Weather forecast for tomorrowUmtanum, WA
Weather forecast for tomorrow
Sunday Oct 18, 2026
- 64°F
- 39°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphNE 34°
- Humidity: 40%
- UV index: 3
- Sunrise: 7:24 am PDT
- Sunset: 6:09 pm PDT
- details ▼
Tomorrow, on Sunday, October 18, sunshine will prevail for most of the day.
The maximum temperature will be an enjoyable 64.4°F, while the minimum anticipated temperature is an icy 39.2°F.
Tomorrow, expect a warmer trend, with a high of 64.4°F more common in September.
Sunrise will be at 7:24 am and sunset at 6:09 pm; tomorrow's daylight will last for 10h and 45min.
The maximum temperature will be an enjoyable 64.4°F, while the minimum anticipated temperature is an icy 39.2°F.
Tomorrow, expect a warmer trend, with a high of 64.4°F more common in September.
Sunrise will be at 7:24 am and sunset at 6:09 pm; tomorrow's daylight will last for 10h and 45min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 63°C.
Coldest hour: 6 am 36°C.
Coldest hour: 6 am 36°C.
Chance of precipitation
Highest chance: 1%.
Hourly weather forecast
- 12 am
- 48°F
- Feels like:45°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 9mphNW 306°
- Humidity: 53%
- Pressure: 30.15"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 43°F
- Feels like:37°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 6mphNW 312°
- Humidity: 66%
- Pressure: 30.15"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 39°F
- Feels like:34°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 6mphNW 314°
- Humidity: 69%
- Pressure: 30.15"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 36°F
- Feels like:32°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 5mphNW 320°
- Humidity: 73%
- Pressure: 30.15"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:24 am
- 8 am
- 36°F
- Feels like:32°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 4mphNW 311°
- Humidity: 71%
- Pressure: 30.18"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 46°F
- Feels like:46°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphNW 322°
- Humidity: 48%
- Pressure: 30.15"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 12 pm
- 55°F
- Feels like:55°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 2mphNE 47°
- Humidity: 33%
- Pressure: 30.12"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 2 pm
- 61°F
- Feels like:61°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 5mphE 88°
- Humidity: 25%
- Pressure: 30.03"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 4 pm
- 63°F
- Feels like:63°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphE 100°
- Humidity: 25%
- Pressure: 30"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 57°F
- Feels like:57°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 5mphE 94°
- Humidity: 32%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:09 pm
- 8 pm
- 46°F
- Feels like:45°F
Partly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 4mphNNE 30°
- Humidity: 54%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 43°F
- Feels like:43°F
Mostly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 3mphNW 311°
- Humidity: 58%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, a combination of sunny and dull weather is expected.
The temperature will vary between a minimum of 35.6°F and a maximum of 62.6°F. The warmest part of the day will be at 3 pm and 4 pm.
The forecasted maximum is more similar to September's typical high of 71.1°F than the average for October. The lowest temperature tomorrow will be close to October's average minimum.
The temperature will vary between a minimum of 35.6°F and a maximum of 62.6°F. The warmest part of the day will be at 3 pm and 4 pm.
The forecasted maximum is more similar to September's typical high of 71.1°F than the average for October. The lowest temperature tomorrow will be close to October's average minimum.
Updated: Oct 18, 2026 @ 04:29:12 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
On Sunday, in Umtanum, mainly sunny conditions will dominate the day.
Tomorrow, the maximum temperature will be 64.4°F, while the minimum temperature will be 39.2°F.
The maximum temperature will be a couple of degrees higher than the average highest temperature of 56.3°F in October. The lowest temperature will be in line with the average low of 39°F.
The maximum temperature will be a couple of degrees higher than the average highest temperature of 56.3°F in October. The lowest temperature will be in line with the average low of 39°F.
On Sunday, in Umtanum, sunrise will be at 7:24 am and sunset at 6:09 pm (PDT).
Tomorrow, the daylight will last for 10h and 45min.
