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's arrival signals a distinct temperature shift, dropping from a pleasant 72.3°F (22.4°C) in September to a mild 56.7°F (13.7°C). An average nighttime temperature of 39.4°F (4.1°C) is witnessed throughout October.Humidity
In October, the average relative humidity is 55%.Rainfall
In Riley, in October, it is raining for 9.2 days, with typically 0.75" (19mm) of accumulated precipitation. Throughout the year, there are 125.1 rainfall days, and 11.26" (286mm) of precipitation is accumulated.Snowfall
In Riley, snow does not fall in April through October.Daylight
The average length of the day in October is 11h and 0min.On the first day of the month, sunrise is at 6:56 am and sunset at 6:38 pm. On the last day of October, sunrise is at 7:33 am and sunset at 5:49 pm PDT.
Sunshine
In Riley, the average sunshine in October is 7.1h.UV index
In Riley, 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 rays for average individuals.Note: In October, the maximum UV index of 3 suggests this advice:
Undertake precautions - It is suggested to shield oneself from sunburn. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in October?
What is the average humidity in October?
How many days does it rain in October?
When it does not snow?
Does it snow in October?
What is the average length of the day in October?
What time are sunrise and sunset in October?
How many hours of sunshine does Riley have in October?
How high is the UV index in October?
Average temperature in October
Riley, OR
- Average high temperature in October: 56.7°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is December (33.1°F).
- Average low temperature in October: 39.4°F
The month with the highest average low temperature is August (58.1°F).
The coldest month (with the lowest average low temperature) is December (21.2°F).
Average pressure in October
Riley, OR
- Average pressure in October: 30.06"Hg
The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is August (29.94"Hg).
Average wind speed in October
Riley, OR
- Average wind speed in October: 8mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.5mph).
Average humidity in October
Riley, OR
- Average humidity in October: 55%
The month with the highest relative humidity is December (83%).
The months with the lowest relative humidity are July and August (33%).
Average rainfall in October
Riley, OR
- Average rainfall in October: 0.75"
The wettest month (with the highest rainfall) is December (1.54").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in October
Riley, OR
- Average rainfall days in October: 9.2 days
The month with the highest number of rainy days is March (17.7 days).
The month with the least rainy days is August (3.3 days).
Average snowfall in October
Riley, OR
- Average snowfall in October: 0"
The month with the highest snowfall is December (0.87").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in October
Riley, OR
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is December (3.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in October /
Average sunshine in October
Riley, OR
- Average daylight in October: 11h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in October: 7h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in October
Riley, OR
- Average sunshine days in October: 20 days
The months with the most sunshine days are July and August (25.3 days).
The month with the least sunshine days is March (11.5 days).
Average UV index in October
Riley, OR
- 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, March, November and December (UV index 2).
Average cloud cover in October
Riley, OR
- Average cloud cover in October: 24
The month with the most cloud cover is December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility in October
Riley, OR
- 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).
Riley, Oregon, USA
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