Weather forecast for tomorrowRainier, OR

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 64°F
  • 45°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 9%
  • Precipitation: 0"
  • Wind: 8mphNNW 346°
  • Humidity: 67%
  • UV index: 3
  • Sunrise: 7:33 am PDT
  • Sunset: 6:20 pm PDT
  • ▼
Tomorrow, on Sunday, mostly sunny skies are expected.
Rain is not forecasted. Temperature fluctuations between an enjoyable 64.4°F and a brisk 44.6°F are predicted.
Tomorrow's top temperature will be a few degrees higher than October's standard maximum of 59°F.
Sunrise will be at 7:33 am and sunset at 6:20 pm; tomorrow's daylight will last for 10h and 47min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 63°C.
Coldest hour: 6 am 41°C.

Chance of precipitation

Highest chance: 3 am - 6 am 21%.

Hourly weather forecast

  • 12 am
  • 48°F
  • Feels like:
    48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 9%
  • Precipitation: 0"
  • Wind: 2mphNW 316°
  • Humidity: 88%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 46°F
  • Feels like:
    46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 21%
  • Precipitation: 0"
  • Wind: 2mphNW 309°
  • Humidity: 92%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 45°F
  • Feels like:
    45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 21%
  • Precipitation: 0"
  • Wind: 2mphNW 319°
  • Humidity: 94%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 41°F
  • Feels like:
    41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 21%
  • Precipitation: 0"
  • Wind: 2mphNNW 334°
  • Humidity: 96%
  • Pressure: 30.18"Hg
  • Visibility: 8mi
  • UV index: 0
  • ▼
Sunrise: 7:33 am
  • 8 am
  • 41°F
  • Feels like:
    41°F
Sunny
Sunny
  • Precip. probability: 9%
  • Precipitation: 0"
  • Wind: 2mphNNW 343°
  • Humidity: 98%
  • Pressure: 30.15"Hg
  • Visibility: 7mi
  • UV index: 0
  • ▼
  • 10 am
  • 48°F
  • Feels like:
    46°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 5mphN 353°
  • Humidity: 81%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 57°F
  • Feels like:
    54°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 8mphN 351°
  • Humidity: 62%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 2 pm
  • 61°F
  • Feels like:
    61°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 8mphN 350°
  • Humidity: 51%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 63°F
  • Feels like:
    63°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphNNW 346°
  • Humidity: 47%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 61°F
  • Feels like:
    59°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphNNW 340°
  • Humidity: 50%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:20 pm
  • 8 pm
  • 54°F
  • Feels like:
    54°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 2mphNNW 337°
  • Humidity: 65%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 50°F
  • Feels like:
    50°F
Cloudy
Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 1mphNNW 327°
  • Humidity: 74%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, primarily dull and occasionally clear weather is forecasted.
The temperature will vary between the lowest temperature of 41°F and the highest temperature of 62.6°F. The warmest part of the day will be from 3 pm to 5 pm.
The highest temperature tomorrow will be slightly warmer than October's typical maximum temperature. Tomorrow, the lowest temperature will be also similar to October's usual minimum.
Updated: Oct 17, 2026 @ 15:54:50 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, in Rainier, sunshine will take center stage, with just faint traces of clouds.

No, it will not rain tomorrow.

Tomorrow, the maximum temperature will be 64.4°F, while the minimum temperature will be 44.6°F.
The highest temperature will be slightly warmer than the average maximum of 59°F in October. Tomorrow, the lowest temperature will be in line with the average low temperature.

On Sunday, in Rainier, sunrise will be at 7:33 am and sunset at 6:20 pm (PDT).

In Rainier, the length of the day tomorrow will be 10h and 47min.