Weather forecast for 10 daysSumas, WA

10-day overview

Daily temperatures

Warmest day: Tuesday 03.11. 57°C.
Coldest day: Wednesday 48°C.

Chance of precipitation

Highest chance: tomorrow 79%.

Long-term weather forecast

  • Monday
  • Oct 26, 2026
  • min.
  • 46°F
Cloudy
Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 2mphN 1°
  • Humidity: 94%
  • UV index: 0
  • Sunrise: 7:47 am PDT
  • Sunset: 5:58 pm PDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 50°F
  • 43°F
Rain
Rain
  • Precip. probability: 79%
  • Precipitation: 0.55"
  • Wind: 7mphSW 228°
  • Humidity: 92%
  • UV index: 1
  • Sunrise: 7:48 am PDT
  • Sunset: 5:56 pm PDT
  • ▼
  • Wednesday
  • Oct 28, 2026
  • 48°F
  • 39°F
Showers
Showers
  • Precip. probability: 63%
  • Precipitation: 0.28"
  • Wind: 6mphESE 116°
  • Humidity: 85%
  • UV index: 1
  • Sunrise: 7:50 am PDT
  • Sunset: 5:55 pm PDT
  • ▼
  • Thursday
  • Oct 29, 2026
  • 50°F
  • 39°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 8mphNE 50°
  • Humidity: 75%
  • UV index: 1
  • Sunrise: 7:52 am PDT
  • Sunset: 5:53 pm PDT
  • ▼
  • Friday
  • Oct 30, 2026
  • 52°F
  • 36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 21%
  • Precipitation: 0"
  • Wind: 5mphNE 50°
  • Humidity: 73%
  • UV index: 1
  • Sunrise: 7:53 am PDT
  • Sunset: 5:51 pm PDT
  • ▼
  • Saturday
  • Oct 31, 2026
  • 52°F
  • 36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 4mphNNE 32°
  • Humidity: 72%
  • UV index: 2
  • Sunrise: 7:55 am PDT
  • Sunset: 5:49 pm PDT
  • ▼
  • Sunday
  • Nov 1, 2026
  • 52°F
  • 37°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 16%
  • Precipitation: 0"
  • Wind: 4mphN 5°
  • Humidity: 73%
  • UV index: 2
  • Sunrise: 6:56 am PST
  • Sunset: 4:48 pm PST
  • ▼
  • Monday
  • Nov 2, 2026
  • 54°F
  • 41°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 9%
  • Precipitation: 0"
  • Wind: 5mphNNE 32°
  • Humidity: 72%
  • UV index: 1
  • Sunrise: 6:58 am PST
  • Sunset: 4:46 pm PST
  • ▼
  • Tuesday
  • Nov 3, 2026
  • 57°F
  • 41°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 13%
  • Precipitation: 0"
  • Wind: 4mphNNE 22°
  • Humidity: 70%
  • UV index: 1
  • Sunrise: 7:00 am PST
  • Sunset: 4:45 pm PST
  • ▼
  • Wednesday
  • Nov 4, 2026
  • 55°F
  • 43°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 18%
  • Precipitation: 0"
  • Wind: 5mphNE 39°
  • Humidity: 72%
  • UV index: 1
  • Sunrise: 7:01 am PST
  • Sunset: 4:43 pm PST
  • ▼
For the next ten days, primarily dull and occasionally wet weather is forecasted.
Rainfall is forecasted for Tuesday and Wednesday.
In the coming days, the maximum temperature will vary between 48.2°F and 57.2°F, while nighttime temperatures are expected to vary from 35.6°F to 46.4°F.
With the highest temperature of 57.2°F, next Tuesday will be the warmest day; expect the coldest day on Wednesday with a high of 48.2°F.
Updated: Oct 27, 2026 @ 06:08:14 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

In Sumas, predominantly cloudy and occasionally rain-soaked weather is forecasted for the next ten days.

Rainfall is predicted for Tuesday and Wednesday in Sumas. Tuesday, with moderate precipitation of 0.55", will be the day with the most rainfall.

The maximum temperature will vary between 48.2°F and 57.2°F, while the minimum temperature will range between 35.6°F and 46.4°F.

With the maximum temperature of 57.2°F, next Tuesday will be the warmest day. Wednesday will be the coldest day, with a maximum temperature of 48.2°F.

On Saturday, in Sumas, expect a mix of sun and clouds throughout the day.

No, it will not rain on Saturday.

On Saturday, the maximum temperature will be 51.8°F, while the minimum temperature will be 35.6°F.

On Sunday, in Sumas, a pleasant mix of sun and clouds will define the day.

No, it will not rain on Sunday in Sumas.

On Sunday, the highest temperature will be 51.8°F, while the lowest temperature will be 37.4°F.