Weather forecast for tomorrowRiverside, WA

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 64°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 10mphNNW 335°
  • Humidity: 39%
  • UV index: 3
  • Sunrise: 7:23 am PDT
  • Sunset: 6:03 pm PDT
  • ▼
Tomorrow, mainly sunny conditions will dominate the day.
Temperature fluctuations between a breezy 64.4°F and a wintry 41°F are expected.
The anticipated high is warmer and better reflects September's normal temperature profile than that of October.
Sunrise will be at 7:23 am and sunset at 6:03 pm; tomorrow's daylight will last for 10h and 40min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 63°C.
Coldest hour: 6 am 37°C.

Chance of precipitation

Highest chance: 3 am - 6 am 1%.

Hourly weather forecast

  • 12 am
  • 45°F
  • Feels like:
    39°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphNNW 346°
  • Humidity: 55%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 41°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 8mphN 351°
  • Humidity: 59%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 39°F
  • Feels like:
    34°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 9mphN 351°
  • Humidity: 61%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 37°F
  • Feels like:
    32°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 9mphN 0°
  • Humidity: 63%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:23 am
  • 8 am
  • 37°F
  • Feels like:
    30°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 9mphN 357°
  • Humidity: 67%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 46°F
  • Feels like:
    43°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 10mphN 8°
  • Humidity: 47%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 55°F
  • Feels like:
    52°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphNNE 11°
  • Humidity: 36%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 2 pm
  • 61°F
  • Feels like:
    61°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphN 359°
  • Humidity: 26%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 4 pm
  • 63°F
  • Feels like:
    63°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphSW 234°
  • Humidity: 23%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 57°F
  • Feels like:
    57°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 3mphSW 233°
  • Humidity: 30%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:03 pm
  • 8 pm
  • 48°F
  • Feels like:
    46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphNW 318°
  • Humidity: 40%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 46°F
  • Feels like:
    43°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphNNW 334°
  • Humidity: 46%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, on Sunday, a combination of cloudy and bright weather is expected.
The temperature will be between the lowest temperature of 37.4°F and the highest temperature of 62.6°F. The feels-like temperature will be between a minimum of 30.2°F and a maximum of 62.6°F. The warmest part of the day will be from 3 pm to 5 pm.
Tomorrow, the expected high matches September's average of 70.9°F more than October's. Tomorrow, the temperature is expected to be a couple of degrees higher than October's normal minimum of 37.2°F.
Updated: Oct 17, 2026 @ 22:28:47 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, mainly sunny skies with just a few high clouds are anticipated.

Tomorrow, the maximum temperature will be 64.4°F, while the minimum temperature will be 41°F.
The highest temperature will be uncommonly higher than the average maximum of 54.9°F in October. Tomorrow, the lowest temperature will be a few degrees higher than the average low temperature.

On Sunday, in Riverside, sunrise will be at 7:23 am and sunset at 6:03 pm (PDT).

In Riverside, the length of the day tomorrow will be 10h and 40min.