Weather forecast for tomorrowHermiston, OR

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 66°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 7mphNNE 29°
  • Humidity: 51%
  • UV index: 3
  • Sunrise: 7:18 am PDT
  • Sunset: 6:06 pm PDT
  • ▼
Tomorrow, on Sunday, uninterrupted sunshine is anticipated.
The temperature is predicted to vary significantly from a high of an enjoyable 66.2°F to a low of a wintry 39.2°F.
Tomorrow, the expected peak temperature is set to be relatively higher than the typical October temperature of 61.7°F.
Sunrise will be at 7:18 am and sunset at 6:06 pm; tomorrow's daylight will last for 10h and 48min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 64°C.
Coldest hour: 6 am 37°C.

Chance of precipitation

Highest chance: 6 am 5%.

Hourly weather forecast

  • 12 am
  • 50°F
  • Feels like:
    48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphSSW 201°
  • Humidity: 72%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 45°F
  • Feels like:
    43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 4mphS 183°
  • Humidity: 83%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 41°F
  • Feels like:
    39°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 4mphS 188°
  • Humidity: 87%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 37°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 2mphSSE 158°
  • Humidity: 94%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:18 am
  • 8 am
  • 39°F
  • Feels like:
    39°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 2mphSE 139°
  • Humidity: 90%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 50°F
  • Feels like:
    50°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphWNW 284°
  • Humidity: 62%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 57°F
  • Feels like:
    57°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphN 358°
  • Humidity: 45%
  • Pressure: 30.12"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 2 pm
  • 63°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphNNE 24°
  • Humidity: 33%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 64°F
  • Feels like:
    64°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphNE 38°
  • Humidity: 28%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 61°F
  • Feels like:
    61°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphNNE 31°
  • Humidity: 33%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:06 pm
  • 8 pm
  • 50°F
  • Feels like:
    50°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 3mphENE 75°
  • Humidity: 50%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 46°F
  • Feels like:
    45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphSSE 160°
  • Humidity: 57%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, a combination of cloudy and bright weather is forecasted.
The temperature will vary between a minimum of 37.4°F and a maximum of 64.4°F. The warmest part of the day will be from 3 pm to 5 pm.
Tomorrow, the temperature is expected to be moderately higher than October's normal maximum of 61.7°F. The minimum temperature will be more in line with November's average low of 36.9°F than October's typical 46.8°F.
Updated: Oct 17, 2026 @ 15:10:43 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, expect consistent sunshine and open skies.

Tomorrow, the maximum temperature will be 66.2°F, while the minimum temperature will be 39.2°F.
Tomorrow, the highest temperature will be moderately higher than the average maximum temperature in October. The lowest temperature will be also moderately lower than the average low of 46.8°F.

On Sunday, in Hermiston, sunrise will be at 7:18 am and sunset at 6:06 pm (PDT).

In Hermiston, tomorrow, there will be 10h and 48min of daylight.