Weather forecast for tomorrowSaint Helens, OR
Weather forecast for tomorrow
Monday Oct 19, 2026
- 64°F
- 45°F
Mostly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 4mphESE 110°
- Humidity: 67%
- UV index: 2
- Sunrise: 7:33 am PDT
- Sunset: 6:18 pm PDT
- details ▼
Tomorrow, a mostly gray sky is forecasted with minimal brightness.
The temperature is expected to vary between a maximum of a comfortable 64.4°F and a minimum of a chilly 44.6°F.
The day's peak of 64.4°F reflects September's seasonal pattern more than October's.
Sunrise will be at 7:33 am and sunset at 6:18 pm; tomorrow's daylight will last for 10h and 44min.
The temperature is expected to vary between a maximum of a comfortable 64.4°F and a minimum of a chilly 44.6°F.
The day's peak of 64.4°F reflects September's seasonal pattern more than October's.
Sunrise will be at 7:33 am and sunset at 6:18 pm; tomorrow's daylight will last for 10h and 44min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 61°C.
Coldest hour: 6 am 46°C.
Coldest hour: 6 am 46°C.
Chance of precipitation
Highest chance: 6 am - 9 am 5%.
Hourly weather forecast
- 12 am
- 50°F
- Feels like:50°F
Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 1mphNW 321°
- Humidity: 73%
- Pressure: 29.91"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 48°F
- Feels like:48°F
Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 1mphESE 110°
- Humidity: 79%
- Pressure: 29.91"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 46°F
- Feels like:46°F
Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 1mphSE 144°
- Humidity: 81%
- Pressure: 29.91"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 46°F
- Feels like:46°F
Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 1mphSE 125°
- Humidity: 85%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:33 am
- 8 am
- 46°F
- Feels like:46°F
Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 1mphESE 120°
- Humidity: 90%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 52°F
- Feels like:52°F
Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 3mphSE 135°
- Humidity: 79%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 12 pm
- 55°F
- Feels like:55°F
Mostly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 4mphSSE 147°
- Humidity: 68%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 2 pm
- 59°F
- Feels like:59°F
Mostly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 3mphSE 140°
- Humidity: 57%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 4 pm
- 63°F
- Feels like:63°F
Mostly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 3mphN 358°
- Humidity: 49%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 59°F
- Feels like:59°F
Partly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 4mphNNW 334°
- Humidity: 51%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:18 pm
- 8 pm
- 55°F
- Feels like:54°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 5mphNW 326°
- Humidity: 62%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 54°F
- Feels like:52°F
Mostly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 5mphNNW 327°
- Humidity: 68%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, on Monday, primarily gloomy and occasionally clear weather is forecasted.
The temperature will vary between a minimum of 46.4°F and a maximum of 62.6°F. The warmest part of the day will be at 4 pm and 5 pm.
The forecasted maximum is more similar to September's typical high of 69.3°F than the average for October. The night temperature will be consistent with the standard October low of 41.7°F.
The temperature will vary between a minimum of 46.4°F and a maximum of 62.6°F. The warmest part of the day will be at 4 pm and 5 pm.
The forecasted maximum is more similar to September's typical high of 69.3°F than the average for October. The night temperature will be consistent with the standard October low of 41.7°F.
Updated: Oct 18, 2026 @ 08:34:37 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
Tomorrow, thick clouds will linger with little clearing expected.
Tomorrow, the maximum temperature will be 64.4°F, while the minimum temperature will be 44.6°F.
The highest temperature will be slightly warmer than the average maximum of 58.1°F in October. The lowest temperature will be in line with the average low of 41.7°F.
The highest temperature will be slightly warmer than the average maximum of 58.1°F in October. The lowest temperature will be in line with the average low of 41.7°F.
On Monday, in Saint Helens, sunrise will be at 7:33 am and sunset at 6:18 pm (PDT).
In Saint Helens, the length of the day tomorrow will be 10h and 44min.
