Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
October is characterized by a noticeable reduction in the average high-temperature, falling from a warm 75.4°F (24.1°C) in September to a mild 56.7°F (13.7°C). An average low-temperature of 41.2°F (5.1°C) is observed during October nights.Humidity
In October, the average relative humidity in Opal, South Dakota, is 58%.Rainfall
In Opal, in October, during 7.4 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. Throughout the year, there are 99.7 rainfall days, and 16.06" (408mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. October is the first month it typically snows in Opal. Throughout October, in the average 2.5 snowfall days, it receives 1.3" (33mm) of snow. In Opal, during the entire year, snow falls for 58.3 days and aggregates up to 22.95" (583mm) of snow.Daylight
The average length of the day in October is 10h and 57min.On the first day of October in Opal, sunrise is at 6:48 am and sunset at 6:29 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:39 pm MDT.
Sunshine
In Opal, the average sunshine in October is 6.9h.UV index
In Opal, South Dakota, the average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 3 during October translates into these guidelines:
Ensure safety - Imperative it is to shield skin and eyes from damage. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Opal in October?
What is the average humidity in October in Opal?
How many days does it rain in October in Opal?
When does it start to snow in Opal?
What is the average length of the day in October in Opal?
When is the sunrise / sunset in October in Opal?
How long on average sun shines in October in Opal?
What is the UV index intensity in October in Opal?
Average temperature in October
Opal, SD
- Average high temperature in October: 56.7°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in October: 41.2°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure in October
Opal, SD
- Average pressure in October: 29.98"Hg
The months with the highest atmospheric pressure are January and February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in October
Opal, SD
- Average wind speed in October: 12.1mph
The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest months (with the lowest average wind speed) are February and August (10.4mph).
Average humidity in October
Opal, SD
- Average humidity in October: 58%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are August and September (49%).
Average rainfall in October
Opal, SD
- Average rainfall in October: 1.34"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in October
Opal, SD
- Average rainfall days in October: 7.4 days
The month with the highest number of rainy days is May (14.7 days).
The months with the least rainy days are January and February (3.3 days).
Average snowfall in October
Opal, SD
- Average snowfall in October: 1.3"
The month with the highest snowfall is February (5.12").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Opal, SD
- Average snowfall days in October: 2.5 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Opal, SD
- Average daylight in October: 10h and 5min
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 July (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in October
Opal, SD
- Average sunshine days in October: 19.9 days
The month with the most sunshine days is September (20.4 days).
The month with the least sunshine days is April (12.4 days).
Average UV index in October
Opal, SD
- Average UV index in October: 3
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in October
Opal, SD
- Average cloud cover in October: 31
The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 19).
Average visibility in October
Opal, 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).
Opal, South Dakota, USA
Weather forecast for your location
2. Allow the app to use your location