Weather forecast for tomorrowPort Saint John, FL
Weather forecast for tomorrow
Sunday Oct 18, 2026
- 79°F
- 72°F
Mostly Cloudy
- Precip. probability: 24%
- Precipitation: 0.08"
- Wind: 18mphNE 34°
- Humidity: 65%
- UV index: 7
- Sunrise: 7:25 am EDT
- Sunset: 6:50 pm EDT
- details ▼
Tomorrow, on Sunday, October 18, a mostly gray sky is forecasted with minimal brightness.
Minimal precipitation is anticipated. A slight temperature fluctuation is predicted, ranging from a high of a moderately hot 78.8°F to a low of a pleasant 71.6°F.
The expected maximum is expected to be in line with the regular October temperature of 81.7°F.
Sunrise will be at 7:25 am and sunset at 6:50 pm; tomorrow's daylight will last for 11h and 25min.
Minimal precipitation is anticipated. A slight temperature fluctuation is predicted, ranging from a high of a moderately hot 78.8°F to a low of a pleasant 71.6°F.
The expected maximum is expected to be in line with the regular October temperature of 81.7°F.
Sunrise will be at 7:25 am and sunset at 6:50 pm; tomorrow's daylight will last for 11h and 25min.
Hourly overview
Hourly temperatures
Warmest period: 12 pm - 3 pm 81°C.
Coldest period: 12 am - 6 am 72°C.
Coldest period: 12 am - 6 am 72°C.
Chance of precipitation
Highest chance: 9 pm 33%.
Hourly weather forecast
- 12 am
- 72°F
- Feels like:72°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 16mphNNE 15°
- Humidity: 71%
- Pressure: 30.09"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 72°F
- Feels like:72°F
Mostly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 16mphNNE 22°
- Humidity: 70%
- Pressure: 30.06"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 72°F
- Feels like:72°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 15mphNNE 26°
- Humidity: 69%
- Pressure: 30.06"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 72°F
- Feels like:72°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 14mphNNE 29°
- Humidity: 71%
- Pressure: 30.09"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:25 am
- 8 am
- 72°F
- Feels like:72°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 14mphNNE 33°
- Humidity: 73%
- Pressure: 30.09"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 75°F
- Feels like:75°F
Mostly Cloudy
- Precip. probability: 19%
- Precipitation: 0"
- Wind: 16mphNE 35°
- Humidity: 66%
- Pressure: 30.12"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 12 pm
- 77°F
- Feels like:81°F
Partly Cloudy
- Precip. probability: 12%
- Precipitation: 0"
- Wind: 17mphNE 38°
- Humidity: 61%
- Pressure: 30.12"Hg
- Visibility: 10mi
- UV index: 6
- details ▼
- 2 pm
- 79°F
- Feels like:81°F
Cloudy
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 17mphNE 38°
- Humidity: 61%
- Pressure: 30.12"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 4 pm
- 79°F
- Feels like:81°F
Partly Cloudy
- Precip. probability: 20%
- Precipitation: 0"
- Wind: 15mphNE 36°
- Humidity: 63%
- Pressure: 30.09"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 6 pm
- 77°F
- Feels like:79°F
Few Showers
- Precip. probability: 30%
- Precipitation: 0.04"
- Wind: 15mphNE 35°
- Humidity: 68%
- Pressure: 30.09"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:50 pm
- 8 pm
- 73°F
- Feels like:75°F
Mostly Cloudy
- Precip. probability: 17%
- Precipitation: 0"
- Wind: 13mphNE 34°
- Humidity: 75%
- Pressure: 30.12"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 73°F
- Feels like:75°F
Showers
- Precip. probability: 38%
- Precipitation: 0.04"
- Wind: 13mphNE 36°
- Humidity: 76%
- Pressure: 30.12"Hg
- Visibility: 7mi
- UV index: 0
- details ▼
Tomorrow, on Sunday, primarily cloud-filled and occasionally damp weather is predicted.
With minimal precipitation of 0.04", rain is forecasted at 6 pm, 9 pm and 10 pm.
The temperature will vary between the lowest temperature of 71.6°F and the highest temperature of 78.8°F. The warmest part of the day will be from 1 pm to 4 pm.
The maximum temperature will be consistent with the average high of 81.7°F in October. The minimum temperature will be also comparable to October's average low of 71.8°F.
With minimal precipitation of 0.04", rain is forecasted at 6 pm, 9 pm and 10 pm.
The temperature will vary between the lowest temperature of 71.6°F and the highest temperature of 78.8°F. The warmest part of the day will be from 1 pm to 4 pm.
The maximum temperature will be consistent with the average high of 81.7°F in October. The minimum temperature will be also comparable to October's average low of 71.8°F.
Updated: Oct 17, 2026 @ 23:54:41 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 Port Saint John, a dense overcast layer will shape the day’s outlook.
Tomorrow, there is a low probability of minimal rainfall in Port Saint John.
Tomorrow, the maximum temperature will be 78.8°F, while the minimum temperature will be 71.6°F.
Tomorrow, the highest temperature will be in line with the average maximum temperature in October. Tomorrow, the lowest temperature will be also in line with the average low temperature.
Tomorrow, the highest temperature will be in line with the average maximum temperature in October. Tomorrow, the lowest temperature will be also in line with the average low temperature.
On Sunday, in Port Saint John, sunrise will be at 7:25 am and sunset at 6:50 pm (EDT).
Tomorrow in Port Saint John, the daylight will last for 11h and 25min.
