Weather forecast for tomorrowForest Grove, OR

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 66°F
  • 43°F
AM Fog / PM Sun
AM Fog / PM Sun
  • Precip. probability: 18%
  • Precipitation: 0"
  • Wind: 6mphN 356°
  • Humidity: 58%
  • UV index: 3
  • Sunrise: 7:33 am PDT
  • Sunset: 6:21 pm PDT
  • ▼
On Sunday, October 18, misty weather in the morning will give way to a bright and clear afternoon.
The highest temperature will be a comfortable 66.2°F, while the lowest predicted temperature is a frosty 42.8°F.
The higher temperature of 66.2°F is more typical of September than October.
Sunrise will be at 7:33 am and sunset at 6:21 pm; tomorrow's daylight will last for 10h and 49min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 64°C.
Coldest hour: 6 am 43°C.

Chance of precipitation

Highest chance: 9 am 18%.

Hourly weather forecast

  • 12 am
  • 48°F
  • Feels like:
    46°F
Clear
Clear
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 6mphNW 315°
  • Humidity: 77%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 46°F
  • Feels like:
    45°F
Clear
Clear
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 4mphNW 314°
  • Humidity: 83%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 45°F
  • Feels like:
    41°F
Clear
Clear
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 4mphNW 322°
  • Humidity: 89%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 43°F
  • Feels like:
    41°F
Clear
Clear
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 4mphNW 325°
  • Humidity: 88%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:33 am
  • 8 am
  • 43°F
  • Feels like:
    39°F
Foggy
Foggy
  • Precip. probability: 19%
  • Precipitation: 0"
  • Wind: 4mphNNW 333°
  • Humidity: 87%
  • Pressure: 30.15"Hg
  • Visibility: 0mi
  • UV index: 0
  • ▼
  • 10 am
  • 52°F
  • Feels like:
    50°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphN 351°
  • Humidity: 70%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 59°F
  • Feels like:
    57°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphNNE 16°
  • Humidity: 54%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 2 pm
  • 64°F
  • Feels like:
    64°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphN 1°
  • Humidity: 42%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 66°F
  • Feels like:
    66°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphN 3°
  • Humidity: 38%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 63°F
  • Feels like:
    63°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphN 351°
  • Humidity: 46%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:21 pm
  • 8 pm
  • 55°F
  • Feels like:
    55°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphNW 315°
  • Humidity: 57%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 52°F
  • Feels like:
    52°F
Cloudy
Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphWNW 292°
  • Humidity: 66%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, on Sunday, a combination of primarily cloudy and occasionally bright and foggy weather is predicted.
The temperature will vary between a minimum of 42.8°F and a maximum of 66.2°F. The warmest part of the day is anticipated around 4 pm.
The highest temperature is more in line with September's average maximum of 71.6°F than October's usual of 59.5°F. The expected low will be close to the average minimum in October, which is 43.9°F.
Updated: Oct 17, 2026 @ 21:29:02 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, misty weather in the morning will give way to a bright and clear afternoon.

Tomorrow, the highest temperature will be 66.2°F, while the lowest temperature will be 42.8°F.
The maximum temperature will be moderately higher than the average highest temperature of 59.5°F in October. The lowest temperature tomorrow will be in line with the average low temperature.

On Sunday, in Forest Grove, sunrise will be at 7:33 am and sunset at 6:21 pm (PDT).

In Forest Grove, tomorrow, there will be 10h and 49min of daylight.