October weather forecastTri-City, OR
October
Weather in October
October, like September, in Tri-City, Oregon, is another enjoyable autumn month, with an average temperature fluctuating between 63.5°F (17.5°C) and 40.8°F (4.9°C).Temperature
As October commences, the average high-temperature shows a reduction, transitioning from a warm 74.5°F (23.6°C) in September to a refreshing 63.5°F (17.5°C). Nightfall in October introduces a considerable dip in temperature, settling at an average of 40.8°F (4.9°C).Humidity
In October, the average relative humidity is 76%.Rainfall
In Tri-City, in October, it is raining for 6.1 days, with typically 0.39" (10mm) of accumulated precipitation. Throughout the year, there are 93.9 rainfall days, and 7.64" (194mm) of precipitation is accumulated.Snowfall
In Tri-City, snow does not fall in April through October.Daylight
The average length of the day in October is 11h and 1min.On the first day of October, sunrise is at 7:11 am and sunset at 6:53 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 6:06 pm PDT.
Sunshine
In October, the average sunshine is 5.8h.UV index
In Tri-City, the average daily maximum UV index in October is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 3 during October translates into these guidelines:
Take precautions - Protection against sunburn is recommended. To avoid the Sun's strongest rays, limit exposure around the mid-day period. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Tri-City, OR
- Average high temperature in October: 63.5°F
The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (45.7°F).
- Average low temperature in October: 40.8°F
The month with the highest average low temperature is August (47.7°F).
The coldest month (with the lowest average low temperature) is December (32.2°F).
Average pressure in October
Tri-City, OR
- Average pressure in October: 30.05"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in October
Tri-City, OR
- Average wind speed in October: 3.3mph
The windiest month (with the highest average wind speed) is January (4.1mph).
The calmest month (with the lowest average wind speed) is September (3.2mph).
Average humidity in October
Tri-City, OR
- Average humidity in October: 76%
The months with the highest relative humidity are January, February and December (86%).
The month with the lowest relative humidity is August (69%).
Average rainfall in October
Tri-City, OR
- Average rainfall in October: 0.39"
The wettest months (with the highest rainfall) are January, February and December (1.1").
The driest months (with the least rainfall) are July and August (0.16").
Average rainfall days in October
Tri-City, OR
- Average rainfall days in October: 6.1 days
The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (2.4 days).
Average snowfall in October
Tri-City, OR
- Average snowfall in October: 0"
The month with the highest snowfall is February (0.87").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in October
Tri-City, OR
- Average snowfall days in October: 0 days
The month with the highest number of snowfall days is February (1.5 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
Tri-City, OR
- Average daylight in October: 11h and 0min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in October: 5h and 48min
The month with the most sunshine is August (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).
Average sunshine days in October
Tri-City, OR
- Average sunshine days in October: 23.2 days
The month with the most sunshine days is August (26.5 days).
The month with the least sunshine days is March (16.1 days).
Average UV index in October
Tri-City, OR
- 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, November and December (UV index 2).
Average cloud cover in October
Tri-City, OR
- Average cloud cover in October: 41
The month with the most cloud cover is March (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in October
Tri-City, OR
- Average visibility in October: 4mi
The months with the highest visibility are July, August and September (5mi).
The months with the lowest visibility are January, February, March, April, May, June, October, November and December (4mi).
