Weather forecast for tomorrowSumas, WA

Weather forecast for tomorrow

Monday Nov 9, 2026

  • 55°F
  • 46°F
PM Showers
PM Showers
  • Precip. probability: 76%
  • Precipitation: 0.24"
  • Wind: 9mphNE 56°
  • Humidity: 72%
  • UV index: 1
  • Sunrise: 7:09 am PST
  • Sunset: 4:36 pm PST
  • ▼
Tomorrow, on Monday, prepare for occasional showers in the afternoon.
The chance of precipitation is high. However, the rainfall will be light. Temperatures will exhibit minor fluctuations, extending from a high of a mild 55.4°F to a low of a chilly 46.4°F.
A forecast high of 55.4°F brings conditions more familiar to October's average than November's.
Sunrise will be at 7:09 am and sunset at 4:36 pm; tomorrow's daylight will last for 9h and 26min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 54°C.
Coldest period: 3 am - 6 am 45°C.

Chance of precipitation

Highest chance: 6 pm 76%.

Hourly weather forecast

  • 12 am
  • 46°F
  • Feels like:
    45°F
Cloudy
Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 4mphNE 54°
  • Humidity: 87%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 45°F
  • Feels like:
    43°F
Cloudy
Cloudy
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 4mphNE 38°
  • Humidity: 90%
  • Pressure: 30.09"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 45°F
  • Feels like:
    43°F
Cloudy
Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 5mphNE 44°
  • Humidity: 87%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 45°F
  • Feels like:
    43°F
Cloudy
Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 6mphNE 51°
  • Humidity: 82%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:09 am
  • 8 am
  • 46°F
  • Feels like:
    43°F
Cloudy
Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 6mphNE 50°
  • Humidity: 80%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 48°F
  • Feels like:
    45°F
Cloudy
Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 7mphNE 55°
  • Humidity: 76%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 12 pm
  • 52°F
  • Feels like:
    50°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 7mphNE 52°
  • Humidity: 67%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 2 pm
  • 54°F
  • Feels like:
    52°F
Cloudy
Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 8mphENE 60°
  • Humidity: 65%
  • Pressure: 29.91"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 4 pm
  • 54°F
  • Feels like:
    50°F
Showers
Showers
  • Precip. probability: 46%
  • Precipitation: 0.04"
  • Wind: 9mphENE 58°
  • Humidity: 69%
  • Pressure: 29.85"Hg
  • Visibility: 7mi
  • UV index: 0
  • ▼
Sunset: 4:36 pm
  • 6 pm
  • 52°F
  • Feels like:
    48°F
Rain
Rain
  • Precip. probability: 76%
  • Precipitation: 0.04"
  • Wind: 8mphENE 65°
  • Humidity: 76%
  • Pressure: 29.85"Hg
  • Visibility: 5mi
  • UV index: 0
  • ▼
  • 8 pm
  • 50°F
  • Feels like:
    48°F
Light Rain
Light Rain
  • Precip. probability: 65%
  • Precipitation: 0.04"
  • Wind: 6mphENE 74°
  • Humidity: 85%
  • Pressure: 29.85"Hg
  • Visibility: 5mi
  • UV index: 0
  • ▼
  • 10 pm
  • 50°F
  • Feels like:
    48°F
Light Rain
Light Rain
  • Precip. probability: 63%
  • Precipitation: 0.04"
  • Wind: 6mphENE 76°
  • Humidity: 90%
  • Pressure: 29.91"Hg
  • Visibility: 5mi
  • UV index: 0
  • ▼
Tomorrow, on Monday, primarily dull and occasionally rainy weather is forecasted.
With minimal precipitation of 0.04", rainfall is anticipated from 4 pm to 11 pm.
The temperature will be between the lowest temperature of 44.6°F and the highest temperature of 53.6°F. The warmest part of the day will be from 1 pm to 4 pm.
The day’s peak temperature will reflect October's norm of 56.1°F more than November's 45.7°F. Forecasts show a temperature also more consistent with October's average minimum of 42.3°F rather than the November average of 36.5°F.
Updated: Nov 8, 2026 @ 20:17:29 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Monday, expect brief rain showers to develop during the afternoon.

With a probability of 76%, light precipitation of 0.24" is forecasted.

Tomorrow, the highest temperature will be 55.4°F, while the lowest temperature will be 46.4°F.
The highest temperature will be significantly higher than the average maximum of 45.7°F in November. The lowest temperature will be also uncommonly higher than the average low of 36.5°F.

On Monday, in Sumas, sunrise will be at 7:09 am and sunset at 4:36 pm (PST).

In Sumas, tomorrow, there will be 9h and 26min of daylight.