Weather forecast for tomorrowUnion, WA
Weather forecast for tomorrow
Sunday Oct 18, 2026
- 63°F
- 43°F
Partly Cloudy
- Precip. probability: 21%
- Precipitation: 0"
- Wind: 9mphNE 39°
- Humidity: 69%
- UV index: 3
- Sunrise: 7:35 am PDT
- Sunset: 6:19 pm PDT
- details ▼
Tomorrow, clouds and sunshine will alternate throughout the day.
Temperature fluctuations between a breezy 62.6°F and a frosty 42.8°F are forecasted.
Tomorrow, the predicted high temperature will be moderately higher than the average October peak of 57.6°F.
Sunrise will be at 7:35 am and sunset at 6:19 pm; tomorrow's daylight will last for 10h and 43min.
Temperature fluctuations between a breezy 62.6°F and a frosty 42.8°F are forecasted.
Tomorrow, the predicted high temperature will be moderately higher than the average October peak of 57.6°F.
Sunrise will be at 7:35 am and sunset at 6:19 pm; tomorrow's daylight will last for 10h and 43min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 61°C.
Coldest hour: 6 am 39°C.
Coldest hour: 6 am 39°C.
Chance of precipitation
Highest chance: 9 am 21%.
Hourly weather forecast
- 12 am
- 46°F
- Feels like:46°F
Mostly Clear
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 1mphNNE 23°
- Humidity: 95%
- Pressure: 30.24"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 45°F
- Feels like:45°F
Clear
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 1mphNNW 329°
- Humidity: 98%
- Pressure: 30.24"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 43°F
- Feels like:43°F
Clear
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 1mphNNW 329°
- Humidity: 99%
- Pressure: 30.21"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 39°F
- Feels like:39°F
Mostly Clear
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 2mphN 355°
- Humidity: 100%
- Pressure: 30.21"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
Sunrise: 7:35 am
- 8 am
- 39°F
- Feels like:39°F
Partly Cloudy
- Precip. probability: 20%
- Precipitation: 0"
- Wind: 1mphN 351°
- Humidity: 100%
- Pressure: 30.18"Hg
- Visibility: 3mi
- UV index: 0
- details ▼
- 10 am
- 50°F
- Feels like:50°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 2mphNE 45°
- Humidity: 85%
- Pressure: 30.18"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 12 pm
- 57°F
- Feels like:57°F
Mostly Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 5mphENE 72°
- Humidity: 63%
- Pressure: 30.12"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 2 pm
- 61°F
- Feels like:61°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 7mphENE 57°
- Humidity: 50%
- Pressure: 30.06"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 4 pm
- 61°F
- Feels like:61°F
Mostly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 8mphNE 54°
- Humidity: 49%
- Pressure: 30.03"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 57°F
- Feels like:57°F
Mostly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 5mphNE 49°
- Humidity: 57%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:19 pm
- 8 pm
- 50°F
- Feels like:50°F
Mostly Cloudy
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 2mphNE 44°
- Humidity: 78%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 46°F
- Feels like:46°F
Mostly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 1mphN 354°
- Humidity: 86%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, primarily dull and occasionally mostly clear weather is predicted.
The temperature will be between the lowest temperature of 39.2°F and the highest temperature of 60.8°F. The warmest part of the day will be from 2 pm to 5 pm.
The maximum temperature will be a couple of degrees higher than October's average high of 57.6°F. The night temperature will be also similar to the standard October low of 41.9°F.
The temperature will be between the lowest temperature of 39.2°F and the highest temperature of 60.8°F. The warmest part of the day will be from 2 pm to 5 pm.
The maximum temperature will be a couple of degrees higher than October's average high of 57.6°F. The night temperature will be also similar to the standard October low of 41.9°F.
Updated: Oct 17, 2026 @ 17:08:46 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 Union, a partly cloudy outlook will keep the sky interesting throughout the day.
Tomorrow, the highest temperature will be 62.6°F, while the lowest temperature will be 42.8°F.
Tomorrow, the maximum temperature will be a few degrees higher than the average highest temperature in October. The lowest temperature will be in line with the average low of 41.9°F.
Tomorrow, the maximum temperature will be a few degrees higher than the average highest temperature in October. The lowest temperature will be in line with the average low of 41.9°F.
On Sunday, in Union, sunrise will be at 7:35 am and sunset at 6:19 pm (PDT).
Tomorrow, the daylight will last for 10h and 43min.
