October weather forecastSisters, OR
October
Weather in October
October in Sisters, Oregon recognizes the onset of a clear autumnal phase. The temperature comfortably nests at a cooler 55.8°F (13.2°C). The month characteristically dots the weather map with a smattering of rainfall events. Wind speed picks up the pace, claiming dominance after the lull of summer. A rise in humidity tags along, remaining in sync with reduced daylight hours, describing a contrasting atmospheric transition from the dry end of summer.Temperature
The arrival of October indicates a decrease in the average high-temperature, moving from an agreeable 69.8°F (21°C) in September to a mild 55.8°F (13.2°C). October witnesses an average nighttime temperature of 38.5°F (3.6°C).Humidity
The average relative humidity in October is 68%.Rainfall
In Sisters, during October, the rain falls for 12.7 days and regularly aggregates up to 1.73" (44mm) of precipitation. In Sisters, during the entire year, the rain falls for 142.1 days and collects up to 22.87" (581mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In October, it is snowing for 1.4 days. Throughout October, 0.71" (18mm) of snow is accumulated. In Sisters, during the entire year, snow falls for 70.7 days and aggregates up to 60.04" (1525mm) of snow.Daylight
The average length of the day in October is 10h and 58min.On the first day of the month, sunrise is at 7:04 am and sunset at 6:46 pm. On the last day of October, sunrise is at 7:43 am and sunset at 5:56 pm PDT.
Sunshine
The average sunshine in October is 6.5h.UV index
In Sisters, the average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 3 during October translates into the following directions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Sisters, OR
- Average high temperature in October: 55.8°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is December (36.5°F).
- Average low temperature in October: 38.5°F
The month with the highest average low temperature is August (50.7°F).
The coldest month (with the lowest average low temperature) is December (24.8°F).
Average pressure in October
Sisters, OR
- Average pressure in October: 30.06"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.98"Hg).
Average wind speed in October
Sisters, OR
- Average wind speed in October: 5.2mph
The windiest month (with the highest average wind speed) is February (6.1mph).
The calmest months (with the lowest average wind speed) are August and September (4.8mph).
Average humidity in October
Sisters, OR
- Average humidity in October: 68%
The month with the highest relative humidity is December (84%).
The months with the lowest relative humidity are July and August (53%).
Average rainfall in October
Sisters, OR
- Average rainfall in October: 1.73"
The wettest month (with the highest rainfall) is January (3.31").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in October
Sisters, OR
- Average rainfall days in October: 12.7 days
The month with the highest number of rainy days is March (16.9 days).
The month with the least rainy days is July (5 days).
Average snowfall in October
Sisters, OR
- Average snowfall in October: 0.71"
The month with the highest snowfall is February (13.74").
The months with the least snowfall are June, July and August (0").
Average snowfall days in October
Sisters, OR
- Average snowfall days in October: 1.4 days
The month with the highest number of snowfall days is December (14.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in October /
Average sunshine in October
Sisters, OR
- 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 30min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in October
Sisters, OR
- Average sunshine days in October: 15.7 days
The month with the most sunshine days is July (23.3 days).
The month with the least sunshine days is March (8.1 days).
Average UV index in October
Sisters, OR
- Average UV index in October: 3
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in October
Sisters, OR
- Average cloud cover in October: 32
The months with the most cloud cover are January, February, March and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility in October
Sisters, OR
- Average visibility in October: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
