Weather forecast for tomorrowPetersburg, OR

Weather forecast for tomorrow

Monday Oct 19, 2026

  • 64°F
  • 43°F
Cloudy
Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphWNW 292°
  • Humidity: 51%
  • UV index: 2
  • Sunrise: 7:26 am PDT
  • Sunset: 6:11 pm PDT
  • ▼
Tomorrow, on Monday, October 19, expect mostly gray skies with limited brightness.
The highest temperature will be a breezy 64.4°F, while the lowest temperature will be a brisk 42.8°F.
The anticipated peak temperature today will be relatively higher than the average October maximum of 57.9°F.
Sunrise will be at 7:26 am and sunset at 6:11 pm; tomorrow's daylight will last for 10h and 45min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 63°C.
Coldest period: 3 am - 6 am 46°C.

Chance of precipitation

Highest chance: 1%.

Hourly weather forecast

  • 12 am
  • 50°F
  • Feels like:
    50°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphENE 57°
  • Humidity: 53%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 48°F
  • Feels like:
    48°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 3mphSE 138°
  • Humidity: 59%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 46°F
  • Feels like:
    46°F
Cloudy
Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 3mphSSE 158°
  • Humidity: 63%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 46°F
  • Feels like:
    46°F
Cloudy
Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 3mphSW 224°
  • Humidity: 64%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:26 am
  • 8 am
  • 46°F
  • Feels like:
    46°F
Cloudy
Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 3mphWSW 243°
  • Humidity: 62%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 54°F
  • Feels like:
    54°F
Cloudy
Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphWNW 300°
  • Humidity: 55%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 57°F
  • Feels like:
    55°F
Cloudy
Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphNW 315°
  • Humidity: 52%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 2 pm
  • 61°F
  • Feels like:
    61°F
Cloudy
Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphWNW 298°
  • Humidity: 45%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 4 pm
  • 63°F
  • Feels like:
    63°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphWNW 294°
  • Humidity: 43%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 61°F
  • Feels like:
    61°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphNW 305°
  • Humidity: 46%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:11 pm
  • 8 pm
  • 55°F
  • Feels like:
    55°F
Cloudy
Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 2mphNW 308°
  • Humidity: 55%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 54°F
  • Feels like:
    54°F
Cloudy
Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphNW 324°
  • Humidity: 58%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, primarily gloomy and occasionally mostly clear weather is anticipated.
The temperature will vary between the lowest temperature of 46.4°F and the highest temperature of 62.6°F. The warmest part of the day will be from 3 pm to 5 pm.
The high will be slightly warmer than the normal maximum of 57.9°F for October. The expected low will be also close to the average minimum in October, which is 42.4°F.
Updated: Oct 18, 2026 @ 13:25:35 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, widespread cloud cover is expected.

Tomorrow, the maximum temperature will be 64.4°F, while the minimum temperature will be 42.8°F.
The highest temperature will be a few degrees higher than the average maximum of 57.9°F in October. The lowest temperature will be in line with the average low of 42.4°F.

On Monday, in Petersburg, sunrise will be at 7:26 am and sunset at 6:11 pm (PDT).

In Petersburg, tomorrow, there will be 10h and 45min of daylight.