Weather forecast for 10 daysTumtum, WA

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 64°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 17%
  • Precipitation: 0"
  • Wind: 4mphENE 65°
  • Humidity: 51%
  • UV index: 3
  • Sunrise: 7:14 am PDT
  • Sunset: 5:56 pm PDT
  • ▼
On Sunday, in Tumtum, clear skies with only minor cloud interruptions are in the outlook.
The temperature is expected to oscillate between a maximum of an enjoyable 64.4°F and a minimum of an icy 41°F.
This October day will feature warmer weather, consistent with September's average of 72.7°F.
Sunrise will be at 7:14 am and sunset at 5:56 pm; tomorrow's daylight will last for 10h and 42min.

10-day overview

Daily temperatures

Warmest day: Tuesday 68°C.
Coldest period: Saturday - Sunday 54°C.

Chance of precipitation

Highest chance: Sunday 25.10. 24%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • min.
  • 30°F
Mostly Clear
Mostly Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 3mphN 0°
  • Humidity: 66%
  • UV index: 0
  • Sunrise: 7:13 am PDT
  • Sunset: 5:58 pm PDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 64°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 17%
  • Precipitation: 0"
  • Wind: 4mphENE 65°
  • Humidity: 51%
  • UV index: 3
  • Sunrise: 7:14 am PDT
  • Sunset: 5:56 pm PDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 61°F
  • 41°F
Cloudy
Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 3mphNNE 25°
  • Humidity: 50%
  • UV index: 2
  • Sunrise: 7:16 am PDT
  • Sunset: 5:54 pm PDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 68°F
  • 37°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 4mphN 8°
  • Humidity: 50%
  • UV index: 2
  • Sunrise: 7:17 am PDT
  • Sunset: 5:53 pm PDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 66°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 3mphE 93°
  • Humidity: 55%
  • UV index: 2
  • Sunrise: 7:19 am PDT
  • Sunset: 5:51 pm PDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 63°F
  • 43°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 16%
  • Precipitation: 0"
  • Wind: 4mphESE 122°
  • Humidity: 63%
  • UV index: 2
  • Sunrise: 7:20 am PDT
  • Sunset: 5:49 pm PDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 59°F
  • 32°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 13%
  • Precipitation: 0"
  • Wind: 7mphWSW 256°
  • Humidity: 56%
  • UV index: 2
  • Sunrise: 7:22 am PDT
  • Sunset: 5:47 pm PDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 54°F
  • 36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 5mphE 79°
  • Humidity: 60%
  • UV index: 2
  • Sunrise: 7:23 am PDT
  • Sunset: 5:45 pm PDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 54°F
  • 34°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 6mphNE 50°
  • Humidity: 64%
  • UV index: 2
  • Sunrise: 7:25 am PDT
  • Sunset: 5:44 pm PDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 55°F
  • 36°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 22%
  • Precipitation: 0"
  • Wind: 6mphENE 64°
  • Humidity: 65%
  • UV index: 2
  • Sunrise: 7:26 am PDT
  • Sunset: 5:42 pm PDT
  • ▼
Ten-day trends indicate that a combination of cloud-filled and sunny weather is forecasted.
Rain is not anticipated in Tumtum in the upcoming period.
Expect a substantial fluctuation in daytime highs in the coming days. Maximum temperatures are forecasted between 53.6°F and 68°F, while there will be also a marked difference in overnight low temperatures, as the overnight lows will vary from 30.2°F to 42.8°F.
The warmest day will be Tuesday, with a maximum of 68°F; with a maximum temperature of 53.6°F, next Saturday and Sunday will be the coldest days in Tumtum, Washington.
Updated: Oct 18, 2026 @ 03:07:54 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, a crisp, sunny atmosphere is likely.

Tomorrow, the maximum temperature will be 64.4°F, while the minimum temperature will be 41°F.
The maximum temperature will be a few degrees higher than the average highest temperature of 55.8°F in October. Tomorrow, the lowest temperature will be also a few degrees higher than the average low temperature.

On Sunday, in Tumtum, sunrise will be at 7:14 am and sunset at 5:56 pm (PDT).

In Tumtum, tomorrow, there will be 10h and 42min of daylight.