Weather forecast for tomorrowUmtanum, WA
Weather forecast for tomorrow
Sunday Oct 18, 2026
- 64°F
- 37°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphNE 37°
- Humidity: 41%
- UV index: 3
- Sunrise: 7:24 am PDT
- Sunset: 6:09 pm PDT
- details ▼
Tomorrow, in Umtanum, clear skies with only minor cloud interruptions are also in the outlook.
Temperature measurements will peak at a breezy 64.4°F, with a considerable drop to a low of a cold 37.4°F.
Expect a warmer feel as the forecasted high matches September's 71.1°F, rather than October's average of 56.3°F.
Sunrise will be at 7:24 am and sunset at 6:09 pm; tomorrow's daylight will last for 10h and 45min.
Temperature measurements will peak at a breezy 64.4°F, with a considerable drop to a low of a cold 37.4°F.
Expect a warmer feel as the forecasted high matches September's 71.1°F, rather than October's average of 56.3°F.
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: 3 am 2%.
Hourly weather forecast
- 12 am
- 48°F
- Feels like:43°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 9mphNW 306°
- Humidity: 60%
- Pressure: 30.15"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 43°F
- Feels like:39°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 6mphNW 306°
- Humidity: 67%
- Pressure: 30.15"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 39°F
- Feels like:36°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 6mphNW 313°
- Humidity: 71%
- 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: 4mphNW 322°
- Humidity: 75%
- Pressure: 30.18"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: 3mphNW 311°
- Humidity: 73%
- Pressure: 30.18"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 46°F
- Feels like:45°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphNW 322°
- Humidity: 49%
- 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: 3mphNE 48°
- Humidity: 34%
- 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 94°
- Humidity: 26%
- 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: 6mphESE 102°
- Humidity: 26%
- 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 91°
- Humidity: 33%
- 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: 4mphNE 36°
- Humidity: 56%
- 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 313°
- Humidity: 59%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, a combination of overcast and sun-filled weather is expected.
The temperature will be between a minimum of 33.8°F and a maximum of 62.6°F. The warmest part of the day will be at 3 pm and 4 pm.
Tomorrow, temperatures will be more comparable to the climate of September than the usual maximum in October. The lowest temperature tomorrow will be in line with October's average minimum.
The temperature will be between a minimum of 33.8°F and a maximum of 62.6°F. The warmest part of the day will be at 3 pm and 4 pm.
Tomorrow, temperatures will be more comparable to the climate of September than the usual maximum in October. The lowest temperature tomorrow will be in line with October's average minimum.
Updated: Oct 18, 2026 @ 02:50:33 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, expect plenty of sunshine and only a few scattered clouds.
Tomorrow, the maximum temperature will be 64.4°F, while the minimum temperature will be 37.4°F.
The highest temperature tomorrow will be a couple of degrees higher than the average maximum temperature in October. The lowest temperature tomorrow will be in line with the average low temperature.
The highest temperature tomorrow will be a couple of degrees higher than the average maximum temperature in October. The lowest temperature tomorrow will be in line with the average low temperature.
On Sunday, in Umtanum, sunrise will be at 7:24 am and sunset at 6:09 pm (PDT).
In Umtanum, the length of the day tomorrow will be 10h and 45min.
