Weather forecast for tomorrowSaint John Harbor, AK
Weather forecast for tomorrow
Sunday Oct 18, 2026
- 46°F
- 39°F
Rain
- Precip. probability: 96%
- Precipitation: 0.35"
- Wind: 4mphESE 111°
- Humidity: 91%
- UV index: 1
- Sunrise: 7:31 am AKDT
- Sunset: 5:42 pm AKDT
- details ▼
On Sunday, October 18, rain showers will persist, making for a damp and cool day.
The chance of precipitation for tomorrow is high. However, the rainfall will be light. The highest daytime temperature will reach a chilly 46.4°F, creating a slight contrast with the forecasted nighttime low of a wintry 39.2°F.
Tomorrow's peak is expected to reflect the usual October high temperature of 46°F.
Sunrise will be at 7:31 am and sunset at 5:42 pm; tomorrow's daylight will last for 10h and 11min.
The chance of precipitation for tomorrow is high. However, the rainfall will be light. The highest daytime temperature will reach a chilly 46.4°F, creating a slight contrast with the forecasted nighttime low of a wintry 39.2°F.
Tomorrow's peak is expected to reflect the usual October high temperature of 46°F.
Sunrise will be at 7:31 am and sunset at 5:42 pm; tomorrow's daylight will last for 10h and 11min.
Hourly overview
Hourly temperatures
Maximum temperature: 46°C.
Minimum temperature: 45°C.
Minimum temperature: 45°C.
Chance of precipitation
Highest chance: 6 am 86%.
Hourly weather forecast
- 12 am
- 46°F
- Feels like:45°F
Showers
- Precip. probability: 57%
- Precipitation: 0.04"
- Wind: 6mphS 175°
- Humidity: 88%
- Pressure: 29.94"Hg
- Visibility: 5mi
- UV index: 0
- details ▼
- 2 am
- 46°F
- Feels like:43°F
Light Rain
- Precip. probability: 77%
- Precipitation: 0.04"
- Wind: 6mphSSE 168°
- Humidity: 90%
- Pressure: 29.97"Hg
- Visibility: 5mi
- UV index: 0
- details ▼
- 4 am
- 46°F
- Feels like:43°F
Light Rain
- Precip. probability: 63%
- Precipitation: 0.04"
- Wind: 5mphSSE 165°
- Humidity: 89%
- Pressure: 29.97"Hg
- Visibility: 5mi
- UV index: 0
- details ▼
- 6 am
- 45°F
- Feels like:45°F
Rain
- Precip. probability: 86%
- Precipitation: 0.04"
- Wind: 4mphSSE 159°
- Humidity: 89%
- Pressure: 29.97"Hg
- Visibility: 4mi
- UV index: 0
- details ▼
Sunrise: 7:31 am
- 8 am
- 45°F
- Feels like:43°F
Rain
- Precip. probability: 88%
- Precipitation: 0.04"
- Wind: 3mphSE 142°
- Humidity: 91%
- Pressure: 29.97"Hg
- Visibility: 4mi
- UV index: 0
- details ▼
- 10 am
- 46°F
- Feels like:45°F
Rain
- Precip. probability: 79%
- Precipitation: 0.04"
- Wind: 4mphESE 110°
- Humidity: 91%
- Pressure: 29.97"Hg
- Visibility: 4mi
- UV index: 0
- details ▼
- 12 pm
- 46°F
- Feels like:45°F
Rain
- Precip. probability: 79%
- Precipitation: 0.04"
- Wind: 4mphESE 105°
- Humidity: 93%
- Pressure: 29.97"Hg
- Visibility: 4mi
- UV index: 1
- details ▼
- 2 pm
- 46°F
- Feels like:46°F
Rain
- Precip. probability: 80%
- Precipitation: 0.04"
- Wind: 3mphESE 108°
- Humidity: 90%
- Pressure: 30"Hg
- Visibility: 4mi
- UV index: 0
- details ▼
- 4 pm
- 46°F
- Feels like:46°F
Showers
- Precip. probability: 47%
- Precipitation: 0.04"
- Wind: 2mphENE 73°
- Humidity: 90%
- Pressure: 30"Hg
- Visibility: 4mi
- UV index: 0
- details ▼
Sunset: 5:42 pm
- 6 pm
- 45°F
- Feels like:45°F
Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 1mphE 97°
- Humidity: 92%
- Pressure: 30"Hg
- Visibility: 4mi
- UV index: 0
- details ▼
- 8 pm
- 45°F
- Feels like:45°F
Mostly Cloudy
- Precip. probability: 19%
- Precipitation: 0"
- Wind: 2mphNW 313°
- Humidity: 90%
- Pressure: 30.03"Hg
- Visibility: 5mi
- UV index: 0
- details ▼
- 10 pm
- 43°F
- Feels like:43°F
Mostly Cloudy
- Precip. probability: 21%
- Precipitation: 0"
- Wind: 2mphNE 50°
- Humidity: 90%
- Pressure: 30.03"Hg
- Visibility: 6mi
- UV index: 0
- details ▼
Tomorrow, on Sunday, primarily rain-filled and occasionally cloudy weather is forecasted.
Rainfall is predicted from 12 am to 4 pm. The most intense rain will be falling at 5 am and 7 am.
The temperature difference throughout the day will be unnoticeable, with a minimum of 42.8°F and a maximum of 46.4°F. The warmest part of the day will be from midnight to 5 am, and from 10 am to 5 pm.
The highest temperature will be comparable to October's average maximum of 46°F. The temperature low is forecasted to be also close to the usual October value of 39.7°F.
Rainfall is predicted from 12 am to 4 pm. The most intense rain will be falling at 5 am and 7 am.
The temperature difference throughout the day will be unnoticeable, with a minimum of 42.8°F and a maximum of 46.4°F. The warmest part of the day will be from midnight to 5 am, and from 10 am to 5 pm.
The highest temperature will be comparable to October's average maximum of 46°F. The temperature low is forecasted to be also close to the usual October value of 39.7°F.
Updated: Oct 17, 2026 @ 19:28:09 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, in Saint John Harbor, expect light to moderate rain through the day, with occasional breaks.
Light precipitation of 0.35" is anticipated in Saint John Harbor. The possibility of rainfall is high at 96%.
Tomorrow, the highest temperature will be 46.4°F, while the lowest temperature will be 39.2°F.
The highest temperature tomorrow will be in line with the average maximum temperature in October. The lowest temperature will be also in line with the average low of 39.7°F.
The highest temperature tomorrow will be in line with the average maximum temperature in October. The lowest temperature will be also in line with the average low of 39.7°F.
On Sunday, in Saint John Harbor, sunrise will be at 7:31 am and sunset at 5:42 pm (AKDT).
In Saint John Harbor, the length of the day tomorrow will be 10h and 11min.
