Weather forecast for 10 daysO'Brien, OR

Weather forecast for the weekend

Saturday Oct 17, 2026

  • min.
  • 46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 21%
  • Precipitation: 0"
  • Wind: 7mphNE 38°
  • Humidity: 72%
  • UV index: 0
  • Sunrise: 7:30 am PDT
  • Sunset: 6:30 pm PDT
  • ▼
In O'Brien, for the rest of Saturday, thin clouds will pass through at times, but overall, it will remain bright.
The lowest forecasted temperature is a chilly 46.4°F.
Sunrise was at 7:30 am and sunset will be at 6:30 pm; the daylight will last for 11h and 0min.

Sunday Oct 18, 2026

  • 72°F
  • 43°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 7mphSSE 158°
  • Humidity: 67%
  • UV index: 4
  • Sunrise: 7:31 am PDT
  • Sunset: 6:28 pm PDT
  • ▼
On Sunday, October 18, blue skies and warm sunshine will define the conditions.
Daytime will experience a high of a pleasant 71.6°F, significantly differing from the forecasted night low of a chilly 42.8°F.
Temperatures are higher than average, more in line with September's norm of 68.7°F than with October's 62.6°F.
Sunrise will be at 7:31 am and sunset at 6:28 pm; tomorrow's daylight will last for 10h and 58min.

10-day overview

Daily temperatures

Warmest day: today 77°C.
Coldest period: Saturday - Monday 59°C.

Chance of precipitation

Highest chance: Saturday 24.10. 38%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • min.
  • 46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 21%
  • Precipitation: 0"
  • Wind: 7mphNE 38°
  • Humidity: 72%
  • UV index: 0
  • Sunrise: 7:30 am PDT
  • Sunset: 6:30 pm PDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 72°F
  • 43°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 7mphSSE 158°
  • Humidity: 67%
  • UV index: 4
  • Sunrise: 7:31 am PDT
  • Sunset: 6:28 pm PDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 64°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 5mphSSW 208°
  • Humidity: 55%
  • UV index: 3
  • Sunrise: 7:32 am PDT
  • Sunset: 6:27 pm PDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 72°F
  • 45°F
AM Clouds / PM Sun
AM Clouds / PM Sun
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 4mphNE 48°
  • Humidity: 53%
  • UV index: 3
  • Sunrise: 7:33 am PDT
  • Sunset: 6:25 pm PDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 73°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 9%
  • Precipitation: 0"
  • Wind: 4mphS 179°
  • Humidity: 46%
  • UV index: 4
  • Sunrise: 7:34 am PDT
  • Sunset: 6:23 pm PDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 66°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 6mphSSW 208°
  • Humidity: 60%
  • UV index: 4
  • Sunrise: 7:35 am PDT
  • Sunset: 6:22 pm PDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 61°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 13%
  • Precipitation: 0"
  • Wind: 6mphNE 40°
  • Humidity: 62%
  • UV index: 4
  • Sunrise: 7:37 am PDT
  • Sunset: 6:21 pm PDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 59°F
  • 37°F
PM Showers
PM Showers
  • Precip. probability: 38%
  • Precipitation: 0.2"
  • Wind: 6mphS 171°
  • Humidity: 63%
  • UV index: 3
  • Sunrise: 7:38 am PDT
  • Sunset: 6:19 pm PDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 59°F
  • 37°F
AM Showers
AM Showers
  • Precip. probability: 34%
  • Precipitation: 0.04"
  • Wind: 5mphS 179°
  • Humidity: 67%
  • UV index: 3
  • Sunrise: 7:39 am PDT
  • Sunset: 6:18 pm PDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 59°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 19%
  • Precipitation: 0"
  • Wind: 5mphS 178°
  • Humidity: 64%
  • UV index: 3
  • Sunrise: 7:40 am PDT
  • Sunset: 6:16 pm PDT
  • ▼
For the next ten days, a combination of gloomy, sun-filled and damp weather is expected.
Rainfall is forecasted for next Saturday and Sunday.
Expect a substantial fluctuation in daytime highs over the next several days. Highs will range from 59°F to 73.4°F, while the lowest temperature will be between 37.4°F and 46.4°F.
Expect the warmest day on Wednesday, with temperatures peaking at 73.4°F; next Saturday through next Monday, with the highest temperature of 59°F, will be the coldest days.
Updated: Oct 17, 2026 @ 22:54:05 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, sunshine will prevail for most of the day.

Tomorrow, the highest temperature will be 71.6°F, while the lowest temperature will be 42.8°F.
Tomorrow, the highest temperature will be a few degrees higher than the average maximum temperature in October. Tomorrow, the lowest temperature will be also a couple of degrees lower than the average low temperature.

On Sunday, in O'Brien, sunrise will be at 7:31 am and sunset at 6:28 pm (PDT).

In O'Brien, the length of the day tomorrow will be 10h and 58min.