Weather forecast for tomorrowChehalis, WA

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 61°F
  • 43°F
AM Fog / PM Sun
AM Fog / PM Sun
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 8mphNNE 16°
  • Humidity: 72%
  • UV index: 3
  • Sunrise: 7:34 am PDT
  • Sunset: 6:19 pm PDT
  • ▼
Tomorrow, patchy morning fog will clear, leading to a pleasant, sun-filled afternoon.
The maximum temperature will be an enjoyable 60.8°F, while the minimum temperature will be a frosty 42.8°F.
Forecasts show that tomorrow the temperature will align with October's standard maximum of 58.8°F.
Sunrise will be at 7:34 am and sunset at 6:19 pm; tomorrow's daylight will last for 10h and 46min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 61°C.
Coldest hour: 6 am 41°C.

Chance of precipitation

Highest chance: 9 am 14%.

Hourly weather forecast

  • 12 am
  • 46°F
  • Feels like:
    46°F
Mostly Clear
Mostly Clear
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 1mphNNW 328°
  • Humidity: 97%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 45°F
  • Feels like:
    45°F
Clear
Clear
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 1mphNNW 331°
  • Humidity: 97%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 43°F
  • Feels like:
    43°F
Clear
Clear
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 2mphNNW 341°
  • Humidity: 100%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 41°F
  • Feels like:
    41°F
Clear
Clear
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 2mphN 349°
  • Humidity: 100%
  • Pressure: 30.18"Hg
  • Visibility: 4mi
  • UV index: 0
  • ▼
Sunrise: 7:34 am
  • 8 am
  • 41°F
  • Feels like:
    39°F
Foggy
Foggy
  • Precip. probability: 21%
  • Precipitation: 0"
  • Wind: 4mphN 0°
  • Humidity: 100%
  • Pressure: 30.18"Hg
  • Visibility: 0mi
  • UV index: 0
  • ▼
  • 10 am
  • 48°F
  • Feels like:
    46°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 5mphNNE 13°
  • Humidity: 92%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 55°F
  • Feels like:
    54°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 8mphNNE 24°
  • Humidity: 71%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 2 pm
  • 59°F
  • Feels like:
    59°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 7mphNNE 27°
  • Humidity: 55%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 61°F
  • Feels like:
    59°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphNNE 23°
  • Humidity: 50%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 57°F
  • Feels like:
    57°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphNNE 21°
  • Humidity: 57%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:19 pm
  • 8 pm
  • 52°F
  • Feels like:
    52°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 2mphNNE 22°
  • Humidity: 78%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 48°F
  • Feels like:
    48°F
Cloudy
Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 2mphNNE 22°
  • Humidity: 84%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, a combination of primarily gloomy and occasionally mostly clear and misty weather is predicted.
The temperature will be between a minimum of 41°F and a maximum of 60.8°F. The warmest part of the day will be at 3 pm and 4 pm.
The forecasted high will be in line with the typical October maximum of 58.8°F. The expected low will be also comparable to the average minimum in October, which is 42.1°F.
Updated: Oct 17, 2026 @ 17:37:56 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, morning fog will limit visibility, but conditions will improve with sunshine later in the day.

Tomorrow, the maximum temperature in Chehalis will be 60.8°F, while the minimum temperature will be 42.8°F.
The highest temperature tomorrow will be in line with the average maximum temperature in October. The lowest temperature will be also in line with the average low of 42.1°F.

On Sunday, in Chehalis, sunrise will be at 7:34 am and sunset at 6:19 pm (PDT).

In Chehalis, the length of the day tomorrow will be 10h and 46min.