Weather forecast for 10 daysSumas, WA
10-day overview
Daily temperatures
Maximum temperature: 55°C.
Coldest period: Wednesday - Thursday 48°C.
Coldest period: Wednesday - Thursday 48°C.
Chance of precipitation
Highest chance: Wednesday 75%.
Long-term weather forecast
- Monday
- Oct 26, 2026
- 55°F
- 46°F
AM Showers
- Precip. probability: 37%
- Precipitation: 0.04"
- Wind: 5mphE 81°
- Humidity: 80%
- UV index: 1
- Sunrise: 7:47 am PDT
- Sunset: 5:58 pm PDT
- details ▼
- Tuesday
- Oct 27, 2026
- 50°F
- 43°F
Showers
- Precip. probability: 69%
- Precipitation: 0.63"
- Wind: 7mphSW 219°
- Humidity: 90%
- UV index: 1
- Sunrise: 7:48 am PDT
- Sunset: 5:56 pm PDT
- details ▼
- Wednesday
- Oct 28, 2026
- 48°F
- 39°F
Rain
- Precip. probability: 75%
- Precipitation: 0.39"
- Wind: 6mphSE 133°
- Humidity: 86%
- UV index: 1
- Sunrise: 7:50 am PDT
- Sunset: 5:55 pm PDT
- details ▼
- Thursday
- Oct 29, 2026
- 48°F
- 37°F
AM Showers
- Precip. probability: 47%
- Precipitation: 0.08"
- Wind: 7mphNE 48°
- Humidity: 78%
- UV index: 1
- Sunrise: 7:52 am PDT
- Sunset: 5:53 pm PDT
- details ▼
- Friday
- Oct 30, 2026
- 52°F
- 34°F
Partly Cloudy
- Precip. probability: 10%
- Precipitation: 0"
- Wind: 4mphNNE 31°
- Humidity: 69%
- UV index: 1
- Sunrise: 7:53 am PDT
- Sunset: 5:51 pm PDT
- details ▼
- Saturday
- Oct 31, 2026
- 54°F
- 36°F
Partly Cloudy
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 5mphN 8°
- Humidity: 69%
- UV index: 2
- Sunrise: 7:55 am PDT
- Sunset: 5:49 pm PDT
- details ▼
- Sunday
- Nov 1, 2026
- 54°F
- 36°F
Partly Cloudy
- Precip. probability: 14%
- Precipitation: 0"
- Wind: 4mphN 6°
- Humidity: 72%
- UV index: 2
- Sunrise: 7:56 am PDT
- Sunset: 5:48 pm PDT
- details ▼
- Monday
- Nov 2, 2026
- 54°F
- 39°F
PM Showers
- Precip. probability: 35%
- Precipitation: 0.2"
- Wind: 5mphNE 40°
- Humidity: 69%
- UV index: 1
- Sunrise: 6:58 am PST
- Sunset: 4:46 pm PST
- details ▼
- Tuesday
- Nov 3, 2026
- 55°F
- 41°F
Mostly Cloudy
- Precip. probability: 12%
- Precipitation: 0"
- Wind: 6mphNE 45°
- Humidity: 70%
- UV index: 1
- Sunrise: 7:00 am PST
- Sunset: 4:45 pm PST
- details ▼
- Wednesday
- Nov 4, 2026
- 54°F
- 43°F
PM Showers
- Precip. probability: 36%
- Precipitation: 0.16"
- Wind: 6mphENE 61°
- Humidity: 72%
- UV index: 1
- Sunrise: 7:01 am PST
- Sunset: 4:43 pm PST
- details ▼
Ten-day trends indicate that a combination of showery and cloudy weather is forecasted.
Rainfall is anticipated on Monday through Thursday, next Monday and Wednesday.
In the coming days, the maximum temperature will vary between 48.2°F and 55.4°F, while the nightly low temperatures will show a considerable swing, as the minimum temperature is expected to range between 33.8°F and 46.4°F.
With a maximum temperature of 55.4°F, Monday and next Tuesday will be the warmest days; the coldest days will be Wednesday and Thursday, with a maximum of 48.2°F.
Rainfall is anticipated on Monday through Thursday, next Monday and Wednesday.
In the coming days, the maximum temperature will vary between 48.2°F and 55.4°F, while the nightly low temperatures will show a considerable swing, as the minimum temperature is expected to range between 33.8°F and 46.4°F.
With a maximum temperature of 55.4°F, Monday and next Tuesday will be the warmest days; the coldest days will be Wednesday and Thursday, with a maximum of 48.2°F.
Updated: Oct 26, 2026 @ 12:40:40 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
In Sumas, a combination of rain-filled and cloudy weather is predicted for the next ten days.
Rainfall is anticipated on Monday through Thursday, next Monday and Wednesday in Sumas. Tuesday, with moderate precipitation of 0.63", will be the day with the most rainfall.
The maximum temperature will vary between 48.2°F and 55.4°F, as the minimum temperature will be between 33.8°F and 46.4°F.
With a maximum temperature of 55.4°F, Monday and next Tuesday will be the warmest days. The coldest days will be Wednesday and Thursday, with a maximum of 48.2°F.
On Saturday, sun and clouds will share the sky, creating a partly cloudy day.
No, it will not rain on Saturday.
On Saturday, the highest temperature will be 53.6°F, while the lowest temperature will be 35.6°F.
On Sunday, in Sumas, moderate cloud cover will mix with sunshine throughout the day.
No, it will not rain on Sunday.
On Sunday, the highest temperature will be 53.6°F, while the lowest temperature will be 35.6°F.
