Weather forecast for tomorrow
Port Saint John, FL

Weather forecast for tomorrow

Thursday, Jun 19.

Mostly Sunny
6:24 am

8:24 pm
EDT
Mostly Sunny
91°F / 75°F
  • Wind: 11mph SSE
  • Humidity: 66%
  • Precip. probability: 18%
  • Precipitation: 0"
  • UV index: 11
On Thursday, in Port Saint John, a pleasant, mostly sunny outlook is in place.
Temperatures will oscillate between a blazing 91.4°F at their highest and a moderately hot 75.2°F at their lowest.
The maximum heat index, which measures the combined effect of heat and moisture, is computed to be a blistering 107.6°F. Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Today’s forecasted high is set to be slightly warmer than June's regular high of 87.1°F.
Sunrise will be at 6:24 am and sunset at 8:24 pm; tomorrow's daylight will last for 14h and 0min.

Frequently asked questions

What is the weather forecast for Port Saint John for tomorrow?
On Thursday, mostly sunny and dry conditions will continue.
What will be the maximum temperature tomorrow?
Tomorrow, the highest temperature will be 91.4°F, while the lowest temperature will be 75.2°F. The maximum heat index, which calculates the temperature value influenced by the moisture in the air, is computed to be 107.6°F.
The highest temperature will be a couple of degrees higher than the average maximum of 87.1°F in June. The lowest temperature will be in line with the average low of 75.7°F.
When is the sunrise / sunset tomorrow?
On Thursday, in Port Saint John, sunrise will be at 6:24 am and sunset at 8:24 pm (EDT).
How many hours of daylight will Port Saint John have tomorrow?
Tomorrow, the daylight will last for 14h and 0min.

Hourly weather forecast

12 am
  • 81°F
  • Feels like:
    86°F
Partly Cloudy
Partly Cloudy
  • Wind: 6mph SSE
  • Pressure: 30.15"Hg
  • Humidity: 81%
  • Precip. probability: 6%
  • Precipitation: 0"
  • Visibility: 10mi
2 am
  • 79°F
  • Feels like:
    84°F
Partly Cloudy
Partly Cloudy
  • Wind: 5mph S
  • Pressure: 30.12"Hg
  • Humidity: 85%
  • Precip. probability: 7%
  • Precipitation: 0"
  • Visibility: 10mi
4 am
  • 77°F
  • Feels like:
    82°F
Partly Cloudy
Partly Cloudy
  • Wind: 4mph S
  • Pressure: 30.12"Hg
  • Humidity: 89%
  • Precip. probability: 7%
  • Precipitation: 0"
  • Visibility: 10mi
6 am
  • 75°F
  • Feels like:
    81°F
Partly Cloudy
Partly Cloudy
  • Wind: 3mph S
  • Pressure: 30.12"Hg
  • Humidity: 91%
  • Precip. probability: 8%
  • Precipitation: 0"
  • Visibility: 9mi
Sunrise: 6:24 am
8 am
  • 81°F
  • Feels like:
    86°F
Mostly Sunny
Mostly Sunny
  • Wind: 4mph S
  • Pressure: 30.12"Hg
  • Humidity: 84%
  • Precip. probability: 7%
  • Precipitation: 0"
  • Visibility: 10mi
10 am
  • 86°F
  • Feels like:
    93°F
Mostly Sunny
Mostly Sunny
  • Wind: 6mph S
  • Pressure: 30.15"Hg
  • Humidity: 68%
  • Precip. probability: 6%
  • Precipitation: 0"
  • Visibility: 10mi
12 pm
  • 90°F
  • Feels like:
    97°F
Partly Cloudy
Partly Cloudy
  • Wind: 6mph SSE
  • Pressure: 30.12"Hg
  • Humidity: 58%
  • Precip. probability: 6%
  • Precipitation: 0"
  • Visibility: 10mi
2 pm
  • 90°F
  • Feels like:
    100°F
Partly Cloudy
Partly Cloudy
  • Wind: 9mph SE
  • Pressure: 30.09"Hg
  • Humidity: 57%
  • Precip. probability: 18%
  • Precipitation: 0"
  • Visibility: 10mi
4 pm
  • 90°F
  • Feels like:
    99°F
Partly Cloudy
Partly Cloudy
  • Wind: 11mph SE
  • Pressure: 30.06"Hg
  • Humidity: 56%
  • Precip. probability: 3%
  • Precipitation: 0"
  • Visibility: 10mi
6 pm
  • 86°F
  • Feels like:
    95°F
Partly Cloudy
Partly Cloudy
  • Wind: 11mph SE
  • Pressure: 30.06"Hg
  • Humidity: 63%
  • Precip. probability: 3%
  • Precipitation: 0"
  • Visibility: 10mi
8 pm
  • 82°F
  • Feels like:
    90°F
Partly Cloudy
Partly Cloudy
  • Wind: 9mph SSE
  • Pressure: 30.06"Hg
  • Humidity: 74%
  • Precip. probability: 15%
  • Precipitation: 0"
  • Visibility: 10mi
Sunset: 8:24 pm
10 pm
  • 81°F
  • Feels like:
    86°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 6mph S
  • Pressure: 30.09"Hg
  • Humidity: 79%
  • Precip. probability: 6%
  • Precipitation: 0"
  • Visibility: 10mi
Tomorrow, primarily cloud-filled and occasionally sunny weather is anticipated.
The temperature will be between a minimum of 75.2°F and a maximum of 89.6°F. The feels-like temperature will be between a minimum of 80.6°F and a maximum of 100.4°F. The hottest part of the day will be from noon to 5 pm.
The forecasted high will be a few degrees higher than the typical June maximum of 87.1°F. The minimum temperature will be also alike with June's average low of 75.7°F.
Updated: Jun 18, 2025 @ 14:15:38 UTC
Published by: Weather U.S. | About Us
Data Sources | |
Weather Forecasting & Climate
Share