Hg
The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in October
Castlewood, SD
- Average wind speed in October: 11.2mph
The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest month (with the lowest average wind speed) is July (8.5mph).
Average humidity in October
Castlewood, SD
- Average humidity in October: 68%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are September and October (68%).
Average rainfall in October
Castlewood, SD
- Average rainfall in October: 1.73"
The wettest month (with the highest rainfall) is June (3.19").
The driest months (with the least rainfall) are January and February (0.59").
Average rainfall days in October
Castlewood, SD
- Average rainfall days in October: 8.3 days
The month with the highest number of rainy days is June (17.2 days).
The month with the least rainy days is February (2.7 days).
Average snowfall in October
Castlewood, SD
- Average snowfall in October: 0.94"
The months with the highest snowfall are January and December (3.74").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Castlewood, SD
- Average snowfall days in October: 2.3 days
The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in October /
Average sunshine in October
Castlewood, 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 0min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in October
Castlewood, SD
- Average sunshine days in October: 19.1 days
The month with the most sunshine days is October (19.1 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in October
Castlewood, SD
- Average UV index in October: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in October
Castlewood, SD
- Average cloud cover in October: 37
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in October
Castlewood, SD
- Average visibility in October: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
