Weather forecast for tomorrowSumas, WA
Weather forecast for tomorrow
Monday Oct 19, 2026
- 61°F
- 39°F
AM Clouds / PM Sun
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 5mphW 271°
- Humidity: 66%
- UV index: 2
- Sunrise: 7:36 am PDT
- Sunset: 6:11 pm PDT
- details ▼
Tomorrow, on Monday, expect clouds to linger through the morning before sunshine takes over in the afternoon.
The temperature is anticipated to vary between a maximum of a breezy 60.8°F and a minimum of a wintry 39.2°F.
Forecasts suggest the maximum temperature will be moderately higher than October's average of 56.1°F.
Sunrise will be at 7:36 am and sunset at 6:11 pm; tomorrow's daylight will last for 10h and 35min.
The temperature is anticipated to vary between a maximum of a breezy 60.8°F and a minimum of a wintry 39.2°F.
Forecasts suggest the maximum temperature will be moderately higher than October's average of 56.1°F.
Sunrise will be at 7:36 am and sunset at 6:11 pm; tomorrow's daylight will last for 10h and 35min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 59°C.
Coldest period: 3 am - 6 am 46°C.
Coldest period: 3 am - 6 am 46°C.
Chance of precipitation
Highest chance: 9 pm 7%.
Hourly weather forecast
- 12 am
- 48°F
- Feels like:48°F
Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 2mphE 81°
- Humidity: 81%
- Pressure: 29.91"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 46°F
- Feels like:46°F
Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 1mphNW 318°
- Humidity: 81%
- Pressure: 29.91"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 46°F
- Feels like:46°F
Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 2mphN 1°
- Humidity: 81%
- Pressure: 29.91"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 46°F
- Feels like:46°F
Mostly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 1mphNNE 21°
- Humidity: 82%
- Pressure: 29.91"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:36 am
- 8 am
- 46°F
- Feels like:46°F
Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 2mphNE 36°
- Humidity: 83%
- Pressure: 29.91"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 52°F
- Feels like:52°F
Mostly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 2mphNNW 334°
- Humidity: 69%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 12 pm
- 57°F
- Feels like:57°F
Mostly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 3mphW 274°
- Humidity: 63%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 2 pm
- 59°F
- Feels like:59°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphSW 231°
- Humidity: 57%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 4 pm
- 59°F
- Feels like:59°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 5mphWSW 247°
- Humidity: 56%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 55°F
- Feels like:55°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 4mphSW 231°
- Humidity: 67%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:11 pm
- 8 pm
- 50°F
- Feels like:50°F
Partly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 2mphSW 229°
- Humidity: 81%
- Pressure: 30"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 46°F
- Feels like:46°F
Partly Cloudy
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 2mphENE 63°
- Humidity: 87%
- Pressure: 30.03"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
Tomorrow, on Monday, primarily cloudy and occasionally mostly clear weather is forecasted.
The temperature will vary between a minimum of 44.6°F and a maximum of 59°F. The warmest part of the day will be from 2 pm to 5 pm.
The highest temperature will be a couple of degrees higher than October's average maximum of 56.1°F. The expected low will be also close to the average minimum in October, which is 42.3°F.
The temperature will vary between a minimum of 44.6°F and a maximum of 59°F. The warmest part of the day will be from 2 pm to 5 pm.
The highest temperature will be a couple of degrees higher than October's average maximum of 56.1°F. The expected low will be also close to the average minimum in October, which is 42.3°F.
Updated: Oct 18, 2026 @ 07:14:58 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Tomorrow, the day starts cloudy, but conditions will brighten up as the afternoon unfolds.
Tomorrow, the maximum temperature will be 60.8°F, while the minimum temperature will be 39.2°F.
The maximum temperature will be moderately higher than the average highest temperature of 56.1°F in October. The lowest temperature will be in line with the average low of 42.3°F.
The maximum temperature will be moderately higher than the average highest temperature of 56.1°F in October. The lowest temperature will be in line with the average low of 42.3°F.
On Monday, in Sumas, sunrise will be at 7:36 am and sunset at 6:11 pm (PDT).
Tomorrow, the daylight will last for 10h and 35min.
