Weather forecast for 10 daysPetersburg, OR

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 68°F
  • 45°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 8mphNE 55°
  • Humidity: 60%
  • UV index: 3
  • Sunrise: 7:25 am PDT
  • Sunset: 6:13 pm PDT
  • ▼
On Sunday, October 18, sunshine will prevail for most of the day.
Temperatures are forecasted to peak at a delightful 68°F and drop to a minimum of a chilly 44.6°F.
Meteorological data shows 68°F is more characteristic of September's climate profile than October's.
Sunrise will be at 7:25 am and sunset at 6:13 pm; the daylight will last for 10h and 49min.

10-day overview

Daily temperatures

Warmest period: Tuesday - Wednesday 70°C.
Coldest day: Saturday 55°C.

Chance of precipitation

Highest chance: Sunday 25.10. 34%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 68°F
  • 45°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 8mphNE 55°
  • Humidity: 60%
  • UV index: 3
  • Sunrise: 7:25 am PDT
  • Sunset: 6:13 pm PDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 64°F
  • 43°F
Cloudy
Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphWNW 289°
  • Humidity: 51%
  • UV index: 2
  • Sunrise: 7:26 am PDT
  • Sunset: 6:11 pm PDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 70°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 8mphENE 58°
  • Humidity: 47%
  • UV index: 3
  • Sunrise: 7:27 am PDT
  • Sunset: 6:10 pm PDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 70°F
  • 43°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 5mphN 353°
  • Humidity: 48%
  • UV index: 3
  • Sunrise: 7:29 am PDT
  • Sunset: 6:08 pm PDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 66°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 17mphWNW 293°
  • Humidity: 55%
  • UV index: 3
  • Sunrise: 7:30 am PDT
  • Sunset: 6:06 pm PDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 61°F
  • 37°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 15mphWNW 287°
  • Humidity: 54%
  • UV index: 3
  • Sunrise: 7:32 am PDT
  • Sunset: 6:05 pm PDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 55°F
  • 39°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 22%
  • Precipitation: 0"
  • Wind: 7mphNNW 329°
  • Humidity: 66%
  • UV index: 2
  • Sunrise: 7:33 am PDT
  • Sunset: 6:03 pm PDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 57°F
  • 39°F
AM Showers
AM Showers
  • Precip. probability: 34%
  • Precipitation: 0.04"
  • Wind: 7mphNW 317°
  • Humidity: 69%
  • UV index: 2
  • Sunrise: 7:34 am PDT
  • Sunset: 6:01 pm PDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 57°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 18%
  • Precipitation: 0"
  • Wind: 7mphNW 317°
  • Humidity: 64%
  • UV index: 2
  • Sunrise: 7:36 am PDT
  • Sunset: 6:00 pm PDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 57°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 12%
  • Precipitation: 0"
  • Wind: 7mphWNW 303°
  • Humidity: 69%
  • UV index: 3
  • Sunrise: 7:37 am PDT
  • Sunset: 5:58 pm PDT
  • ▼
cloudy, sunny and rainy weather is anticipated.
With a 34% probability, rainfall is predicted only for next Sunday. Forecasted precipitation will be minimal at 0.04".
Temperature fluctuation will be noticeable across the forecast period. The temperature is expected to swing from 55.4°F up to 69.8°F, while the forecast minimum temperature falls between 37.4°F and 44.6°F.
With a maximum temperature of 69.8°F, Tuesday and Wednesday will be the warmest days; the coldest day will be Saturday, with a maximum of 55.4°F.
Updated: Oct 18, 2026 @ 11:02:21 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, sun-filled skies will remain for most of the day.

Today, the highest temperature will be 68°F, while the lowest temperature will be 44.6°F.
Today, the maximum temperature will be uncommonly higher than the average highest temperature of 57.9°F in October. Today, the lowest temperature will be in line with the average low temperature.

On Sunday, in Petersburg, sunrise will be at 7:25 am and sunset at 6:13 pm (PDT).

In Petersburg, the length of the day today will be 10h and 49min.